Valve banks type BWN and BWH with directional valves acc. to D 7470 A/1
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- Alyson Simon
- 5 years ago
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1 Valve banks type BWN and BWH with directinal valves acc. t D 7470 A/1 Pressure p max = bar Flw Q max = lpm 1. General infrmatin The directinal valves WN 1 r WH 1(2 and 3) type (acc. t D 7470 A/1) are munted n sub-plates. These valve banks are laterally arranged between a cnnectin blck and an end plate, all held tgether and hydraulically cnnected via a tie rd. The cnnectin blck, with inlet fr pressurised il and utlet fr the return, is available in differing versins: With/withut pressure limiting valve r as an adapter t munt the valve bank n hydraulic pwer units. The galleries fr pressurised il and return run thrugh all sub-plates and cnnect the munted valves in parallel. The valves are cunted starting frm the cnnectin blck. Fr mre detailed data and ntes cncerning the individual valves refer t D 7470 A/1. Directinal valve bank int basic versin Order example and flw pattern symbl crrespnding t the pht BWN 1 A - 2/120 - FNGS G 24 Cnnectin blck Directinal valve End plate Directinal valve bank fr direct munting at a cmpact hydraulic pwer pack Here e.g. HK 44/1 M - H 6,0 - A1/200 (acc. t D ) Order example and flw pattern symbl crrespnding t the pht HK 44/1 M - H 6,0 - A1/200 - BWN 2 F - FHH G Order cding f the pump Directinal valve bank Cmpact hydraulic pwer pack Directinal valve bank HAWE Hydraulik SE STREITFELDSTR MÜNCHEN D 7470 B/ by HAWE Hydraulik May
2 D 7470 B/1 page 2 2. Available versins Fr cmplete type verview ref. t sectin 7, page Type cding and general parameter Order examples: BWN 1 A - 2/120 - FNGS G 24 BWH 2 F - FHH G 24 Cnnectin blck r adapter plate (sectin 2.2) Desired pressure setting (bar) End plate (sect. 2.3) Directinal valves (sectin ) Table 1: Basic type Table 2: Prt size Table 3: Actuatin slenid BWN 1 9 ) BWH 1 9 ) BWH 2 BWH 3 Valves acc. t D 7470 A/1 WN 1.. WH 1.. WH 2.. WH 3.. Pressure p max (bar) 350 (300) 8 ) Flw Q max (lpm) 5 (6) 8 ) Prts ISO G 1/4 G 3/8 228/1 (BSPP) Directinal BWN 1 BWH 3 valve bank BWH 1 BWH 2 G 12 G 24 WG 110 WG V DC 24 V DC 110 V AC 230 V AC 50 and 60 Hz Fr further vltage and ntes ref. t see D 7470 A/1 sect Cnnectin blcks and adapter plates Type f installatin Suited fr BWN 1 BWH 1 BWH 2 BWH 3 Design Pressure limiting valve Adjust- Spring ability husing Symbls A - 1/.. A - 3/.. A - 2/.. A - 4/.. Fr installatin int the piping system. Use prt R always as reflw (p R < 20 bar) A - 1/... A - 2/... A - 3/... A - 4/... A - 5 Adjustable with tls Manually Adjustable with tls Manually Withut Zinc die-cast (standard) Steel 6 ) AP-14-../.. AP-34-../.. Withut check valve With check valve AP-14-../.. A - 5 AP-34-../.. Pressure range frm...t (bar) (see als sectin 5.1!) Direct munting at cmpact hydraulic pwer packs 1 ) Munting n hydr. pwer packs 1 ) HK (D ) MP (D 7200 H) HC (D 7900) HCG (D 7900 G) FP (D 7310) LP (D 7280 H) R (D 6010 H D 6010 DB 7 ) D 6010 S) 7) Z (D 6820) F F F1 5 ) S L 2 ) C 2 ) 3 ) D 4 ) 2 ) A 1/.. t A 4/.. A 13/.. t A 43/.. A 1/.. t A 4/.. A 1/.. t A 4/.. Withut DBV A.. t E.. A.. and B.. Cnnectin blck incl. pressure limiting valve at the hydraulic pwer pack F, S and L F1 C and D K Cnnectin nt valve banks SWR 1 (D 7450) K Withut pressure limiting valve 1) Nte: Pump delivery flws (dep. n mtr speed) must nt exceed the max. permissible flw rate f the utilized valve, see D 7470 A/1 sect Nte max. pressure p max! 2) Nt with additinal pressure switches acc. t sect , alternative see sectin ) Only fr tank size B6... B40 4) Only fr tank size B50 and B75 5) Fr accumulatr and pressure gauge cnnectins: see als Sk 6900 H(M) as well as Sk 7200 M(N) 6) Only in case f pressure surges (> 20 bar) in the return line e.g. as a result f decmpressin surges frm accumulating cnsumers etc. A return pressure stp (acc. t D 7470 A/1, sect 2.1) might be necessary, (nly with BWN(H) 1 r with BWH 2) 7) Only type BWH 2(3): Restricted N. f valves at prts P1 and P2 (ver size). A separate rientatin is t be preferred utilizing BWH 2(3) A-.., when mre valves are required in a valve bank 8) Figures in brackets apply t directinal spl valves, flw pattern symbl W, WX 9) Fr cmbinatins f directinal spl valves type BWN 1 with BWH 1, see sect. 5.6
