RV12-S6
2Pages

Product Information PRESSURE VALVEPilot-Operated,Spool-type, Relief Valve Type: RV12-S6 Max. operating pressure: 250 bar (3600 psi) Proof pressure: 375 bar (5500 psi) Flow: 190 L/min Description RV12-S6 is a screw-in, two stage pilot-operated,spool-type cartridge relief valve, applied as a pressure control device for hydraulic circuits with high demanding on fast response and low hysteresis. Operation The RV12-S6A blocks flow from © to ® , until sufficient pressure is applied at © to force the pilot relief off its seat. The pilot flow cause the pressure differential across the main spool,resulting in the valve shift and flow opening from © to ® . The RV12-S6A offers fast response to load changes in hydraulic circuits. Note: Back pressure at ® will increase the pilot pressure required at © to shift, at a ratio of 1:1. The RV12-S6A cannot be used in crossover relief applications. Technical Data Max. operating pressure 250 bar (3600 psi) Proof pressure 375 bar (5500 psi) Flow See performance chart Internal leakage 115 ml/min(7 cu.in./min) max. at 85% of normal setting Crack (Set) pressure defined_ Reseat pressure Standard spring ranges Temperature range Fluid Installation Cavity Cavity tool Seat kit Bar evident at 7.6 L/min attained Nominal 90% of crack pressure Factory default preset value: 50% of rated pressure (See chart 1) -40°C ~ 120°C with standard buna seals -26°C ~ 204°C with fluorocarbon seals -54°C ~ 107°C with polyurethane seals_ Mineral based or synthetics with lubricating properties at viscosities of 7.4 ~ 420 cSt (50 ~ 2000 ssu) No restriction VC12-2_ (Chart 1: Standard Spring Range)

Pilot-Operated,Spool-type, Relief Valve Product Information Materials • Fast and smooth response to pressure changes. • Positive stops prevent springs from going solid. • Compact size. • Adjustments cannot be backed out of the valve. • Industry common cavity. • Hardened spool and cage for long life. Pilot-Operated Spool ■ Adjustment Option- 6mm. Hex Allen Head A 40mm. Dia. Alum. Knob B Cover Cap C Seals- N=Buna N V=Fluorocarbon U=Polyurethane Porting None=Cartridge Only Preset value required by customer Omit=defaut value 4G=G1/2 6G=G3/4 8G=G1 10T=SAE10 12T=SAE12 16T=SAE16 Other porting...