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A screw-in, cartridge-style, hydraulic check valve for use as a blocking or load-holding device.
The CV08-21 allows flow passage from ➁ to ➀, while normally blocking oil flow in the opposite direction.
The cartridge has a fully guided poppet which is spring-biased closed until suffi cient
pressure is applied at ➁ to open to ➀
• Hardened seat for long life and low leakage.• Fully guided poppet.• Compact size.
Operating Pressure: 240 bar (3500 psi)
Flow: See Performance Chart
Internal Leakage: 0.25 cc/minute (5 drops/minute) max. at 240 bar (3500 psi)
Crack Pressure Defi ned: Gauge bar (psi) evident at ➁ at 16.4 cc/minute (1 cu. in./minute) attained
Standard Bias Spring at Crack: 2.1 bar (30 psi) nominal. Actual cracking pressure may vary from 1.9 to 2.8 bar (27 to 40 psi); valves which are not actuated for a period of time may initially crack at higher than subsequent cracking pressures.
Temperature: -40 to 120°C
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC08-2; See page 9.108.1
Cavity Tool: CT08-2XX; See page 8.600.1
Seal Kit: SK08-2X-B; See page 8.650.1