3 D 7470 B/1 page End plate On DG.. 1 Tw DG.. Ntes (DG stands fr pressure switch) Standard Symbls With drain valve, e.g. t discharge a cnnected accumulatr (see sect. 5.5) DG 3./.. 1.DG 2.DG 1) Example: 33/65 Fr type BWN(H) 1 and BWH 2: With pressure switch acc. t D 5440 fr mnitring the P duct 1.DG 2.DG.2 /2 = Withut pressure switch, but retrfitting is pssible (nly with cding 4. and 5.).3 /33 = DG 33 Adjustm. range: (700) bar.4 /34 = DG bar.5 /35 = DG bar.6 / = DG bar.65 /65 = DG bar 33 t 5 42 t DG 4./.. 1.DG 2.DG 1) Example: 42/35 Fr type BWN(H) 1: With additinal drain valve ( ref. t cding 2 ) and prt fr pressure gauge cnnectin G 1/4 (see als sect. 5.5) Fr DG specificatin, see cding 3 abve. 3./.. DG.. Nr. 1 4./.. DG.. Nr DG MVP 4.. r MVPX 4.. Fr type BWN(H) 1: With additinal drain valve (ref. t cding 2.), prt fr pressure gauge G 3/8 and munted pressure limiting valve type MVP 4 r MVPX 4 acc. t D 7000/1 r D 7000 TÜV (see als sect. 5.5) Example: 54 - MVPX 4E/150 Fr DG specificatin, see cding 3 abve (1.DG). DG.. Nr t 565 DG.. Nr / / / / Spacers: These spacers enable retrfitting f ne (..1) r tw (..2) valves including their sub-plate (see sect. 3.2 and 4.2). The crrespnding cding shuld be added after the cding f the end plate. Examples: / / MVPX4E/150 etc...1 and..2 (spacers) 1) Versin with tw pressure switches nt with type BWN(H) 1 C, D, S and L r BWH 2(3) C, D. An additinal sectin is available with pressure switch (sect ) as alternative
4 D 7470 B/1 page Directinal valves Diretinal valves type BWN 1 (basic functin) f the available flw pattern symbls (individual directinal valve with crrespnding sub-plate = valve sectin) 1 ) Maximum 10 valves can be cmbined; Flw pattern symbls J, U, V, L, K, G, and GX are t be cunted as 2 valves. Idle circulatin valves D, F r A shuld be placed as first valve within the valve bank (first valve cding) t minimize the back pressure. Directinal valve banks slightly reduce the heat dissipatin t the surrunding because f the small distance between neighbring valve slenids. It is therefre advisable t lcate at least ne unactuated valve between valves actuated simultaneusly r fr lnger perids. Otherwise neighbring valves wuld hinder heat dissipatin and heat each ther up. This rule shuld be beyed, when the duty cycle f the valves is abve 60% ED. It is recmmended t emply ecnmy circuits acc. t D 7813, D 7832, D 7833, if this is nt pssible. Directinal seated valves Directinal spl alves D F B Q A C E P W WX O I Y H N M R S T J U V K 2 ) Enclsed il vlume Special characteristic f symbl Q, N, J, U and L: If these valves are nly seldm activated and their temperature rises frm cld t perating temperature due t neighburing valves and/r due t il flw thrugh P and R galleries, since thermal expansin f enclsed il is hindered, the pressure in the enclsed space may rise s high that the perating frce f the slenid is exceeded and the valve des nt respnd when energised. In such cases, use pressure cmpensated valves type WH 1. Pressure increase due t pump after-running (when the mtr has been switched ff) can cause similar effects if the BWN valve bank is directly munted and an simultaneusly energised idle circulatin valve is missing. In this case WH 1.. shuld be used als. Accumulatrs (e.g. sect. 5.5) als prevent pressure increases. Directinal valves with additinal return pressure stp: When several valves are perating in parallel, an return pressure stp is D1; F1 H1 A1; P1 M1 O1; I1 N1 Y1; J1 R1 U1; L1 S1 V1 T1 required smetimes. It prevents pressure surges ut f the cmmn return pipe frm entering unperated, unladed r easily mving cnsumers, whenever there is a cnnectin AdR, thus preventing uncntrlled mvements. These check valves are unsuitable t blck pressurized fluid, which might be apparent at R, depending n the peratin sequence with ther valves. A circuit with an external check valve wuld have t be emplyed instead. 1) Fr additinal functins, e.g. pressure switches at the cnsumer prt and pressure limiting valves, see sectin and ) Fr release ratis and further ntes see sect. 5.3
5 D 7470 B/1 page Directinal valves type BWH 1, BWH 2 and BWH 3 f the available flw pattern symbls (individual directinal valve with crrespnding sub-plate = valve sectin) 1 ) Maximum 10 valves can be cmbined; Flw pattern symbls J, U, V, L, and K are t be cunted as 2 valves. Idle circulatin valves D, F r A shuld be placed as first valve within the valve bank (first valve cding) t minimize the back pressure. Directinal valve banks slightly reduce the heat dissipatin t the surrunding because f the small distance between neighbring valve slenids. It is therefre advisable t lcate at least ne unactuated valve between valves actuated simultaneusly r fr lnger perids. Otherwise neighbring valves wuld hinder heat dissipatin and heat each ther up. This rule shuld be beyed, when the duty cycle f the valves is abve 60% ED. It is recmmended t emply ecnmy circuits acc. t D 7813, D 7832, D 7833, if this is nt pssible. D F B Q A 3 ) C E P O I 3 ) Y 3 ) H N M R S 3 ) 1) Fr additinal functins, e.g. pressure switches at the cnsumer prt and pressure limiting valves see sectin and ) Fr release ratis and further ntes, see sectin 5.3 3) nly type BWH 1 T 3 ) J U 3 ) V 3 ) K 2 ) Directinal valves with additinal return pressure stp (nt available with type BWH 3!): 1 = BWN 1 / BWH 1 2 = BWH 2 D1 (1) H1 (1, 2) F1 (1) M1 (1, 2) A1 (1) N1 (1, 2) P1 (1) R1 (1, 2) O1 (1) S1 (1, 2) I1 (1) T1 (1, 2) Y1 (1) J1 (1) U1 (1) V1 (1) L1 (1) When several valves are perating in parallel, an return pressure stp is required smetimes. It prevents pressure surges ut f the cmmn return pipe frm entering unperated, unladed r easily mving cnsumers, whenever there is a cnnectin AdR, thus preventing uncntrlled mvements. These check valves are unsuitable t blck pressurized fluid, which might be apparent at R, depending n the peratin sequence with ther valves. A circuit with an external check valve wuld have t be emplyed instead. Simplified flw pattern symbls I Y S T J U V L K
6 D 7470 B/1 page Directinal valves with integrated additinal elements Pressure switches (DG 33, DG 34, DG 35, DG der DG 5 nach D 5440) at prts A, B, and P Nt available fr directinal spl valves cding W(WX) and G(GX) acc. t sect ! Munted pressure switch Psitin Suited fr At prt A r B BWN 1 BWH 1 BWH 2 DG Adjustment range Prepared fr retrfitting (700) bar 1 ) bar bar bar bar Nte Can t be cmbined with directinal seated valves, cding D, A, F, P, O, I, Y, S, T r valve banks BWN(H)..C (D, S, L) as well as 1. valve within valve bank BWN(H) 1(2) P! Order examples: 3/2-way directinal valve with ne DG at prt A: BWN1A-H4-1-1-G 24 3/2-way directinal valve with return pressure stp and ne DG in the pump gallery: BWH1F-H18 R G 24 4/3-way directinal valve with tw DG at prts A and B BWH2A-K G 24 At prt P 2) bar Prepared fr retrfitting (700) bar 1 ) bar bar bar bar bar Available versin: directinal seated valves, cding H, M, N and R. Makes end plates cding superfluus. Can t be cmbined within valve bank BWN(H)..C (D, S, L) r as 1. valve within valve bank BWN(H) 1(2) P! DG at prt A DG at prt B 1) Makes nly sense in cmbinatin with BWH 1 Attentin: D nt exceed p max! Observe perm. pressure fr BWN 1 (acc. t D 7470 A/1 sect ). Valve type, available versins (cdings) and symbls (examples) 2/2-way 3/2-way 4/2-way 3/3-way 4/3-way B.. C.. E.. Q H.. M.. N.. R S..T J U L K A-prt A-prt B-prt DG at prt A DG at prt P With DG and return pressure stp Example: J Example: K 4 3 3/2-way directinal valve with a DG at prt A (nly type BWN 1 and BWH 1) Fr technical data f the pressure limiting valve, see D 7000 E/1, type MVF 4.. Order example: BWH1A-1/200- M/150 J/ G 24 Flw pattern symbl acc. t the rder example Basic type cding acc. t sectin /2-way directinal seated valve (acc. t sect and 2.4.2) with integrated pressure limiting valve 2 ): Pressure specificatin (bar) fr the pressure limiting valve H(1)/...; M(1)/...; N(1)/...; J(1)/...; U(1)/...; V(1)/... R(1)/...; 2) When used as secnd pressure stage, available with tapped plug at prt A. When rdering, indicate in uncded text: e.g. BWN1A-1/200-M/150 RH/ G 24 with tapped plug N at the third valve sectin (cding H/100). With cding H(1), M(1), N(1), R(1) a cmbinatin with pressu switches is nt available. Nt available in cmbinatin with valve bank BWN(H) 1C (S, L)!
7 D 7470 B/1 page 7 Versin with pressure limiting valve and pressure switch at prt A (nly fr type BWN 1 and BWH 1) Fr technical data f the pressure limiting valve type MVF 4.., see D 7000 E/1 r fr the pressure switch type DG.., see D 5440 Order example: BWH1A5 - H J4/ G 24 Symbls (examples) J4/250 U15/180 Basic type cding acc. t sectin /3-way directinal seated valve (acc. t sect and 2.4.2) with directly munted pressure limiting valve and pressure switch: J2 (3, 4, 5,, 65) /... U2 (3, 4, 5,, 65) /... V2 (3, 4, 5,, 65) /... Pressure specificatin (bar) fr the pressure limiting valve Attentin: Nt available in cmbinatin with valve bank BWN(H) 1 C(S, L)! Only available as 1. valve within a valve bank BWN(H) 1P -.. with cding J2/.. r U2/..! 2/2-way directinal seated valve with miniature pressure limiting valve (nly fr type BWN 1 and BWH 1) Intended use: Fr arbitrary activatin f varius pressure stages in pre-cntrl circuits r ther hydraulic circuits with lw pump delivery flw. Order example: BWN 1A5 - F/80 F/180 F/ G 24 Flw pattern symbl crrespnding t the rder example Basic type cding acc. t sectin /2-way directinal seated valve (acc. t sect and 2.4.2) with integrate pressure limiting valve F/... D/... Operatin pressure p max = 320 bar Flw = apprx. 