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Hydraulic slow closing LLDPT Lined check valves
Oil & Gas

Buried Underground Extended Stem Fully Welded Ball Valves

YFL Buried type extended stem fully welded ball valves are widely installed underground in long distance pipeline for transportation of petroleum and natural gas.
  • Size:

    2''-48'', DN50-DN1200
  • Pressure:

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

    A105, LFE2, F304, F316
  • Seat:

    PTFE, RPTFE, NYLON, DEVLON, Metal Seated
  • Operation:

    Manual, Elecltric, Pneumatic, Gas over oil, Electro-hydraulic
  • Test:

    ISO 5208, API 598, API 6D
  • Connection Ends:

    ASME B16.25, EN 12627
  • Design standards:

    API 6D/ISO 14313
  • products details

YFL Buried type fully welded ball valves are designed with fully welded forged body and extended stem for convenient operation above ground. The grease injection valve, drain valve and other components are also extended to the top of the valve so that they can be operated above ground conveniently.

YFL buried type fully welded ball valves technical features:


1. Fully welded forged body without leakage point: A105, LF2, F11, F22, F304, F316, F316L and F51 to suit different working temperature and corrosive medium.
2. Sealing ring: PTFE, RPTFE, NYLON, DEVLON, PEEK to suit different working pressure and working temperature.
3. Short pipes welded both ends are available upon request
4. Extended stem for underground installation
5. Fire safe, anti-static, anti-blow out stem
6. Trunnion mounted ball, double block and bleed


Buried underground extended stem fully welded ball valves


Extended stem buried underground fully welded ball 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. "  


YFL for 誉丰利 means benefiting from reputation.

We cast brand and forge reputation by quality and service.

We focus on your satisfaction and our responsibility.

Let‘s solve problems and improve process for your projects.

For more solutions, please visit www.YFLvalve.com and contact YFL at sales@YFLvalve.com.

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