Plug Valve
A quarter-turn valve using a tapered or cylindrical plug with a through-bore as the obturator. Types: lubricated (sealant injected to reduce friction, used in dirty gas and oil service) and non-lubricated (PTFE-sleeved, clean service). Also eccentric plug type for slurry/sewage.
Related Terms
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Applicable Standards
Specification for Pipeline and Piping Valves
API 6D is the most widely cited standard for pipeline and piping valves in the oil and gas industry.
Metal Plug Valves - Flanged, Threaded and Welding End
API 599 specifies requirements for metal plug valves with flanged, threaded, and welding end connections, in sizes NPS ½" to NPS 24" for Class 150 to 600.
Frequently Asked Questions
What is a Plug Valve?
A quarter-turn valve using a tapered or cylindrical plug with a through-bore as the obturator. Types: lubricated (sealant injected to reduce friction, used in dirty gas and oil service) and non-lubricated (PTFE-sleeved, clean service). Also eccentric plug type for slurry/sewage.
What is a Plug Valve used for?
Plug Valves are used in industrial piping systems for on-off isolation, flow control, or backflow prevention depending on the valve type. They are selected based on the process fluid, operating pressure and temperature, required shutoff class, and pipeline size. Vajra Industrial Solutions supplies Plug Valves certified to API 6D, ASME B16.34, and other applicable standards.
How do I select the right Plug Valve for my application?
Selecting the correct Plug Valve requires specifying: (1) nominal pipe size (NPS/DN), (2) pressure class per ASME B16.34, (3) body and trim material based on fluid compatibility and temperature, (4) end connections (flanged RF/RTJ, butt-weld, socket-weld, or threaded), (5) required certifications (API 6D, ISO 9001, fire-safe API 607). Contact Vajra Industrial Solutions at sales@vajravyuh.com with your specifications for a quote.
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