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API 6D High Pressure Inverted Metal Seated Plug Valves

YFL API 6D High pressure inverted metal seated plug valves are used as on-off valve to fully open or fully close by 90 degree rotation under working temperature from -29℃ to 300℃.
  • Size:

    2''-32'', DN50-DN800
  • Pressure:

    150lbs-2500lbs, PN10-PN420
  • Body:

    WCB, LCB, LCC, CF8M,
  • Seat:

    SS410, SS316,
  • Face to Face:

    ASME B16.10
  • Test:

    API 598
  • Design standards:

    API 599, API 6D
  • Plug:

    A217 CA15/LCB/LCC/CF8M with Nitridation, WCB+ENP
  • products details

YFL API 599 inverted lubricated metal seated plug valves are widely used in industries of Petroleum, Chemical, Pharmaceutical, Fertilizer and Power to cut off the medium under working pressure from 150lbs to 2500lbs.

YFL pressure balanced inverted metal seal plug valves technical features:

1. Pressure balanced inverted structure, easy operation
2. Seal grease can be injected into the oil groove between body and sealing face to improve the sealing performance.
3. With metal seated and oil seal, it can be suitable for higher working temperature than  sofe seal plug valve.
4. The plug can be treated with nitridation or overlaid with hard alloy to increase the hardness for longer working life.



API 6D Pressure balanced inverted oil seal plug valves production


Pneumatic self-lubricated metal seated plug valves, duplex 4A inverted oil seal plug valves


2500lbs high pressure lubricated inverted oil seal plug valves


Why Choose YFL?

1. Experienced in providing best solutions according to various sever working conditions to solve problems
2. Strict quality control from raw materials, machining to pressure test and function test
3. Professional technical support and fast response trouble shooting
4. Approved & Registered vendor of Glencore & Umicore
5. Successful cases and reference list available
6. Customizable, Flexible,  Short delivery time



Testimonials from Glencore in Mining industry

"We are very happy with the results so far, and the valves seem to be top quality.
You must understand that this factory has some of the world's toughest conditions with regards to abrasive and corrosive solutions. We dissolve metals and most products and suppliers we tested in our applications failed. "  



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