Doğrulanmış işletme lisanslarına sahip tedarikçiler
Denetlenen Tedarikçi ANSI Lift Check Valve
Check valves serve to prevent the backflow of medium flow in the piping system, widely applied in the field of potable water, water supply and drainage, sewage disposal, irrigation, air conditioning, fire protection as well as chemical and energy industry.
Check valves are mechanical valves that allow flow in one direction and prevent backflow in the opposite direction. There are several types of check valves, each designed for specific applications and operating conditions. Some common types of check valves include:
1. Swing check valve: This type of check valve has a hinged disc that swings open to allow flow in one direction and closes to prevent backflow.
2. Lift check valve: Lift check valves have a disc that moves up and down to allow or prevent flow in one direction.
3. Ball check valve: Ball check valves use a ball or sphere to control flow, allowing the ball to move freely to open or close the valve.
4. Dual plate check valve: This type of check valve has two plates that open and close in response to flow, providing a tight seal to prevent backflow.
5. Wafer check valve: Wafer check valves are designed to fit between flanges and provide a compact and lightweight solution for preventing backflow.
There are various standards that govern the design, construction, and performance of check valves, including:
1. API 594: Standard for check valves for the petroleum and natural gas industry.
2. API 6D: Specification for pipeline valves, including check valves, used in the oil and gas industry.
3. ANSI/ASME B16.34: Standard for valves, flanges, fittings, and gaskets used in piping systems.
4. MSS SP-71: Standard for swing check valves for waterworks service.
5. ASTM F467: Standard specification for socket weld and threaded check valves.
It is important to select a check valve that meets the specific requirements of the application and complies with industry standards to ensure safe and reliable operation.
| Part Name | Material | Option |
| Body & Bonnet | Ductile iron /WCB/ CAST STEEL | |
| Hinge Pin | SS420 | SS304.SS3016.SS416.SS431 |
| Disc | Ductile iron /WCB/ CAST STEEL | |
| Seat Ring | EPDM | |
| Bolt & Nut | Carbon steel zinc plated | SS304.SS316 |
| Bonnet Gasket | PTFE |
1. One year warranty
2. Spare parts provided such as extra gaskets
3. Strict market agent protection agreement if you want to be distributor
4. OEM&ODM are welcome, customer logo can be casted on to valve body if you need
5. First order and large order have a good discount.
6. Always most competitive price, most reliable quality and best service as your biggest support.
Qingdao Fluido Industrial Co.,Ltd is one the biggest manufacturers and exports of valves products in China. We are specilized in producing variety of gate valves, butterfly valves, ball valves, globe valves, check valves, strainers etc in different materials.
Our factory and company are certified to the international ISO-9001 qualtity system standard and all products are carefully tested to meet strict quality requirments and industry standards prior to each shipment.
Doğrulanmış işletme lisanslarına sahip tedarikçiler
Denetlenen Tedarikçi 