2 lpm Pressure specificatin (bar) fr the pressure limiting valves 2.5 Additinal sectins Pressure reducing valves as additinal sectin (nly type BWN 1, BWH 1 and BWH 2) Max. permissible inlet pressure 400 bar They can be placed arbitrarily within the valve bank. The pressure reducing valve determines the pressure fr all directinal valves munted dwnstream (secndary side) and the cnsumers cnnected t them, independent frm simultaneus withdrawal f pressurized il with a higher pressure level via directinal valves lcated upstream (primary side). Example: Clamping cylinders with lw pressure setting r pilting valves fr electr-hydraulic lw-pressure remte cntrl purpses. The pressure reducing valves type CDK 3 acc. t D 7745 (cding CZ ) and type CLK acc. t D 7745 L (cding LZ ) are used here. These valves d nt shw any leakage in blcked state (pressure upstream is higher than the set secndary pressure) as they are designed as 2/2-way valves, acting like a seated valve. A check valve prevents any reflw frm the secndary side t the primary side (pump side) r any pressure drp. CZ: It is necessary t install a pressure limiting valve in the cnsumer pipe if externally induced lads culd cause unpermissible peak pressure. Fr ld versin with 3-way pressure reducing valve, see sect Order examples: BWN 1 A-1/120 - CZ2/180/5R/4 -HH-1-G 24 Symbl BWH 2 A-2/280 - LZ1/250/5R/2 -NN-1-X 24 Fr individual rder BWN 1- CZ5/130 /5R /7 (example) e.g. as spare part, retrfitting, wn strage etc. - CZ X 2-way pressure reducing valve 1 ) Utilized pressure Pressure range X 08/... - CZ 1/... - LZ 2/... 5/... 25/... 55/... reducing valve Withut 4 ) CDK 3-08 CDK 3-1 CDK 3-2 CDK 3-5 CDK ) CDK ) (bar) 2) Pressure switch DG 3.. acc. t D 5440 (n cding) /2 /3 /4 /5 /6 /7 Withut pressure switch 6 ) DG may be retrfitted DG (700) bar 3 ) DG bar DG bar DG bar DG bar 5R Check valve in gallery P - CZ 08 t 55/.. Versin withut DG.. Versin with DG.. see rder example abve 1) Only tl adjustable available. Adjustment can be altered (mnitred by a pressure gauge) after slackening the lck nut with a spanner a/f 17 2) Set value fr secndary pressure (pressure gauge reading) at flw Q = 0 lpm (cnsumer in end psitin). The pressure drps a little, if pressurized il flws t the cnsumer. 3) Use f this versin desn t make much sense due t the high primary side pressure. 4) With tapped plug, prepared fr retrfitting f a CDK 3(32, 35)-.. 5) Fr details, see D ) Nt with type BWH 2 and cding LZ
8 D 7470 B/1 page Individual sub-plate with pressure switch (fr type BWN 1 and BWH 1) When it isn t pssible t install a pressure switch at the end plate e.g. when there is nt enugh space, it can be munted n an individual sub-plate at any psitin within the valve bank. Order example: BWN1A-1/200-HM-33-H-42-1-G 24 Basic type cding acc. t sect Pressure switch DG 3. acc. t D 5440 fr sub-plate with DG 3. Adjustment range (bar) Symbl acc. t rder example DG 5 E-250 DG 5 E-400 DG 5 E ) E2 5 E4 5 E6 prepared ) Prepared fr retrfitting f a pressure switch, nly avail. fr type BWN 1 and BWH Directinal valve cding H with return pressure stp and pressure switch (nly type BWN 1 and BWH 1!) The directinal seated valve represented in the symbl allws arbitrary blcking f the pump gallery. A return pressure stp is additinally integrated in the pump gallery. Order example: BWN1A-1/150 - H8XX NN-1-1-G 24 Basic type cding Available cding H fr sub-plate with check valve acc. t sectin 2 ++ fr pressure switch DG Adjustment range (bar) Prepared fr retrfitting Only with BWH With BWN 1.. and BWH Separatin plate fr P duct (fr type BWN 1 and BWH 1!) When due t functinal reasns tw separate cntrl circuits are intended (e.g. independent flw r pressure figures), a space saving layut can be achieved with this separatin plate, still using ne jint return duct. The use f an end plate featuring a pressure gauge prt M4 (e.g. cding -42) is recmmended, as this may be utilized as secndary pressure inlet. Order example: BWN1A-5-HH-X-H-42-1-G 24 Symbl acc. t rder example Basic type cding acc. t sect fr the separatin plate fr the end plate with pressure cnnectin M4
9 D 7470 B/1 page 9 3. Unit dimensins All dimensins are in mm, are subject t change withut ntice! 3.1 Cnnectin blcks and adapter plates acc. t sectin Cnnectin blcks Type BWN 1 A- 1(2, 3, 4)/... BWH 1 A- 1(2, 3, 4)/... Type BWH 2 A- 1(2, 3, 4)/... Type BWH 3 A- 1(2, 3, 4)/... A-2(4)/... A-1(3)/... Fr missing specificatins see belw! Prvisin fr a lead seal M 6, 6 deep M 6, 6 deep M 8, 8 deep Type BWN(H) 1 A- 5 Type BWH 2 A- 5 Type BWH 3 A- 5 M 6, 6 deep M 6, 6 deep M 8, 8 deep Prts ISO 228/1 (BSPP): A, B, P, R = G 1/4 (BWN(H) 1 and BWH 2) G 3/8 (BWH 3)
10 D 7470 B/1 page 10 Type BWN(H) 1 AP 1 and BWN(H) 1 AP 3 apprx. 103 max. apprx. 72 M6, 8 deep Prts ISO 228/1 (BSPP): M, P and R = G 1/ Adapter plates The illustratin belw shws lateral installatin e.g. with hydraulic pwer packs type MP (acc. t D 7200 H) r hydraulic pwer packs (acc. t D 6010 H). The pht n the cver page illustrates erect installatin with cmpact hydraulic pwer packs type HK (acc. t D ), HC (acc. t D 7900) r HCG (D 7900 G). Type BWN 1 F BWH 1 F Cnnectin blck A1/..t A4/.. (hydraulic pwer pack) Versin F and S Type BWN 1 F1 BWH 1 F1 Versin F1 Nte: Prt R (G 1/4 BSPP) may be used as additinal reflw prt. Pressure prt M, M1 and M2 (G 1/4 BSPP) e.g. fr cnnecting a pressure gauge r a pressure switch
