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$146.03
The Hyvair C20-20FS-7 is a steel inline check valve from the C20 series with 1-1/4 in (SAE-20) female SAE straight thread O-ring boss ports. It passes flow freely in one direction and blocks reverse flow. Maximum operating pressure is 3000 psi.
SAE O-ring boss ports seal on an O-ring compressed between the fitting and the port face. The threads hold the fitting in place; the O-ring does the sealing. That means no thread sealant, and the joint can be broken and remade during service.
Cracking pressure is 7 psi (0.5 bar). The check opens at low inlet pressure, so forward flow moves through with minimal resistance, and it closes again when flow tries to reverse. A flow direction arrow on the body marks which way the valve is meant to pass flow.
Fluid recommendations are petroleum based oil, ISO VG32 to 68, with a maximum fluid temperature of 180 °F and a maximum cold start viscosity of 250 SUS. Filter to 10 micron. Clean fluid protects the seat and keeps the C20-20FS-7 sealing properly in the blocked direction.
What port size does it use?
1-1/4 in (SAE-20) (Female SAE straight thread O-ring boss).
What pressure and flow is it rated for?
It is rated to 3000 psi.
What fluid conditions keep it running well?
Rated operating conditions: filtration 10 micron; fluid: Petroleum based, ISO VG32-68.
What is it made of?
The body is steel.
Related categories: Valves · Check Valves
Brand: Hyvair
