Resilient Seated Flanged Ends Swing Check Valve

Size: 2″-12”(DN50-DN300)
Material: Ductile iron ASTM A536, 65-45-12
Dimension: AWWA C606
Connection:AWWA C606-2006 Grooved and Shouldered Joints
Pressure Rating: 175PSI, 200PSI, 250PSI, 300PSI
Temperature: 0-80 ℃
Surface Treatment: ANSI/AWWA C550
Certificate: UL Listed / FM Approved
Medium: Water, gas etc.

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Product Description

Products Details

What is the Flanged swing check valve?

Flanged swing check valve is swing type check valve (non-return valve) with flanged connection. It is used to allow water to flow through it in only one direction, and the disc swings off the seat to permit forward flow, or swing on the seat to block reverse flow.The swing check valve is a kind of check valve that the valve flap opens and closes with the upward rotation of the rocker arm, which can automatically prevent the backflow of the fluid. The disc of the check valve swings upward under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side. When the pressure on the inlet side is lower than that on the outlet side, the valve disc will automatically close under the action of fluid pressure difference, gravity and other factors to prevent the fluid from flowing back.

Product Drawing

Part No. Part Standard   Specification Options
1 Valve Body ASTM A536,   65-45-12
2 Bonnet ASTM A536,   65-45-12
3 Eye Bolt Carbon Steel   Zinc Plated
5 Hinge Pin AISI 304
6 Hinge Bushing Brass ASTM B16   C36000/Hpb63-3
7 Seat Ring Bronze ASTM B62 AISI 304, AISI   316 Pressed Fit or Threaded
C83600/ZQSn5-5-5(Pressed   Fit)
8 Disc Seat Bolt AISI 304
9 Retainer Washer Bronze ASTM B62   C83600/ZQSn5-5-5
10 Disc Sealing   Ring EPDM AISI 304, AISI   316, Bronze ASTM B62
11 Disc ASTM A536,   65-45-12
12 Clapper Arm ASTM A536,   65-45-12
13 Stud Bushing Brass ASTM B16   C36000/Hpb63-3
14 O-Ring NBR EPDM
15 Nut AISI 304 AISI 316


DN Dimensions(mm)
Inch mm L D D1 b n- Φd H
Standard Optional
2″ 50 203 203 152 120.5 16 4- Φ19.1 133
2.5″ 65 254 216 178 139.5 17.5 4- Φ19.1 150
3″ 80 278 241 191 152.5 19 4- Φ19.1 150
4″ 100 330 292 229 190.5 24 8- Φ19.1 218
6″ 150 406 356 279 241.5 25.5 8- Φ22.2 290
8″ 200 495 495 343 298.5 28.5 8- Φ22.2 330
10″ 250 622 622 406 362 30.5 12- Φ25.4 350
12″ 300 660 698 483 432 32 12- Φ25.4 376


Quality Control

Advanced equipment guarantee the production of high quality products.
Advantages of DISA moulding line:1. High quality precise casting less scrap and lower finishing costs. 2.High Production Efficiency(1)Fast production: 350 moulds per hour, pattern changing time cut down to 2-3 minutes
(2).higher profitability over a longer service life. 3. Safety and Environmental Friendly safe, easy and clean operation (CE and ISO 14001 compliant)
High-precision, hydraulicly driven mould transport,no shifting, distortion, ordisplacement of moulds.
The advantage of the sand supply system:The sand supply system is from the best class sand processing equipment manufacturers of China, with straight structure, easier maintenance, environmently friendly, high degree of automation, high safety factor, good parameters of sand stability.

Fluid Tech is honored as the National enterprise technical center and is capable and qualified to conduct full series of tests and inspections including chemical checking, etc. Inspection facilities include:spectrometer, carbon sulfur analyzer, metallurgical microscope, tensile strength testing equipment, pressure testing equipment, adhesive force testing equipment, CMM, hardness tester, etc.From incoming inspection to finished product, quality is checked and monitored in the whole process. Each step of the manufacturing process is carefully documented, regularly reviewed for revision control and updating standard. Quality procedures are constantly monitored and updated to assure that only the highestand most consistent quality products are supplied to our valued customers.

Application and Case

Resilient Seated Flanged Ends Swing Check Valve are used in fire protection system, plumbing, gas system, irrigation system, etc.Fire Protection Check Valves are used in many projects , such as China Taiwanese Building 101, Xiamen Building,Wuhan Expo Building and other famous landmark projects.