Product Information DIRECTIONAL VALVEPilot-Operated, Hydraulic Check Valve Type: HPC08 Operating pressure: 350 bar (5000 psi) Proof pressure: 525 bar (7500 psi) Flow: 30 L/min Description A screw-in, cartridge type, pilot-operated hydraulic check valve, which can be applied for unidirectional blocking or load holding circuits. Operation HPC08 allows flow from @ to ® , while blocking flow from the opposite direction. When the sufficient pressure is applied at © , the fluid can flow from ® to @ .The pilot ratio for this type of valve is 3.2:1, which means that the valve cannot be opened until at least 1/3.2 of the load pressure of ® is applied at © . Under the static or noload conditions, the valve is spring-biased to assure holding. A sealed pilot piston optional is available. Provide customized based-spring. Please contact customer service. Technical Data Operating pressure 350 bar (5000 psi) Proof pressure 525 bar (7500 psi) Flow See Performance Chart ® to @ : max. 0.25 mL/min (5 drops/min) iat 350 bar Internal leakage @ to © : max. 115 mL/min (7cu.in./min) at 250 bar (without sealed piston) @ to © : no leakage (without sealed piston) Spring bias Cracking pressure Temperature range Standard: 1 bar (14.5 psi) With sealed pistion: 5 bar (73 psi) 1 bar (14.5 psi); 5 bar (73 psi) -40°C ~ 120°C with standard buna seals -26°C ~ 204°C with fluorocarbon seals -54°C ~ 107°C with polyurethane seals Max. nominal valve: 10jm(NAS 8), ISO4406 19/17/14 Mineral based or synthetics with lubricating properties at viscosities of 7.4~420cSt (50-2000ssu) No restriction Flow (lpm/gpm) (Performance Chart) Cavity tool T/H08-3RC-T-G (Rough), T/H08-3FM-T-G (Finishing)

Pilot-Operated, Hydraulic Check Valve Product Information Materials • Optional for different spring range. • Hardened seat for long life and low leakage. • Compact size. • Industrial general cavity. • Optional sealed piston. Ordering Code HPC08 -** Cavity Seals- N=Buna N V=Fluorocarbon U=Polyurethane Sealed Piston- Porting — Bias Spring 010 = 1 bar (15 psi) 050 = 5 bar (73 psi) Blank = None S = with Sealed Piston Blank=Cartridge Only 2G = G1/4 3G = G3/8 4T = SAE4 6T = SAE6 Other porting types defined by customers Cartridge: Weight: 0.09 kg (0.20 lbs) ; Steel with hardened working surfaces and...