Pilot Operated Check Valves Catalog Quick Reference Pilot Operated Check Valve, Pilot to Open 12 l/min 3 US gal/min 25 l/min 7 US gal/min 30 l/min 8 US gal/min 70 l/min 18 US gal/min Flow* 20 l/min 5 US gal/min 45 l/min 12 US gal/min 95 l/min 25 US gal/min 130 l/min 34 US gal/min 230 l/min 61 US gal/min Flow* 30 l/min 8 US gal/min PO - Pilot Operated Check Valves Quick Reference Description Pilot Operated Check Valve, Reverse Pilot to SDC10-3S Open Description Pilot Operated Check Valve, Pilot-to-open with drain * Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted....

Pilot Operated Check Valves Catalog Quick Reference Pilot Operated Check Valve, Reverse Pilot-toopen with vent Description Pilot Operated Check Valve, Pilot to Close Flow* 45 l/min 12 US gal/min 115 l/min 30 US gal/min 190 l/min 50 US gal/min Cavity none Flow* 85 l/min 22 US gal/min Description Pilot Operated Check Valve, Catalog HIC * Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only. 11141715 • Rev AB • May 2014 PO - Pilot Operated Check Valves Quick Reference Dual Pilot-Operated Checks

Pilot Operated Check Valves Catalog Application Notes MOTION CONTROL VALVES Motion control valves, also referred to as load holding valves, are used to control the motion of a load in the following ways: · Prevent a load from dropping in case of hose or tube failure. Prevent a load from drifting caused by directional control valve spool leakage. Provide smooth, modulated motion when the load is in a lowering or run-away mode. Provide smooth, modulated motion when the directional control valve is suddenly closed. There are two basic types of motion control valves: Pilot-operated, or pilot-to-open...

Pilot Operated Check Valves Catalog Application Notes PILOT-OPERATED CHECK VALVES Pilot-operated, or pilot-to-open check valves will positively hold a pressurized load and will release the load upon application of a pressure signal to the pilot port. Pilot-operated check valves are available as individual cartridges, standard Cartridge-In-Body (CIB) packages, or can be created in custom manifolds by using a standard check valve such as CV10-NP with a guided pilot piston. For more information on pilot pistons, see Accessories. Individual cartridges A typical circuit application for pilotTypical...

Pilot Operated Check Valves Catalog Application Notes PILOT-OPERATED CHECK VALVES (continued) The pressure required to pilot open the check valve can be calculated by: P = W + (Pc • Ab) cylinder retracts (Ab • R) - Ar W + (Pc • Ar) cylinder extends P= (Ar • R) - Ab W = Load Pc = Check valve crack pressure (typically 0.34-4.5 bar [5-65 psi]; consult catalog sheets for details) Ab = Cylinder bore area Ar = Cylinder rod area R = Check valve pilot ratio (typically 3:1 or 4:1; consult catalog sheets for details) Note that these equations are idealized and do not consider any backpressure in the circuit,...

Pilot Operated Check Valves Catalog Pilot to Open RPC 04 This is a pilot-to-open check valve. pressure drop bar 26 cSt [125 SUS] hyd.oil @ 20° C [68° F] 20 Specifications Rated pressure 210 bar [3000 psi] Rated flow at 7 bar 12 l/min [100 psi] [3 US gal/min] Weight 0.06 kg [0.13 lb] Pilot ratio 3.2:1 Cavity NCS04/3 Note: A piston seal requires a 4.5 bar [65 psi] or greater return spring. Cross-sectional view ORDERING INFORMATION RPC 04 - 2.5 - OR - 00 - V Pressure to open 0.5 = 0.5 bar [7 psi] 2.5 = 2.5 bar [36 psi] 5.0 = 5 bar [72 psi] Piston seals OR = Seal Omit = No seal Seals V = Viton Omit...

Pilot Operated Check Valves Catalog Pilot to Open RPC 06 OPERATION This is a pilot-to-open check valve. pressure drop 26 cSt [125 SUS] hyd.oil @ 20° C [68° F] PO - Pilot Operated Check Valves RPC 06 Rated pressure 315 bar [4500 psi] Rated flow at 7 bar 25 l/min [100 psi] [7 US gal/min] Weight 0.10 kg [0.22 lb] Pilot ratio 3.4:1 Cavity NCS06/3 Note: A piston seal requires a 4.5 bar [65 psi] or greater return spring. ORDERING INFORMATION RPC 06 - 5 - OR - 00 - V Pressure to open 0.5 = 0.5 bar [7 psi] 5 = 5 bar [73 psi] Piston seals OR = Seals Omit = No seals Seals V = Viton Omit = Buna-N Housing...

Pilot Operated Check Valves Catalog Pilot to Open CP450-1 OPERATION This valve is a pilot-to-open check valve. Specifications Rated pressure Rated flow at 7 bar [100 psi] Leakage free flow pilot open 240 bar [3480 psi] 30 l/min [8 US gal/min] 6 drops/min @ Rated pressure Weight 0.09 kg [0.20 lb] Pilot ratio 3.0:1 Cavity SDC10-3 Note: A piston seal requires a 4.5 bar [65 psi] or greater return spring. Cross-sectional view ORDERING INFORMATION CP450 - 1 - B - 8S - 015 - 0 Seals B = Buna-N V = Viton Body and ports 0 6S 8S SE3B SE4B Body P/N Cartridge No body Aluminum, #6 SAE CP10-3-6S Aluminum,...

Pilot Operated Check Valves Catalog Pilot to Open RPC 12 OPERATION This is a pilot-to-open check valve. Theoretical performance pressure drop 26 cSt [125 SUS] hyd.oil @ 20° C [68° F] Rated pressure 315 bar [4500 psi] Rated flow at 7 bar 70 l/min [100 psi] [18 US gal/min] Weight 0.20 kg [0.44 lb] Pilot ratio 2.8:1 Cavity NCS12/3 Note: A piston seal requires a 4.5 bar [65 psi] or greater return spring. PO - Pilot Operated Check Valves RPC 12 Cross-sectional view ORDERING INFORMATION RPC 12 - 5 - OR - 00 - V Pressure to open 0.5 = 0.5 bar [7 psi] 5 = 5 bar [73 psi] Piston seals OR = Seals Omit =...

Pilot Operated Check Valves Catalog Reverse Pilot to Open CP458-2 OPERATION This valve is a pilot-to-open check valve. Theoretical performance Specifications Rated pressure Rated flow at 7 bar [100 psi] Leakage pilot open 210 bar [3000 psi] 20 l/min [5 US gal/min] 6 drops/min @ Rated pressure Weight 0.07 kg [0.15 lb] Pilot ratio 2.8:1 Cavity SDC08-3 Note: A piston seal requires a 4.5 bar [65 psi] or greater return spring. PO - Pilot Operated Check Valves CP458-2 Pressure drop Cross-sectional view ORDERING INFORMATION CP458 - 2 - B - 6S - 065 - 0 Seals B = Buna-N V = Viton Housing and ports 0...