Swing Check Valve

We are offering swing check valve. "product type: check valve product name:flage swing check valve product details: place of origin: china certification: iso9001-ce standard features durable metal-to-metal seats thermal expansion relief available in 25 or 50 psi settings 200 psi cold non-shock pressure limit 150# raised face flange connections construction details: body and cap: ductile iron internal components: ductile and stainless steel gasket: teflon expansion valve: stainless steel and viton