11 D 7470 B/1 page 11 Type BWN(H) 1 S Adapter plate fr direct munting nt hydraulic pwer packs type LP, acc. t D 7280 H Type BWN(H) 1 L Adapter plate fr direct munting nt hydraulic pwer packs type LP, acc. t D 7280 H Cnnectin blck A1/.. t A4/.. (hydraulic pwer pack) Versin S a = 77.5 with tank B4 105 with tank B10 Nte: Prt R (G 1/4, BSPP) may be used as additinal reflw prt. Pressure prts M (G 1/4, BSPP) e.g. fr cnnecting a pressure gauge r a pressure switch Type BWH 2 C BWH 2 D Cnnectin blck A.. t E.. (hydraulic pwer pack) Type BWH 2 F BWH 3 F Cnnectin blck A1/.. t A4/.. (hydraulic pwer pack) Versin F Versin C and D Figures in brackets fr BWH 3 F Type a 2 b 3 c e Prts ISO 228/1 (BSPP) Type a a 1 b b 1 b 2 h h 1 M1, M2 and R BWH 2 C BWH 2 F G 1/4 BWH 3 D BWH 3 F G 3/8 Nte: Prt R (G 1/4, BSPP) may be used as additinal reflw prt. Pressure prts M 1(2) e.g. fr cnnecting a pressure gauge r a pressure switch
12 D 7470 B/1 page 12 K Directinal spl valve bank SWR 1 acc. t D 7450 Directinal valves acc. t sect Nte: Pressure cnnectin M1 and M2 (G 1/4, BSPP) e.g. pressure gauge r pressure switch P (Illustratin with type BWHN(H) 1) Directinal seated valve bank BVZP 1 acc. t D 7785 B Max. trque 7.5 Nm Directinal valves acc. t sect a = 29 (BWN(H) 1) 25 (BWH 2)
13 D 7470 B/1 page End plates acc. t sectin 2.3 (Illustratin with type BWN(H) 1 but applies t all sizes) 1, 11 and 12 2, 21 and MVP... (nly with type BWN(H) 1!) Spacer fr 1 (cding...1) r 2 (cding...2) valve (Dimensins are valid fr all end plates) apprx. 71 Versin withut DG.. Drain valve a/f 5 apprx. 71 Versin withut DG.. 1) max. apprx. 120 a/f 14 (..1) L (..1) L1 Drain valve a/f 5 Secnd DG.. with End plate 3../.. r 4../.. Drain valve a/f 5 Prts M4, ISO 228/1 (BSPP): G 1/4 ( ) G 3/8 ( ) M 6, 6 deep Remve tubular spacer and end plate add the valve(s) incl. sub-plate, reinstall the end plate! Fr missing dimensins, see end plate cding 3.. 1) with MVPX 4... (lead sealed) Suited fr BWN(H) 1 BWH 2 BWH 3 L L a a a b b b b c c 1 25 c e e e e f i g M 6, 6 deep M 6, 6 deep M 8, 8 deep
14 D 7470 B/1 page Directinal valves Basic functins acc. t sectin 2.4 Directinal seated valves and directinal spl valves fr type BWN(H) 1 (Versin with return pressure stp is identical) B, C, D, E, F, H, M, N, O, P, Q, R J, U, V Y, S, T, I W and WX Missing with cding D and F Missing with cding Y and I Manual emergency actuatin M 6, 6 deep Valve sectins K a D, F, H, M, N, R 23.5 B, C, Q, E 15 P and O 21.5 Prts ISO 228/1 (BSPP): A, B, P and R = G 1/4 1) This dimensin depends n the manufacturer and can be max. 40 mm acc. t DIN EN
15 D 7470 B/1 page 15 Directinal seated valves fr type BWH 2 (Versin with return pressure stp is identical) B, C, D, E, F, O, P, Q H, N, M, R J, U Prt A missing with cding D and F Prts ISO 228/1 (BSPP): A, B, P and R = G 1/4 Manual emergency actuatin Directinal seated valves fr type BWH 3 B, C, D, H, N, E, F, O, M, R P, Q J Prt A missing with cding D and F Prts ISO 228/1 (BSPP): A, B, P and R = G 3/8 Manual emergency actuatin 1) This dimensin depends n the manufacturer and can be max. 40 mm acc. t DIN EN
16 D 7470 B/1 page Additinal functins Directinal seated valves with additinal pressure switches fr type BWN 1 and BWH 1 and 2 acc. t sectin (Versin with return pressure stp is identical) H ; Q N ; B M ; E R ; C J U K apprx. c 1 apprx. c... 2 (nly BWN 1 and BWH 1) BWN(H) 1 a 19 a 1 57 b 27 c 77 c 1 62 Fr missing dimensins, see sectin 3.3.1! BWH BWH Directinal seated valves with pressure limiting valve fr type BWN 1 and BWH 1 acc. t sectin H(1)/... t R(1)/... J(1)/..., U(1)/..., V(1)/... F/... and D/... Pressure limiting valve Tapped plug ptinal Pressure switch ptinal (als see sectin 3.3.2) Pressure limiting valve Fr missing specificatins, see sectin 3.3.1! Pressure limiting valve
17 D 7470 B/1 page Additinal sectins acc. t sectin way pressure reducing valve type -CZ..., fr installatin in valve banks type BWN 1, BWH 1, and BWH 2 (acc. t sectin 2.5.1) Type -CZ 0,8/.. 1/.. 2/.. 5/.. 25/.. 55/.. Prvisin fr a lead seal a/f 24 Max. trque 70 Nm Type -CZ X a/f 30 Max. trque 60 Nm Withut DG.. With DG.. apprx. 81 apprx. 62 Prts M = G 1/4 ISO 228/1 (BSPP) Indiv. sub-plate with pressure switch (acc. t sect ) Directinal seated valve cding H.XX with return pressure stp and pressure switch (acc. t sect ) Separating plate fr gallery P (acc. t sectin 2.5.4) apprx. 71 withut DG..
