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Short Description:

 Sleeved Plug Valve

Nominal Size Range: NPS 1/2” ~ 14”

Pressure Rating: Class 150LB ~ 900LB

Connection: Flange (RF, FF, RTJ), Butt Welded (BW), Socket Welded (SW)

Design: API 599, API 6D

Flange design: ASME B16.5

Butt welding design: ASME B16.25

NORTECH is one of the leading China Sleeved Plug Valve  Manufacturer & Supplier.


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What is Sleeved Plug Valve ?

  Sleeved Plug Valve consists of a cavity in the middle of plug along its axis. This cavity is closed at the bottom and fitted with a sealant-injection fitting at the top. The sealant is injected into the cavity, and a check valve below the injection fitting prevents the sealant from flowing in the reverse direction. The sealant oozes out from the center cavity through radial holes into lubricant grooves that extend along the length of the seating surface of the plug.

In order to reduce the torque of conventional metal seat lubricated plug valves, Sleeved Plug Valve are invented and widely used. In addition to the characteristics of conventional oil ubricated plug valves, the pressure balanced plug valves also have the following characteristics:

  • 1.The plug cone of the pressure balanced lubricated plug valve is mounted in an inverted position. There is a check valve on the upper part of the plug cone. When the valve is closed, due to the difference in the upper and lower cut area of the plug cone, the injected high-pressure sealing oil causes the plug body to be lifted upwardly, so that the plug body and the valve sealing surface can be better sealed.

Main features of Sleeved Plug Valve

Features and benefits of   Sleeved Plug Valve

  • 1.It has structural of flip-clip balanceable pressure and light on/off operation.
  • 2.An oil groove is set between valve body and seal surface, which may infuse the seal grease to increase the seal capability.
  • 3.The materials of the parts and sizes of flanges can be reasonably configured according the actual operation condition of the requirements of the customers,so as to meet the various needs of engineering.

Technical specifications of Sleeved Plug Valve

Specifications of  Sleeved Plug Valve.

Design and manufacture API 599, API 6D
Nominal Size NPS 1/2” ~ 24”
Pressure Rating Class 150LB ~ 1500LB
End connection Flange (RF, FF, RTJ), Butt Welded (BW), Socket Welded (SW)
Pressure-temperature rating ASME B16.34
Face-to-face dimensions ASME B16.10
Flange dimension ASME B16.5
Butt welding ASME B16.25

Applications of Sleeved Plug Valve

  Sleeved Plug Valve is widely used in various industries such as petroleum, chemical industry, pharmacy, chemical fertilizer, power industry etc. It is used under nominal pressure of CLASS150-1500LBS, and works at the temperature of -40~450° C,Water,Gas,Steam and Oil etc.


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