Parker C5V08 311 B1 026-67039-0 Check Valve
It is a high-performance hydraulic check valve, which belongs to Parker Hannifin's C5V series. The valve is designed to prevent reverse flow of hydraulic oil and ensure stable system pressure. It is widely used in construction machinery, industrial hydraulic systems and mobile equipment.
Key features
(1) Technical parameters
Type:
In-line check valve, allows free flow in one direction and is blocked in the reverse direction.
Opening pressure: 0.35 bar (standard), optional low opening pressure (0.1 bar) or high pressure version.
Pressure range:
Maximum working pressure: 350 bar (some models can reach 420 bar).
Burst pressure: ≥1050 bar, ensuring safety.
Flow capacity:
Cv value: 1.2 (refer to the curve for specific flow).
Recommended flow rate: ≤6 m/s, avoid turbulence and noise.
Interface size:
08 specification (corresponding to ISO 08, i.e. 1/2" NPT or G1/2" thread).
Material:
Valve body: Carbon steel nickel-plated (corrosion resistant) or stainless steel (316L).
Valve core: Hardened steel or ceramic (wear resistant).
Seal: NBR (standard), FKM (high temperature/chemical compatible) or polyurethane (impact resistant).
(2) Performance advantages
✅ Low leakage: Precision ground valve seat, excellent reverse sealing performance (leakage <1 drop/minute).
✅ Fast response: Spring preload design ensures fast closing (response time <10ms).
✅ Pollution resistance: Can tolerate ISO 4406 20/18 pollution level (no fine filtration required).
✅ Modular design: Can be integrated into a multi-way valve block or installed separately.