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Inverted Pressure Balanced Lubricated Plug Valve Design

Inverted Pressure Balanced Lubricated Plug Valve

Product Catalouge

An inverted pressure-balanced lubricated plug valve is a type of valve used to control fluid flow through a pipeline. It is an enhanced version of the standard lubricated plug valve, designed to provide better performance and reliability.

Inverted type plug valves are commonly used in industries such as oil and gas, chemical, and petrochemical due to their ability to handle various temperatures and pressures. They are also suitable for applications requiring a tight seal, as they have a tight shut-off capability.

  • It has logical structure, reliable seal and excellent performance
  • It has the structure of flip-chip balance able pressure and light on/off operation
  • An oil groove is set between valve body and seal surface, which may infuse the seal grease to increase the seal capability
  • The part material and flange dimension may be selected according to current operating condition and users requirement, so that it meets the requirements of various engineering


Design Standard : API 6D / API 599
Pressure/Temperature Chart : ASME B16.34
Face to face Dimension : API 6D / ASME B16.10
Testing Standard : API 6D / API 598
Flange Details : ASME B16.5 UP TO 24”ASME B16.47 ABOVE 24”
Fire Testing : API 6FA
Visual Inspection : MSS SP – 55
Materials : WCB / LCB / LCC / CF8M / CF8 / CF3M
Trims : F6A / F316 / F304 / F316L / F51 /
Seats : Metallic
Ends : Flanged / Butt-weld End


Valve Type Class Rating Size Range
Plug 150# 2″ to 24″
Plug 300# 2″ to 24″
Plug 600# 2″ to 18″
Plug 900# 2″ to 16″
Plug 1500# 2″ to 12″
Plug 2500# 2″ to 8″

Inverted Type Plug Valve

Pressure Balancing Screwed Plug Valve
Pressure Balancing Screwed Plug Valve
Pressure Balancing Plug Valve

Pressure Balancing Plug Valve

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