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A screw-in, cartridge-style, hydraulic check valve for use as a blocking or load-holding device.
The CV12-21 allows flow passage from ➁ to ➀, while blocking flow from ➀ to ➁The cartridge has a fully guided check which is spring-biased closed until suffi cient
pressure is applied at ➁ to open to ➀
• Low check mass for anti-cavitation applications.
• Hardened seat for long life and low leakage.
• Optional bias springs for back-pressure application flexibility.
• Cost-effective cavity.
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 at ➀
Standard Bias Springs at Crack: 0.4 bar (6 psi); 1.8 bar (26 psi); 3.8 bar (56 psi)
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: See note in dimension drawing regarding minimum pilot drill diameter
Cavity: VC12-2 (Cavity Variation “A”); See page 9.112.1
Cavity Tool: CT12-2XX; See page 8.600.1
Seal Kit: SK12-2X-B; See page 8.650.1
