The JOHN cast iron swing check valves are designed to give genuine full-bore flow on lines carrying liquids that are non-injurious to the specified materials. They operate equally well in either horizontal or vertical installations. In service, the valve disc swings away from the seat on a hinge and returns quickly and accurately to the closed position immediately flow ceases or attempts to reverse.
- Capable of temperatures up to 120ºC
- Available in larger sizes upon request.
- It is recommended that valves are installed a minimum of 8-10 pipe diameters from the pump.
- It is good engineering practice to fit a counterweight to valves incorporating an extended hinge pin
- Available in other materials and trims
OPTIONAL EXTRAS
- Flanged AS 2129 Table F Undrilled, can be drilled to table C,D,E, F or ANSI
- Extended hinge pin
- Counterweight
- Open/shut indicator
- Remote position indication
- No-flow limit switch
- Fusion bonded epoxy coating
- Special paint finish
