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$47.53
The Hyvair CMM375S is an inline check valve from the CMM series, threaded 3/8 in male NPT on both ends. It allows flow in one direction and stops backflow in the other. The male threads go straight into female ports or fittings, so the valve installs in the line without extra adapters.
Construction starts with a body machined from 12L14 steel. A stainless steel ball and stainless steel spring sit behind a steel retainer, and sealing is metal-to-metal. The valve handles working pressure up to 3000 psi (210 bar) across a temperature range of -20 °F to 400 °F.
Cracking pressure is a low 3 psi. Very little inlet pressure is needed to unseat the ball, so forward flow passes with minimal pressure drop. When flow reverses, the spring returns the ball to its seat and the valve closes. With a flow coefficient of 0.8 Cv, the CMM375S offers higher flow capacity for its 3/8 in size.
The exterior is zinc plated and sealed with clear chromate. That two-layer finish resists corrosion and supports long service life in demanding environments. Specify the CMM375S when a 3/8 in NPT line needs a low cracking check rated to 3000 psi.