18 D 7470 B/1 page Additinal elements 4.1 Orifice inserts (nly type BWN 1 and BWH 1!) When an rifice is required fr functinal reasns at the entries f valves B, P, I, C, O, Y, H, M, S and T, then it must be stated in uncded text which valve (cding and psitin number starting frm the cnnectin blck) shuld be fitted with which rifice. Currently available #0.7 (fr retrfitting rder N ) Example: BWN1A-5-FHHJ-1-1-G 24; Valve H, sectin 2 with rifice #0.7 Flw resistance p (bar) Flw Q (lpm) 4.2 Directinal valve sectin Fr retrfitting within directinal valve banks e.g. instead f the clearance with end plates 11, 12, 21, 22 etc. (sect. 2.3). In case f further extensin, a tensin rd can be rdered accrding t the new number f valves. Order example fr valve sectin: BWH2 - H G 24 Type cde and size acc. t sect. 2.1, table 1 Symbl acc. t sect Nm. vltage acc. t sect. 2.1, table 3 Prt acc. t sect. 2.1, table 2 1 = G 1/4 (BWN(H) 1 and BWH 2) 2 = G 3/8 (BWH 3) When threading the valve sectin nt the tensin rd, care must be taken that the O-rings ; d nt get lst! Example End plate cding 11(21) cnsisting f: Cap nut < USIT-ring / washer = Valve sectin t be installed by the custmer Installatin directins: 1. Remve cap nut with seals and end plate frm the tensin rd 2. Thread n valve sectin 3. Push n end plate with USIT-ring and tighten cap nut with 25 Nm. One USIT-ring and the tubular spacer will n lnger be needed. Tubular spacer > 1) End plate with USIT-ring / washer = BWN(H) 1 BWH 2 BWH 3 ; O-ring NBR 90 Sh #5x1.5 and #6.07x1.78 #10.82x1.78 #11x1.5 < Cap nut HAWE-Nr ISO 4032-M8-8-A2K ISO 4032-M12-8-A2K Max. trque 20 Nm Max. trque 40 Nm Max. trque 80 Nm = USIT-ring U8.7x16x1 washer ISO HV-A2K ISO HV-A2K > Tubular spacer HAWE-N HAWE-N HAWE-N ) With end plate cding 12 (22, 332 etc.) tw tubular spacers > with USIT-ring in between = 4.3 Blanking plate An already assembled sub-plate with blanking plate can be used instead f a clearance (see sect. 2.3 end plates) fr valves t be retrfitted. They can be fitted anywhere within the valve bank. An X is appended t the cde lette (sectin and 2.4.2) f the directinal cntrl valve t be retrfitted. The fllwing are available: HX, MX, NX, RX, BX, CX, EX, QX, PX, OX, YX, IX, SX, TX and AX. A cmbinatin with pressure switches acc t sect is pssible. Example: BWN1A-1/200-FHHX-1-1-G 24 Nt available fr directinal spl valves W and G. ( WX and GX d have a different meaning, see sectin 2.4.1). Necessary parts: BWN 1 and BWH 1 1 Blanking plate O-rings 6x1.5 NBR 90 Sh 4 Screws ISO 4762-M4x A2K Height 10 mm BWH 2 1 Blanking plate cmplete BWH 3 1 Blanking plate cmplete Height 10 mm Height 12 mm
19 D 7470 B/1 page way pressure reducing valve fr BWN(H) 1 and BWH 2 (Prductin is running ut) Permissible inlet pressure 300 bar Order example: BWH 2 A-2/100-HR Z5 2) -HH-1-G 24 Pressure range (bar) adjustable frm... t 1 ) Standard versin Tl adjustable Manually adjustable Tl adjustable With a 2/2-way seated valve upstream WN 1 D WN 1 F Manually Tl adjustable adjustable Manually adjustable WH 2 D (WH 1 D) Tl adjustable Manually adjustable WH 2 F (WH 1 F) Tl adjustable Manually adjustable Vers. Z11 t Z48 with add. pressure switch acc. t D ) Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z11 Z12 Z13 Z14 Z15 Z16 Z17 Z18 Z21 Z22 Z23 Z24 Z25 Z26 Z27 Z28 Z31 Z32 Z33 Z34 Z35 Z Z37 Z38 Z41 Z42 Z43 Z44 Z45 Z46 Z47 Z48 Z Z484 with DG 34 Z Z485 with DG 35 Z Z486 with DG Z Z4865 with DG 5 Symbls Tl adjustable Manually adjustable 1) Set value fr secndary pressure (pressure gauge reading) at flw Q = 0 lpm (cnsumer in end psitin). The pressure drps a little if pressurised il flws t the cnsumer. 2) As single unit fr wn strage, replacement, etc. rder cde is: BWN 1 and BWH 1: ADZ1-Z1 (t Z28; resp. Z114 t Z2865) - G12(24) r...- WG 230 BWH 2: ADZ2-Z1 (t Z8; Z31 t Z48 resp. Z314 t Z4865) - G12(24) r...- WG 230, see abve 3) Only fr type BWN(H) 1 Fr adjustment ranges see abve. Mnitring f the pump sided (primary) P duct. Nte: Versin Z1... Z8 can t be used with pressure switch, as the leakage il cnsumptin wuld lead t the permanent n/ff switching f the pump being cntrlled by the DG... Type Z1 t Z8 Type Z11 t Z28 Type Z114 t Z2865 Directinal valve acc. t D 7470 A/1 apprx. 81 apprx (manually adjustable) 80 (tl adjustable) apprx. 62 Prts M = G 1/4 ISO 228/1 (BSPP)
