Needle valves

1 Needle valves DIVISIOND1 WWET01A1st EDITION MAY 2010 WARNING!Variations and modifications of technical features and dimensions are also reserves the right to stop production of each and any model listed in the catalogue with no on the text contained herein belong to WALVOIL . Partial and full reproductions or copies of this catalogue are IS NOT RESPONSIBLE FOR ANY DAMAGE CAUSED BY AN INCORRECT USE OF THE PRODUCT. DIVISIOND1 WWET01 AFluid:best use mineral oil with viscosity ranging between 10 and 200 :dirty oil is the main reason for failure and troubles of hydraulic parts and table below contains OLEOSTAR recommendations about the minimum oil contamination level according to individual specifications of different items. For further safety of your hydraulic equipment and of all valves assembled on it, we either recommend use suction filters (rather than return filters) or separated filter :make sure to provide suitable gasket lubrication with clean oil before screwing the cartridge on the valve body.

2 Also make sure to screw the cartridge manually in to reach against the gaskets in the valve :internal components made out of high grade steel duly treated and more information please ask our technical office .Working temperature:min. -25 C (-13 F) max. 90 C (194 F) with standard BUNA N gasketsmin. -20 C (-4 F) max. 200 C (392 F) with optional VITON gasketsRating diagrams:all rating diagrams of this catalogue are measured with mineral oil of 46 cSt viscosity at 40 (104 F) drawings dimensions are defined as TYPE OF EQUIPMENT - TYPE OF VALVECONTAMINATION LEVELA ccording to ISO 4406- Heavy duty equipment- Equipment running at 210-350 bar (3050-5100 psi) working pressure- Equipment using proportional controls- Equipment with high frequency cycles-/16/13- Equipment running up to 210 bar (3050 psi)

3 Working pressure- Spool-type valves - valves with calibrated ports-/18/14- Equipment running at low working pressure - Pilot plants and equipment- Equipment with low frequency cycles-/19/15mminGeneral InformationNEEDLE VALVES4 DIVISIOND1 WWET01 ATypeDescriptionMaximum flow up toMaximum pressurePagel/minUS gpmbarpsiVSRBA djustable, double acting2506645065007 VSRB/FF/../P. diagramTypeDescriptionMaximum flow up toMaximum pressurePagel/minUS gpmbarpsiVSRUA djustable, variable reverse flow,single acting, ball type15040450650019 VSRU/FF/../P. VL60163505100 VSRU/CAdjustable, variable reverse flow, single acting, poppet , variable reverse flow, single acting60163505100 TypeDescriptionMaximum flow up toMaximum pressurePagel/minUS , variable reverse flow, single acting5013250360033 Hydraulic diagramIndexNEEDLE VALVESH ydraulic diagram5 DIVISIOND1 WWET01 AAdjustmentsOptional adjustments.

4 Page 38 valves bodies2 Way Bodies ..page 393 Way bodies ..page 414 Way bodies ..page 43 How to order valves with bodies ..page 44 Cavities, tool and tap2 Way SAE Cavity ..page 45 IndexACCESSORIES6D1 WWET01 ADIVISIONBody ValvesTypeMax. flow Max. gpmbarpsikglbVSRB ,300,66 VSRB 38401140058000, 18 VSRB 12601635051000, 341002630043501, 1001504025036001, 114250662, , VL40110, VL60160, flowMax. pressureCavities and cavitySAE 8-2page 450, cavitySAE 10-2page 450, cavitySAE 12-2page 450, cavitySAE 16-2page 450, DIVISIOND1 WWET01 AType VSRB, VL and ADJUSTABLE VALVEO perationThe valve capacity can be adjusted by variation of the oil flow and hydraulic circuitRating diagramsOrder codeVUI38/ Pressionediaperturada1a2(bar) ,5)0, )5 Typical pressure drop vs.

5 Flow characteristics(psi)0123 456705101520253035(US gpm)VSRB VSRB 14 Needle adjustable valve,double acting9 DIVISIOND1 WWET01 ARating diagramsOrder codeDimensions and hydraulic circuit(psi)0036912 15185101520253035(US gpm)(US gpm)(psi)003691210203040506070- Portsize38)12)G3/8G118)M18x1,5/2 Typical pressure drop vs. flow characteristicsTypical pressure drop vs. flow characteristicsType VSRB 38-18-12dimensions are in mm-inType VSRB 38-18-12 Needle adjustable valve,double acting10 DIVISIOND1 WWET01 ADimensions and hydraulic circuitRating diagramsOrder code- (psi)005101520255101520253035(psi)051015 20253035(US gpm)(US gpm)010203040 VSRB Portsize34)100)G3/4G1 Typical pressure drop vs. flow characteristicsTypical pressure drop vs.

