Double Door Grooved Check Valve

Size: 6″-14”(DN150-DN350)
Material: Ductile iron ASTM A536, 65-45-12
Design Standard: ISO 6182, AWWA C606, MSS SP-67
Connection:ISO 6182, AWWA C606, MSS SP-67
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 Groove Check Valve?

The double door check valve is a one-way check valve. When the medium is flowing forward, the valve flap is opened under the pressure of the fluid; when the medium flows in the opposite direction, the valve flap is closed under the spring force and the reverse fluid pressure. Cut the channel to prevent backflow. It can be connected by grooved fittings.

Product Drawing

No. Part Standard Specification Options
1 Countersunk Hex Head Screws Carbon Steel Zinc Plated
2 Seal Ring EPDM
3 Gasket PTFE
4 Shaft SS420 SS304,SS316,SS431
5 Gasket PTFE
6 Spring SS304
7 Disc SS304 SS316,EN-GJS-450-10
8 Body EN-GJS-450-10
9 Eye Bolt Carbon Steel Zinc Plated


DN Dimensions(mm)
inch MM A B C D E F L
6″ 159 15.9 9.5 152.75 159 142 120
8″ 219.1 19.1 11.1 214.4 219 200 165 160
10″ 273 19.1 12.7 268.28 273 253 203 180
12″ 323.9 19.1 12.7 318.29 324 307 228 180
14″ 377 23.8 12.7 371.1 377 354 258 200

Features of Double Door Groove Check Valve

Grooved Ends: The ends of the valve body are equipped with grooves that match the grooves on the pipe ends. This design enables the valve to be connected to the piping system using mechanical couplings, typically made of ductile iron or stainless steel.
Quick Installation: The grooved-end design simplifies the installation process, as it eliminates the need for complex welding procedures. This can result in significant time and labor savings during construction or maintenance activities.
Reliability: These valves are engineered to provide reliable performance and long service life, with minimal maintenance requirements. The grooved-end connection ensures a secure and leak-tight seal between the valve and the piping system.

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.