Hydraulic accumulator cut-off and protection unit type B20

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Gervais Johns
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Hydraulic accumulatr cut-ff and prtectin unit type B20 NS20 up t 36 a D SHEE - OERION NUL WK 491 810 07.

1 Hydraulic accumulatr cut-ff and prtectin unit type B20 NS20 up t 36 a D SHEE - OERION NUL WK LICION Hydraulic accumulatr prtectin and cut-ff unit is used fr cnnecting hydraulic accumulatr t the system while meeting safety requirements. he unit is cmplied with the regulatins f directive 2006/95/WE fr the fllwing vltages: V fr C V fr DC DESIGN DESCRIION he unit cnsists f a husing incrprating the fllwing sub-units: - ball cut-ff valve fr cnnecting and discnnecting the accumulatr with the hydraulic system - manual relief valve fr safe unlading f accumulatr after cut-ff - safety valve fr system prtectin - the valve can can be with CE apprval r withut If a unit with CE apprval valve is rdered, it is set t required pressure and sealed - slenid directinal valve fr electric cntrl f accumulatr unlading (in directinal valve versin) - threaded flange fr cnnecting the unit t the accumulatr (standard flanges enable cnnecting an EE accumulatr) ECHNICL D Hydraulic fluid Viscsity range Fluid temperature range (in a tank) mbient temperature range (versin) aximum perating pressure Nminal flw (at v = 6 m/s) Husing material Weight 36 a 150 dm 3/min steel ressure relief valve type DBDS10K... acc. t data sheet WK Slenid directinal valve type 2URED6C1-12/21...NZ4... acc. t data sheet WK Directinal cntrl valve supply vltages Nminal slenid pwer mineral il Required fluid cleanliness class ISO 4406 class 20/18/15 Nminal fluid viscsity 2 37 mm /s at temperature 55 C 2 2,8 up t 380 mm /s recmmended max withut slenid with slenid 12V DC; 24V DC r 230V 50Hz 26 W 6,4-6,9 kg 40 C up t 55 C -20 C up t +70 C -20 C up t +70 C ype B WK C up t +50 C

2 INSLLION ND OERION REQUIREENS 1. Only fully functinal and peratinal unit, prperly cnnected t electrical installatin must be used. Cnnecting r discnnecting the valve t an electrical installatin must nly be carried ut by qualified persnnel. 2. Grund cnnectin ( ) must be cnnected with prtective earth wire (E ) in supply system accrding t apprpriate instructins. 3. Slenid plug shall precisely adhere t scket and shall be secured with thread blt screwed in securely in a place. It is frbidden t perate the valve if the tightness and suitable clamp f cable in the plug gland are nt ensured. 4. During the perid f peratin must be kept fluid viscsity acc. t requirements defined in this Data Sheet - Operatin anual 5. In rder t ensure failure free and safe peratin the fllwing must be checked: cnditin f the electrical cnnectin prper wrking f the valve cleanliness f the hydraulic fluid 6. Due t heating f unit blck and slenid cils t high temp., the unit shall be placed in such way t eliminate the risk f accidental cntact with untit during peratin r t apply suitable cvers acc. t N - EN ISO and N - EN In rder t ensure tightness f unit blck, ne shuld take care f dimensin f sealing rings, tightening trques and valve peratin parameters given in this Data Sheet - Operatin anual 8. persn that perates the unit must be thrughly familiar with this Data Sheet - Operatin anual. DIGRS Graphic symbl f the prtectin unit type B20... B20R... B20... B B20RD... E B B20D... E WK ype B20

3 ERFORNCE CURVES measured at viscsity ν = 41 mm /s and temperature t = 50 C 2 erfrmance characteristics p-q fr valves NS10 (max discharge capacity f the valve fr varius pressures f adjustment peratin area f the valve must be within the white area f the diagram) p [a] ,5 erfrmance characteristics nt achieved by the valve Q [dm 3/min] ype B WK

4 OVERLL ND CONNECION DIENSIONS ,5 11 O = = , ,5 Cnnectin dimensins - pressure guage cnnectin - G1/4 - pump cnnectin - G3/4 - tank cnnectin - G3/8 - accumulatr cnnectin: G1 1/4; G2; 50 x 1,5 1 - Unit husing 2 - ccumulatr cut-ff valve 3 - Safety valve 4 - lug 5 - anual relief valve 6 - ressure shut-ff valve 7 - ccumulatr cnnectin 8 - Sealing -ring acc. t table 9 - Overall dimensin depending n versin max ccumulatr cnnectin G1 1/4 G2 50 x 1,5 Sealing -ring 17,3 x 2,4 22,3 x 2,4 37,77 x 2,62 WK ype B20

5 SOSÓB ZWINI B20 Relief methd manual = manual and electric = R Cntrl vltage fr slenid (nly versin...r...) 12V DC = G12 24V DC =G24 230V C 50Hz = W230R R * ressure relief valve type withut valve with pressure relief valve (n apprval) with pressure relief valve with CE apprval = = B = C Safety valve setting up t 2,5 a = 25 up t 5 a = 50 up t 10 a = 100 up t 20 a = 200 up t 31,5 a = 315 up t 33 a = 330 up t 36 a = 360 Fr valves with CE apprval specify pressure setting (factry setting and sealing) ccumulatr cnnectins thread G1 1/4 = G1 thread G2 =G thread 50 x 1,5 = Sealing NBR (fr fluids n mineral il base) FK (fr fluids n phsphate ester base) Further requirements in clear text (t be agreed with the manufacturer) = = V NOES: ccumulatr prtectin unit shuld be rdered accrding t the abve cding. he symbls in bld are the preferred versins available in shrt delivery time. Cding example: B20/ G24 B 100 G R ype B WK

6 ONR Wadwice S.. ul. Wjska lskieg Wadwice tel fax WK ype B20

Pressure reducing valve. Type UZRB6

Pressure reducing valve. Type UZRB6 Pressure reducing valve type UZRB6 NS 6 up t21 MPa up t 30 DATA SHEET - OPERA RATION MANUA NUAL dm 3/min WK 424 770 03.2015 APPLICATION Pressure reducing valve fr subplate munting type UZRB6 is used t