20 D 7470 B/1 page Appendix 5.1 Cnnectin blck with prprtinal-pressure limiting valve type AP Prprtinal pressure limiting valves type PMVP 4 (acc. t D 7485/1) are utilized here, fr cntrl characteristic etc. see D 7485/1. The electric cntrl requires a prp. amplifier e.g. EV1M2 acc. t D 7831/1 r EV1G1 acc. t D Available utput vltage 12 V DC r 24 V DC, this vltage is usually identical t the slenid vltage f the directinal valves. Otherwise this has t be stated in the rder cding. The minimal pressure setting is 5 bar due t functinal reasns (cntrl f the pilting sectin). This min. figure may be raised via a set screw. Order example: BWH 1 AP /420 - HH G Fitted screen filters as standard T prevent sudden disturbance caused by carse cntaminatins that may ccasinally be carried alng in the il (such as trn ff particles f tubing, packing, scale, swarf) directinal seated valves are fitted with screen filter elements 0.25 mm mesh width in the prts P and A. The directinal spl valves cannt be fitted in the husing with these filter elements because f the prt design, but they are less sensitive t the cntaminatins mentined abve. These screen filter elements shuld nt be seen as a replacement fr the usual hydraulic filters. In practice, hwever, they prvide sufficient prtectin against malfunctins in small hydraulic systems. When such malfunctins shuld ccur, the filter elements shuld be checked first. Fr the sake f simplicity, the filter elements are nt explicitly shwn in the diagrams. 5.3 Release ratis with spl valve (fr type BWN 1 and BWH 1) Max. flw Apprx. 5 lpm (BWN 1) Apprx. 8 lpm (BWH 1) Cntrl pressure p St Min. pressure in the P duct (guideline) Fr releasing p St = a p A(B) + 6 (bar) Fr keeping pen p St = p A(B)dR + p R + 10 (bar) 1 a = 2.67 Release rati p A(B) Pressure at prt A(B) in clsed state p A(BdR See p-q-curves p R When flw resistance ccurs frm the valve t the tank p / Q-curves Back pressure p (bar) There is als a release rati f 1:3.8 available. Indicate in uncded text, if this is required. Example: BWH1 A-5-HKR-1-1-G 24 valve K with release rati 1:3.8 Flw Q (lpm) Oil viscsity during measur. apprx. 60 mm 2 /s 5.4 Installatin instructin Check valve insert EK 01 Only fr WN 1 type valves cding Q and N acc. t sect Screen filter (sect. 5.2) O-ring 6x1.5 NBR 90 Sh Installatin side Due t the O-ring s elasticity, the check valve may mve and prtrude a few tenths f a millimetre befre being blted t the sub-plate. If the valve WN 1 is filled with il (e.g. due t functinal test n a test rig previusly), tightening f the blts may cause a cmpressin f the trapped il due t the check valve being frced in. The resulting pressure wuld exceed the ne at which the slenid is still able t actuate. While tightening the munting screws, it is therefre advisable t press either the manual emergency actuatin (D 7470 A/1, see sect. 4.1) r energise the slenid via the valve. This prblem cannt ccur with WH 1 type valves due t the hydraulic relief Slenid heat built-up Directinal valve banks slightly reduce the heat dissipatin t the surrundings because f the small distance between neighburing valve slenids. It is therefre advisable t lcate at least ne unactuated valve between valves actuated simultaneusly r fr lnger perids. Otherwise neighburing valves wuld hinder heat dissipatin and heat each ther up. This rule shuld be beyed, if the duty cycle f the valves is abve 60% ED. If this is nt pssible it is recmmended t use ecnmy circuits acc. t D 7813, D 7832, D 7833.
21 D 7470 B/1 page Applicatin example fr end plates with release valve acc. t sectin 2.3 Accumulatr permissible pressure p 4 Safety valve fr accumulatrs with TÜV apprval 1 ) D 7000 TÜV, e.g. set t p 4 r p 3 max Main pressure limiting valve 1 ) set t p 3 Pressure switch, e.g. set n p 2, t switch-ff the pump Thrttle check valve, e.g. RDF... D 7540 The rifice # shuld be selected acc. t the p-q-curve such that the permissible flw rate Q max fr the valve bank is nt exceeded at the highest pssible perating pressure p 2. End plate with discharge valve Example: valve bank BWN 1F - HM G 24 Pressure definitins cnfrming CETOP RP62H p 2... Upper perating pressure f the hydraulic circuit, e.g. als switch-ff pressure fr the pump drive p 3... Pressure setting f the perating pressure valve (e.g. p 2 max ) p 4... Permissible perating pressure f the hydraulic accumulatr 1) The unit apprved accumulatr safety valve secures the hydraulic accumulatr against unpermissible excess pressure. Supplied with fixed pressure setting and lead seal e.g. at the highest permissible accumulatr pressure p 4 r a pressure p 3 max that is still permissible fr the hydraulic system. The adjustable limit fr the max. perating pressure p 2 r p 2 max intended fr the hydraulic system is nrmally achieved by the perating pressure limiting valve, shut-ff valve (e.g. D 7529, D 6170-ALZ) r ther devices (e.g. pump cut-ff r pump idle circulatin activated by a pressure switch). 5.6 Cmbinatin f directinal valves f type BWN 1 with BWH 1 A cmbinatin f these tw basic types is pssible, but the permissible peratin pressure fr the respective basic type and flw pattern symbl have t be taken int accunt. Order examples: One r several WH valves within a BWN valve bank BWN/H1A-5 - MR/NQ/HT -1-1-G 24 One r several WH valves at the end f a BWN valve bank BWN/H1A-1/120 - MRHT/NN -1-1-WG 230 One r several WN valves at the end f a BWH valve bank (it is then regarded as a valve bank type BWH). BWH/N1A-2/220 - NJ/HH -1-1-G 24 One r several WN valves tgether with an upstream lcated -CZ../... (sect. 2.5) at the end f a BWH valve bank BWH/N1A-1/300 - HR/CZ 2/180 HM -1-1-G 24. CZ../... is then regarded as part f the WN part f the valve bank, therefre its cding is lcated after the slash. Observe the permissible inlet pressure, see sectin 2.5!
