Double Door Wafer Check Valve

Size: 2″-16”(DN50-DN400)
Material: Ductile iron ASTM A536, 65-45-12
Design Standard: API 594, JB/T 8937
Connection:BS EN 1092-2 PN10/16/25, ASME B16.42 CLASS 150, AS 2129 TABLE E, JISB221210K, BS10 TABLE D/E
Pressure Rating: 175PSI, 200PSI, 250PSI, 300PSI, PN10, PN16
Temperature: 0-80 ℃
Surface Treatment: ANSI/AWWA C550
Medium: Water, gas etc.

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Product Description

Products Details

Overview of Double Door Wafer Check Valve?

The wafer check valve produced by our factory is composed of valve body, valve disc, valve stem and spring and other parts, and adopts wafer connection. Water hammer is significantly reduced due to the short closing stroke of the disc and it is spring loaded. The valve is mainly suitable for urban, industrial and high-rise building water supply and drainage network. Because its structural length is shorter than that of general check valves, it is most suitable for places with limited installation space.

Product Drawing

No. Part Standard Specification Options
1 Valve Body ASTM A53665-45-12
2 Disc AISI 316 AISI304/C95400/ASTM A53665-45-12
3 Washer PTFE
4 Stem AISI 420 AISI 304/AISI 316/AISI 416
5 Rubber Seat EPDM NBR


DN Dimensions(mm)
inch MM L D D1 D2
2″ 50 54 106 68 46
21/2″ 65 60 127 78 60
3″ 80 57 134 102 70
4″ 100 67 162 117 84
5″ 125 83 194 145 115
6″ 150 95 218 170 134
8″ 200 127 276.8 226 184
10″ 250 140 335.5 265 220
12″ 300 181 405.5 310 260
14″ 350 184 447.4 360 302
16″ 400 191 505 410 350

Features of Rubber Disc Swing Check Valve

1) Small size, light weight, compact structure and easy maintenance.
2) The valve plate adopts a dual type, which can be quickly closed by itself under the elastic moment of the spring.
3) Due to the quick closing effect, the backflow of the medium can be prevented.
4) The valve body structure has small length and dimension, good rigidity, safety and reliability.
5) To achieve complete sealing, the leakage of hydraulic test is zero.
6) Easy to install, can be used for horizontal and vertical installation.

Malleable Iron SCC Short Compression Coupling NPT Thread

Application and Case

Products are used in fire protection system, water system, HVAC system, plumbing, gas system, irrigation system, etc.These products are used in many projects , such as China Taiwanese Building 101, Xiamen Building,Wuhan Expo Building and other famous landmark projects.


1. What is the minimum quantity of the order?
Answer: The purchase volume of mixed products is 4 tons

2. How long is the delivery time of the order?
Answer: The delivery time for general orders is about 30 days. If the order is urgent and we have stock, around 7 days.

3. What payment methods do you accept?
Answer: We accept payment terms such as TT, L/C, DP, Western Union, Paypal, etc.

4. Where is your departure port of shipment? Is it possible to deliver to the designated warehouse?
Answer: The port of departure of our goods is generally Tianjin Port or Qingdao Port. We can transport the goods to designated warehouses, such as Yiwu, Guangzhou, etc.

5. What certificates do your products have?
Answer: Our products have FM/UL certificates, and we cooperate with third-party quality inspection certification before the factory, such as SGS,TUV

6.What are the series of your products?
Answer: Our products are divided into heavy series, medium series and light series according to different markets and standards. In order to buy more competitive products for you, please communicate your purchasing needs with the salesperson.

7. Do product packaging cartons and labels support customization?
Answer: Packaging cartons and labels can be customized according to customer requirements.

8.Does the purchased product support customization?
Answer: The product supports customization, but there are purchase quantity requirements and mold costs. For details, please consult the salesperson.

9.What are the packaging methods of the product?
Answer: The packaging of the product includes carton packaging, pallet packaging, wooden box packaging, and woven bag packaging.