National Oilwell Varco's Shaffer® gate valves provide a wide range of choices in application style, trim, working pressure, and bore sizes. Three basic models of Shaffer® gate valves are offered- Type B, Type DB, and Type HB. National Oilwell Varco's line of Shaffer® gate valves have been manufactured since the 1920's. ...

NOV's Valve Division manufactures top of the line Reset Relief Valves, Shear Relief Valves, Float Valves, and Gate Valves for the oil and gas industry. These product lines protect drilling equipment ...

NOV ANSON manifolds are designed and supplied fully certified in accordance with the recognized oilfield equipment standards.

A full range from 2" to 6" suitable for pressures up to 20,000psi...

Designed and built to withstand the harshest oilfield operating conditions, M/D Totco's Pressure Monitoring Systems are available in configurations to suit virtually any situation. From sensing chang...

Blowout Preventers (BOPs) are safety devices used to "prevent" the uncontrolled flow of liquids and gases during well drilling operations. Blowout preventers are large, high-pressure valves that are ...