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Hydraulic slow closing LLDPT Lined check valves
Oil & Gas

Single Welding Seam Fully Welded Ball Valves

YFL Single Welding Seam Fully Welded Ball Valves have only one welding seam on the spherical body to avoid leakage from body.
  • Size:

    DN50-DN1400, 2''-56''
  • Pressure:

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

    A105, LF2, F304, F316
  • Face to Face:

    API 6D
  • Test:

    APII 598
  • Connection Ends:

    Flanged Ends, BW Ends
  • Design standards:

    API 6D
  • Leakage Class:

    Class VI
  • products details
YFL single welding seam fully welded ball valves are used in long distance transpotation pipelines for petroleum and natural gas with less maintenance.

YFL single welding seam fully welded ball valves features:


1. Spherical body with single welding seam is more compact and strong 
2. Bidirectional sealing when use double piston effect seat structure
3. Cavity pressure self relief when use single piston effect seat structure;
4. Fire safe, anti-static and anti-blowout stem design
5. Extended stem available for underground installation
6. Sleeve pipe welded to both BW ends available


Why Choose YFL?

1. Experienced in providing best solutions according to various sever working conditions to solve problems
2. Strict quality control from ceramic raw materials production, ceramic parts 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 create values for your projects.


fully welded single seam ball valves

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