Swing Check Valve 6inch 1500lb Bolted Bonnet

JONLOO swing check valves are unidirectional valves preventing backflow of media. Other terms used for these valves are non-return valve or one-way check valve. Check valves work automatically so there is no need for a wheel or actuator. Consider a check valve when there is imminent damage due to backflow or to prevent contamination. That being said, there should be the right orientation of the lone inlet and outlet to ensure that the check valves are functioning properly.

Details
Size: NPS 1/2"~42"
Pressure Rating:Class 150lb-Class 2500lb
Body Material: carbon steel, stainless steel, alloy steel, etc
End connection: Flange end, Butt welded end
Working temperature:-196ºC~+560ºC
Operation: Lever, Gear, Pneumatic, hydraulic or Electric actuator optional.

Standards
Design and Manufacture:API 6D / BS 1868
Face to face: ASME B16.10
Flange ends: ASME B16.5
Butt Weld ends: ASME B16.25
Inspection and test: API 598 / API 6D

Features
Swing type disc;
Compact and reasonable product structure;
No need for human intervention;
Effectively prevents backflow;
Can be used as a backup system;
Reliable tightness and good performance;
Rapid closing and flexible actions of the valve disc;
Can be designed with a Damping Cylinder;
Smooth fluid passageway and small fluid resistance;
Small closing impact, water hammer is not liable to be generated.

Considerations When Buying Check Valves
The ideal check valve is the one that has a disc that can resist backflow pressure and prevent flow leakage. However, most choose check valves because of the size of the pipes as well as the largest Cv possible.

Many fail to understand the importance of disc performance since it is always used in the flow of the media. The material used for the disc is a priority. If there isn't enough flow in the valve, the disc tends to bear most of the damage.

1. Material Compatibility
Material has a great impact on the service life of JONLOO swing check valves. The material should be compatible with the type of fluid. Pressure from the fluid plays an important role in check valves. Therefore, the material should be strong enough to resist fluid pressure.

Additionally, corrosion is also dependent on temperature. That being said, the material should also resist high pressure and temperature if the conditions require it.

2. Flow Rate
The flow rate determines the pressure needed by the check valve to open or close it.

3. Operating Conditions
Factors such as the external and internal pressures, valve orientation, schedules of repair and maintenance affect the disk and the valve itself.

4. Pipe Size
The right fit to the pipe size is important since threaded check valves are important. With this in mind, knowing how this valve type should be installed is as important.

5. Maximum Pressure & Cracking Requirement
These types of valves are dependent on the cracking pressure to open it. The maximum pressure determines the amount of pressure the valve is able to handle at maximum.

6. Installation Requirement
Horizontal orientation is the most common one, but there are also vertically mounted valves in the market. Without the proper orientation during the installment, the valve would not work at all. Many check valve manufacturers include a valve symbol to make it easier to know the orientation during installation.