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Hydraulic slow closing LLDPT Lined check valves
Oil & Gas

API 6D Al-bronze Axial Flow Check Valves

YFL Axial flow check valves are designed to be used widely in Oil & Gas long distance pipeline and installed in front of the pumps and compressors to avoid backflow.
  • Size:

    2''-36'', DN50-DN900
  • Pressure:

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

    WCB, CF8, Monel, Al-bronze, Duplex stainless steel
  • Seat:

    Metal seat, Soft seat Viton
  • Design standards:

    API 6D
  • Disc:

    WCB, CF8, Monel, Al-bronze, Duplex stainless steel
  • Medium:

    Water, Oil and Gas
  • Spring:

    Inconel X-750, Inconel 718
  • products details

YFL Axial flow check valves are used to protect the Oil & Gas long distance pipeline equipments, oil transfer pump and compressors in large scale ethylene unit from damage caused by backflow.

YFL Axial flow check valve is mainly composed by body, disc, spring and diffuser. Thanks to the spring in axial flow check valve, the noise and vibration are reduced when the disc is closed, and the water hammer is also minimized to protect the pipeline and equipments. 


The pre-pressed spring has sensitive response to small pressure difference, so the axial flow check valve can close the disc more quickly and solve the sealing problems which happen in conventional check valve when the back pressure is low. The spring is in material of Inconel X-750 which has excellent corrosion resistance, antioxidation and mechanical performance to ensure long working life and stable working performance.


Al-bronze axial flow check valves constructure


The body, disc and diffuser are designed to be streamline flow passageway to reduce the flow resistance and pressure loss , so that the axial flow check valves have excellent flow rate performance. 


There are primary metal seal and disc sealing ring in material of Viton as secondary soft seal for axial flow check valve to ensure fire safe and zero leakage. The sealing faces are overlaid with hard alloy steel to be wear resistant and anti-corrosive with long service life.


Axial flow check valves production


 The axial flow check valve can be installed horizontally or vertically with compact structure and easy installation.


Axial flow check valves for pumps and compressors


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 create values for your projects.

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