Non-return Valve

Non-return valves are used to reduce back pressure when pumping water through the drill string, or behind a rock bit.

Our Non-return Valves have a minimum number of parts to give long and trouble-free service life.

The valve section is manufactured entirely from brass to resist corrosion and normally the only service required is occasional replacement of the O-rin seal and spring.

Top and bottom adaptors are supplied to customer requirements in any combination listed below.