Watts 1/8 in. Automatic Vent Valve HIGH SPEED STEEL BITS Rated at maximum 229 psi

Rated at maximum 229 psi at 400°F

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Watts 1/8 in. Automatic Vent Valve HIGH SPEED STEEL BITS Rated at maximum 229 psiSeries FV 4 automatic vent valves are used in commercial and residential hydronic heating applications to provide automatic air venting for hot or cold water distribution systems. It consists of a brass body construction with male NPT connection, brass cover, air vent with silicone rubber seal, polyethylene float with valve plug and automatic vent. Series FV 4M1 has a high temperature rating and is ideal for use with glycol systems or for use as an