Petrovalve United States

Ball valves are quarter-turn rotational motion valves that use a ball-shaped control element to stop or start flow. Ball valves are manufactured in different configurations, most commonly floating ball and trunnion-mounted ball valves.

Cast iron usually refers to grey iron; iron accounts for more than 95% by weight of the alloy material, while the main alloying elements are carbon and silicon. With its low melting point, good fluidity, cast-ability, excellent machinability, resistance to deformation and wear resistance, cast irons became an engineering material with a wide range of applications.

Check valves are self-operated valves that open with forward flow and close with reverse flow. The pressure of the fluid passing through a system opens the valve, while any reversal of flow will close the valve. Exact operation will vary depending on the type of check valve mechanism. Common check valve types include swing, tilting-disk, piston, ball and butterfly valves.

Plug valves are quarter-turn rotational motion valves that use a tapered plug to stop or start flow. They typically have a rectangular port shape and come in either non-lubricated (also called self-lubricated) or lubricated designs. Plug valves can be used in many types of fluid services and perform well in slurry applications.

Bronze is a metal alloy consisting primarily of copper. Bronze only oxidizes superficially creating a copper oxide layer. Once this layer is formed, the underlying metal is protected from further corrosion. Bronze is known for its toughness and its resistance to corrosion.

Globe valves are a linear motion valve primarily designed to stop, start and regulate flow. The disk of a globe valve can be totally removed from the flowpath, or can completely close the flowpath. Conventional globe valves may be used for isolation and pressure-reducing services, and come in three primary body designs: Tee Pattern or Z-body, Wye Pattern or Y-body, and Angle Pattern.