Hydraulic slow closing LLDPT Lined check valves

API 594 Retainerless Wafer Dual Plate Check Valves

YFL API 594 Retainerless wafer dual plate check valves without retainer are used to avoid backflow and then protect the equipments in the downstream.
  • Size:

    DN50-DN1500, 2''-60''
  • Pressure:

    PN10-PN160, 150lbs-2500lbs
  • Body:

    A105, LF2, F316, F51, F53, F44, Alloy 625, Monel, Bronze
  • Seat:

    SS410/SS316/+Stellite, VITON, BUNA, EPDM
  • Connection Ends:

    Wafer, Lug, double flange and hub end
  • Design standards:

    API 594, API6D, API 6A
  • Disc:

    CF8, CF8M, A890 Gr 4A, A890 Gr 5A, UNS S31254, UNS N26625
  • Spring:

    Inconel X-750
  • products details

YFL Retainerless wafer dual plate check valves are produced in various kinds of materials like carbon steel, low temperature steel, stainless steel, duplex stainless steel, monel, bronze and alloy steel to meet different working conditioins in different industries like Oil & Gas, petrochemical, power, paper and water tec.

YFL retainerless wafter dual plate check valves technical features:

1. Without retainer, without screwed body plug, without thread corrosion, without plug blow out risk;
2. High integrity, easy disassembly, convenient maintenance;
3. With slim plate design, imporved flow efficiency, higher flow coefficient (Cv value), lower pressure loss, lower energy cost;
4. Slim plate design decreases the weight and inertia of the the plate, and the friction between the plate and the hinge is also reduced to realize lower cracking pressure and faster response time.
5. Lower seat leakage rate than API standard, nearly zero leakage for metal to metal seal to repalce resilient seat when it is not suitable to use resilient seat duo to high temperature or abrasive medium etc.
6. Customized independent springs for dual discs in different valve sizes supply higher torque to reduce water hammer and extend the valve working life.

1.4571/F316Ti Wafer dual plate check valves, Duplex 4A dual plates check valves

YFL Lugged dual plate check valves, wafer dual plate check 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. " 

We open your business and close the problems.

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We cast brand and forge reputation by quality and service.

We focus on your satisfaction and our responsibility.

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