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 maintain pressure behind the valve cnstant, n cnditin that pressure in frnt f the valve is higher. The valve may als be applied where undesirable pressure increase behind the valve culd appear. An additinal cnnectin t a tank is then pen in rder t reduce excessive pressure increase. DESCRIPTION OF OPERATION UZRB6/23-210 Y 1 A1 P1 A P (B*) T 6 5 4 3 1 2 The spl (2) is held in neutral psitin in the husing (1) by the spring (3). At the same time pressure in line A affects the spl surface ppsite the spring. The valve is pen in initial psitin. The spring frce is set by turning the hand knb (6) f the setting element (5), which is screwed in the sleeve (4). If pressure exceeds the value set at the spring, the spl mves alng and reduces the flw frm P t A. Thus larger restrictin f the flw will fllw and as a result pressure behind the valve will be limited. If pressure in line A cntinues t rise, cnnectin frm P t A is cut ff. The spl (2) is pushed further against the spring and line A is cnnected t T. Oil drains until pressure stps t increase. Optinally, the valve in versin UZRB6 Z can be equipped with check valve, which allws free flw in directin frm prt A t P. -1- WK 424 770 03.2015
TECHNICAL DATA Hydraulic fluid Required fluid f clec leanline ness classc Nminal fluid viscsity Viscsity range Fluid temperature range (in a tank) Ambient temperature range Max perat ating pressure (n inlet) Max x set pressure (in linep) Max x flw f rater Weight mineral il ISO 4406 class c 20/18/15 2 37 mm /s at temperature 55 C 2,8 up t 380 mm /s recmmended 40 C up t 55 C max - 20 C up t +70 C line nes s P, P A, B 31, 1,5 MPa line T 1,5 MPa 21 MPa (at pressure in linet = 0 MPa) 3 30 dm /min 1,4 kg 2-20 C up t +70 C INSTALLATION AND OPERATION REQUIREMENTS 1. Only fully functinal and peratinal valve must be used. 2. During the perid f peratin must be kept fluid viscsity acc. t requirements defined in this Data Sheet - Operatin Manual 3. In rder t ensure failure free and safe peratin the fllwing must be checked: prper wrking f the valve cleanliness f the hydraulic fluid 4. Due t heating f valve bdy t high temp., the valve shall be placed in such way t eliminate the risk f accidental cntact with the valve bdy during peratin r t apply suitable cvers acc. t PN-EN ISO 13732-1 and PN - EN 982 5. In rder t prvide prper tightness f the valve cnnectin t a hydraulic system, ne shuld ensure dimensin f sealing rings, tightening trques and valve peratin parameters as specified in this Data Sheet - Operatin Manual. 6. A persn that perates the valve must be thrughly familiar with this Data Sheet - Operatin Manual. DIAGRAMS Hydraulic diagrams f the valve type UZRB RB6... M M A P T B versin UZRB6...Y... A P T B versin UZRB6...Y...Z... WK 424 770 03.2015-2-
OVERALL AND CONNECTION DIMENSIONS S6 O35 25,7 50 S 6 S 19 4 5 T1 31 A1 (B1*) 32,5 44 2 O9,5-4 depth hles 207 P1 40,5 64 80 12,8 17,5 1 60 S 19 S 30 strke 11 237 3 60 58 62 O5,3-4 hles 6 44 (min) 7 46 A P 18 11 strke T 19 27,8 40,5 64 (min) (B*) 0,75 (10,3*) 5,95 16,25 12 (min) S 28 M5 depth 10-4 hles O7,6 (max) - 4 hles (P,T,A,B) 8 26,55 31,75 32,5 248 r 0,01/100 mm 0,63 1 - Adjustment element1 (handknb) 2 - Adjustment element2 (set screw with hexagn scket) 3 - Adjustment element3 (lckable handknb) 4 - O-r -ring 9,2 x 1,8-4 pcs/set 5 - Manmeter cnnectin - plugg 1/4 (S6) - depth 12 6 - Space required t remve the key frm the lck f the adjustment - item (3) 7 - Prting pattern - cnfiguratin f cnnectin hles f a subplate in accrdance with the standard IS O 4401 - identified by ISO 4401-03-02-0-94 (nminal size CETOP 03) fixing screws M5 x 65-10. 0.9 in accrdance with PN - EN ISO 4762-4 pcs/set included in the scpe f supply; tightening trque Md = 9 Nm 8 - Subplate surface required NOTE: (*) - cnnectin element nt used by a valve type UZRB RB6-3- WK 424 770 03.2015
PERFORMANCE CURVES 2 measured at viscsity ν = 41 mm /s and temperature t = 50 C Outpu tput t pressure in relat atin t flw rate r p A(Q) p [MPa MPa] A 25 20 15 10 5 characteristics curves p A(Q) at different values f set pressure flw directin A T P A 21 MPa 15 MPa 7,5 MPa 2,5 MPa Effect fect f flw f changec nges n utpu tput t pressure p p [MPa MPa] A min p [MPa MPa] 0,6 0,5 0,4 0,3 0,2 0,1 Flw resist stance curc urve at flw f thrt hrug ugh check valve ve 1,6 1,4 1,2 1,0 0,8 0,6 0,4 0,2 20 10 0 10 20 30 Q [dm 3 /min] A min (Q) characteritics curves minimum utput pressure drp in relatin t flw rate p A min(q) at different ranges f flw rate; flw directinp A 0 1 2 3 4 5 6 7 8 Q [dm 3 /min] characteristic curve f pressure drp in relatin t flw rate p(q) at flw thrugh check valve; flw directin A P 0 5 10 15 20 25 30 Q [dm 3 /min] WK 424 770 03.2015-4-
HOW TO ORDER UZRB Nminal size(ns) NS6 = 6 6 Y * Series number (20-29) - cnnectin and installatin dimensins unchanged = 2X series 23 = 23 Settable pressure range up t 2,5 MPa = 25 up t 7,5 MPa = 75 up t 15 MPa = 150 up t21 MPa =210 Cntrlling circulatin internal pilt flw supply, external leakage drain via line T (fr all valve versins) = Y Adjustment element rtary knb =1 set screw with internal hexagn = 2 lckable rtary knb = 3 Check valve withut check valve = n designatin with check valve (free flw directin frm prta t P) = Z Sealing NBR(fr fluids n mineral il base) FKM (fr fluids n phsphate ester base) = n designatin = V Further requirements in clear text (t be agreed with the manufacturer) NOTES: The pressure reducing valve shuld be rdered accrding t the abve cding. The symbls in bld are the preferred versins available in shrt delivery time. Cding example: UZRB6/23-210 Y 2-5- WK 424 770 03.2015
SUBPLATES AND FIXING SCREWS Subplates must be rdered accrding t catalgue sheet WK 496 480. Subplate symbls: G 341/01 - threaded cnnectins G 1/4 G 342/01 - threaded cnnectins G 3/8 G 502/01 - threaded cnnectins G 1/2 G 341/02 - threaded cnnectins M14 x 1,5 G 342/02 - threaded cnnectins M16 x 1,5 Subplates must be rdered separately. Valve fixingscrews M5 x 65-10, 0,9 in accrdance with PN - EN ISO 4762-4 pcs/set included in the scpe f supply. Tightening trquemd d = 9 Nm The sub ubpla late symb ymbl in bld is the preferred erred vers ersin avai aila lable le in shr rt delivery ery tim ime. PONAR Wadwice S.A. ul. Wjska Plskieg 29 34-100 Wadwice tel. +48 33 488 29 00 fax.+48 33 488 21 03 www.pnar-wadwice.pl WK 424 770 03.2015-6-