6 Flow characteristicsType VSRB 34-100dimensions are in mm-inType VSRB 14 Needle adjustable valve,double acting11 DIVISIOND1 WWET01 ARating diagramsOrder codeDimensions and hydraulic circuit(psi)0 10 20 30 40 50 60 7005101520253035(US gpm)VSRB ressure drop vs. flow characteristicsType VSRB 114 Needle adjustable valve,double actingType VSRB 38-18-121 DIVISIOND1 WWET01 ADimensions and hydraulic circuitRating diagramsOrder codeAB(psi)02468050100150200250(US gpm)VSRB /FF /14 /P . pressure drop vs. flow characteristicsType VSRB/ VLNeedle adjustable valve,double acting1 DIVISIOND1 WWET01 ARating diagramsOrder codeDimensions and hydraulic circuitAB0306090120(psi)036912(US gpm)VSRB /FF /38 /P . pressure drop vs. flow characteristicsType VSRB VLNeedle adjustable valve,double acting14 DIVISIOND1 WWET01 ADimensions and hydraulic circuitRating diagramsOrder codeAB0306090120(psi)05101520(US gpm)VSRB /FF /12 /P.

7 Pressure drop vs. flow characteristicsType VSRB/ VLNeedle adjustable valve,double acting15 DIVISIOND1 WWET01 ARating diagramsOrder codeDimensions and hydraulic circuitSection012345(US gpm)0100200300400500(psi)NB08A/A--0- Adjustments(seepage38)SMWS ealsB)V) lbftTypical pressure drop vs. flow characteristics(screw)(copped adjustment)(handknob calibrated)Type NB08 ANeedle adjustable valve16 DIVISIOND1 WWET01 ADimensions and hydraulic circuitRating diagramsOrder codeSection02468(US gpm)0306090120(psi)NB10A/A--0- Adjustments(seepage38)SMWS ealsB)V) lbftTypical pressure drop vs. flow characteristics(screw)(copped adjustment)(handknob calibrated)Type NB10 ANeedle adjustable valve1 DIVISIOND1 WWET01 ARating diagramsOrder codeDimensions and hydraulic circuit0306090120(psi)036912 1518(US gpm)NB12A/A--0- Adjustments(seepage38)SMWS ealsB)V) lbftTypical pressure drop vs.

8 Flow characteristics(screw)(copped adjustment)(handknob calibrated)Type NB12 ANeedle adjustable valve18D1 WWET01 ADimensions and hydraulic circuitRating diagramsOrder codeSection02468100 10 20 30 40 50 60 70 80 90 100Q[l/min ]DP [b ar ]0306090120(psi)0510152025(US gpm)NB16A/A--0- Adjustments(seepage38)SMWS ealsB)V) lbftTypical pressure drop vs. flow characteristics(screw)(copped adjustment)(handknob calibrated)Type NB16 ANeedle adjustable valveDIVISIONBody ValvesTypeMax. flowMax. pressureOpening pressure between U (A) and E (A1)Weightl/minUS gpmbarpsikglbVSRU performance graphs0, 38401140058000, 18 VSRU 12601635051000, 341002630043501, 1001504025036001, , 38401140058000, 18 VSRU/C 12601635051000, 341002630043501, 1001504025036001, 1142506625036003, , , , flow Max.

9 PressureOpening pressure from 2 to 1 with closed regulatorCavities and toolsWeightl/minUS gpmbarUS performance graphssee cavitySAE 8-2page 450, cavitySAE 10-2page 450, cavitySAE 12-2page 450, VRSU, VRSU/C, VRSU/FF/.. and valves WITH VARIABLE REVERSE FLOW, SINGLE ACTINGO perationThe oil flow is free from U (A) to E (A1) and capacity is adjusted during reverse flow by variation of the oil flow cartridges the ports are 1 and 2. 1 coincides with port E and 2 coincides with port 0 DIVISIOND1 WWET01 ADimensions and hydraulic circuitRating diagramsOrder code(psi)0123 456705101520253035(US gpm)VSRU 14 pressure drop vs. flow characteristicsType VRSU 14 Check valve with variable reverse flow, single acting, ball type 1 DIVISIOND1 WWET01 ARating diagramsOrder codeDimensions and hydraulic circuit- (psi)0036912 15185101520253035(US gpm)(US gpm)(psi)0369121020304050607077 VSRU Portsize38)12)G3/8G118)M18x1,5/2 Typical pressure drop vs.

10 Flow characteristicsTypical pressure drop vs. flow characteristicsdimensions are in mm-inCheck valve with variable reverse fllow, single acting, ball typeType VSRU 38-18-12 DIVISIOND1 WWET01 ADimensions and hydraulic circuitRating diagramsOrder code- (psi)005101520255101520253035(psi)051015 20253035(US gpm)(US gpm)010203040 VSRU Portsize34)G3/4100 )G1 Typical pressure drop vs. flow characteristicsTypical pressure drop vs. flow characteristicsdimensions are in mm-inType VRSU 34-100 Check valve with variable reverse flow, single acting, ball type DIVISIOND1 WWET01 ARating diagramsOrder codeDimensions and hydraulic circuit(psi)0123 456705101520253035(US gpm)VSRU/C pressure drop vs. flow characteristicsCheck valve with variable reverse fllow, single acting, poppet typeType VSRU/C 1424 DIVISIOND1 WWET01 ADimensions and hydraulic circuitRating diagramsOrder code- (psi)00036912 15185101520253035(US gpm)(US gpm)(psi)03691210203040506070 VSRU/C Portsize38)12)G3/8G118)M18x1,5/2 Typical pressure drop vs.