22 D 7470 B/1 page Mass (weight) apprx. in kg, individual elements Cnnectin blcks acc. t sectin 2.2 A1/.. t A4/.. 5 F F1 C D K P AP... BWN(H) 1 BWH 2 BWH End plates acc. t sectin a , 21 and t 5 3../ t / t 565 with pressure limiting valve MVP(X)4E/... BWN(H) 1 BWH 2 BWH (1.3 with DG) Directinal seated valves acc. t sectin 2.4.1, and acc. t sectin a Nte: B1. C1 etc. identical A B, C, D, E, F, H, M, N, O, P, Q, R J and U Y and I W and WX K acc. t sectin (additinal elements ) with pressure switcht with1 DG with 2 DG with pressure limiting valve H(1)/..; M(1)/.. J/..; J1/.. N(1)/..; R(1)/.. U/..; U1/.. BWN(H) 1 BWH 2 BWH (2.0 with DG) Pressure reducing valves acc. t sectin and 4.4 BWN(H) 1 BWH 2 - CZ X - LZ X 0.5 (0.7) 1 ) - CZ... - LZ (1.4) 1 ) Z1 t Z Z11 t Z Z114 t Z ) Figures in brackets = with DG Additinal elements Directinal seated valve with pressure limiting valve (sect ) Sub-plate with DG (sect ) Directinal seated valve with return pressure stp and DG (sect ) H6(7, 8)XX Separatin plate (sect ) X Blanking plate (sect. 4.3) BWN(H)
23 D 7470 B/1 page Type ver view Order example: BWN1 A-1/300 - H1/250 M3 - CZ1/180/5R/4 - WX - 33 / G 24 BWH2 F - J4/250 N3 HHHR WG 230 End plate (additinal elements, see sect. 2.3) 3, 4, 5, 6, Pressure switch (DG 3. acc. t D 5440) (with end plates 3, 4 and 5 nly) /33, /34, /35, 2. Pressure switch (DG 3. acc. t D 5440) /, /65 (with end plates 3 and 4 nly) 2 and /2 Prepared fr retrfitted munting f the 1. r 2. pressure switch (with end plate 4 and 5 nly) 1 and 2 Clearance fr 1 r 2 valves (tubular spacer) MVP4.. and MVPX4.. Order example: G 12, G 24, WG 110, WG 230 (fr ther vltage see D 7470 A/1 sect ) Prts acc. t ISO 228/1 (BSPP) 1 G 1/4 (BWN(H) 1 and BWH 2) 2 G 3/8 (BWH 3) Munted pressure limiting valve (types MVP 4 r MVPX 4 acc. t D 7000/1 r D 7000 TÜV, nly with end plate 5) End plate (see sect. 2.3) 1 Standard 2 End plate with discharge valve 3 End plate with ne r tw pressure switches 4 End plate 3, with additinal drain valve 5 End plate with ne pressure switch and munted pressure limiting valve Valve sectins - additinal elements (see sect , and 2.5.4) 1 Return pressure stp 2 and 62 Prepared fr retrfitted munting f a pressure switch (DG in the cnsumer r pump duct) 3, 4, 5,, 65 Pressure switch (DG 3.. acc. t D 5440) in the cnsumer duct 6, 7, 8, 66, 665 Pressure switch (DG 3.. acc. t D 5440) in the pump duct XX Added t the cding fr pressure switch (cding ), shut-ff valve acc. t sect /.. Pressure limiting valve with pressure specificatin in the cnsumer duct X Blanking plate (sub-plate withut valve, acc. t sect ) Valve sectins / flw pattern (see sect , 2.4.2, 2.4.3, and 4.4) D, F, B, Q, A, C, P,O 2/2-way functin (seated valve) F/.., D/.. 2/2-way functin (seated valve with pressure limiting valve, sect ) H, N, M, R, I, Y 3/2-way functin (seated valve) W, WX 4/2-way functin (directinal spl valve, with type WN 1 nly) S, T 4/2-way functin (seated valve) J, U, V 3/3-way functin (cmbinatin f tw seated valves) K 4/3-way functin (cmbinatin f tw seated valves) with shut-ff valves, tw pressure switches available) -CZ... Pressure reducing valve acting fr system dwnstream (with/withut shut-ff valve, with/withut pressure switch, adjustable manually r with tls, several pressure ranges) -LZ... Pressure reducing valve with pressure functin Z1.. t Z8.. Pressure reducing valve (running ut f prductin, see sect. 4.4) -3.- t -65- Pressure switch n individual sub-plates within the valve bank, sect X- separating plate acc. t sect Cnnectin blcks fr pipe munting (see sect. 2.2) A-1/.., A-2/.. With pressure limiting valve (adjustable with tls r manually) with pressure specificatin A-3/.., A-4/.. With pressure limiting valve (adjustable with tls r manually) with pressure specificatin (steel husing) A-5 Withut pressure limiting valve AP-.. With prp. pressure limiting valve (sect. 5.1) Adapter plates fr munting nt hydraulic pwer units (sect. 2.2) F, F1 Fr types HC (D 7900), MP (D 7200 H), FP (D 7310) and HK (D ) S, L Fr type LP (D 7280 H) C Fr types R (D 6010 H ++) and Z (D 6820) Adapter plates fr munting nt directinal valve banks (sect. 2.2) K Fr types SWR 1 (D 7450) Basic type cding and size (see sect. 2.1 table 1) BWN 1, BWH 1, BWH 2, BWH 3 (size 1, 2 and 3) Only size 1: Cmbinatin types available BWH/N 1 r BWN/H 1 (see sect. 5.6)
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