Plug valves have quarter turn operation and are lubricated or non-lubricated.
Lubricant is injected under pressure between the plug face and body seat to reduce friction, provide port sealing, and permit sealant jacking action to unseat the plug in tapered designs.
Non-lubricated type incorporate mechanical design features to reduce friction between the plug face and body seat during operation by lifting the plug, or, in the split plug type valve, by withdrawing the plug halves from the seat prior to rotation. Alternatively, PTFE linings or sleeves are used. Both types are available in parallel and tapered versions.
Sleeved Plug valves are usually of the tapered design and incorporate a polymeric sleeve, usually PTFE, in the body.
|Valve Design||Lubricated or Non-Lubricated|
|Construction||Round Opening Regular Venturi Short|
|Trim Design||Tapered or Parallel|
|Size||½" - 28"|
|Pressure Range||150# - 600#|
|Bore||Conventional or Reduced|
Conform To NACE MR 01-75
|Seats||Metal or Resilient|
|Seals||PTFE - Graphite|
|Testing||API 598 - API 6D|
|Operator||Wrench, Gear, Actuated|