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Check Valves (High Pressure Swing)



Size Range: 

2"~24"(DN50~DN600), Class 900~2500(PN160~PN420)

Features: 

A type of check valve that is specifically designed for high-pressure applic-ations. It is a one-way valve that allows for the flow of fluid in one direction while preventing backflow in the opposite direction.

Connection: 

Butt Weld, Socket Weld, Threaded, Fanged, Clamp

Materials: 

Carbon Steel, Stainless Steel, Alloy Steel, Low Temperature Steel, Duplex stainless steel, Copper Alloys etc.

Standards: 

ANSI , GOST , DIN , JIS , BS , UNI , GB

Certificates: 

ISO , API , CE

Application: 

Chemical , Petrochemical , Oil and Gas , Power Generation , Water and Wastewater ect.


Product Specifications
Specifications
FAQ
Video

Check Valves (High Pressure Swing)


The check valves (high pressure swing) is a widely used non-return valve.It designed to allow fluid flow in one direction while preventing backflow automatically.Unlike gate or globe valves,it operates without external actuation.Under reverse flow conditions,It relies on the swinging disc mechanism that opens under forward flow and closes tightly.

Its unobstructed bore provides smooth flow with minimal pressure drop.It's suitable for high pressure pipelines.It's critical for flow efficiency and reliability.The swing design enables secure sealing against backflow while allowing full bore flow when open. As we know that commonly applied in oil & gas,petrochemical and power generation industries.The high pressure swing check valves ensure long lasting protection for pumps, compressors and process equipment.

For demanding services,these valves can be manufactured with bolted covers,renewable seats and pressure sealed bonnets.They are good for enhanced durability.Under severe mechanical and thermal stress conditions,they are a cost effective solution for systems that require automatic backflow prevention.

They have forged steel,stainless steel and alloy steel options.They conform to ANSI, API, and ASME standards.They include pressure classes such as 600#,900#,1500# and higher.As we know that whether for pipeline safety,refinery operations or high pressure process lines,they deliver reliable performance,automatic operation and robust protection in critical service applications.




Product application

Due to powerful comprehensive performance and wide practicality for flange products,they have been applied in many engineering fields.The application areas include light and heavy industry, petrochemicals, offshore oil, shipbuilding, drainage, water supply, construction, pipelines, fire protection, power, aerospace.


Service consultation

During the communication,our technicians will answer all the questions what your concerns.For more details,please feel free to contact us.Thanks for your attention.


Email: info@haihao-pipe.com

MB: +86-18928171006

Contact Person: Mrs. Shallen Feng



①  What are check valves (high pressure swing) and how do they work?

They are a type of valve that allows fluid to flow in only one direction and automatically prevents backflow.It is designed with a swinging disc that opens. when fluid flows forward and closes tightly when the flow reverses.The disc swings freely on a hinge, making the valve simple and reliable in operation.Because of this design,they are commonly used in pipelines, pumps and process systems. The backflow could damage equipment or interrupt operation. They are especially suitable for high pressure applications.They ensure dependable sealing and long service life.


②  What is the important advantage of using check valves (high pressure swing)?

The high pressure swing check valve offers several key advantages.They are a reliable choice for critical piping systems.Its automatic operation prevents backflow. They don't need the external controls.They ensure dependable protection for pumps and equipment. The swing disc design allows quick response to flow reversal.They reduce the risk of system damage.In addition, compared to more complex valve types, the simple construction enables easy installation and low maintenance. As we know that high pressure swing check valves are built to handle demanding pressure and temperature conditions.They deliver long service life and durability. They are also cost effective.Because in high pressure applications,their robust design reduces downtime and replacement needs.


③  In which applications is check valves (high pressure swing) suitable?

High pressure swing check valves are best suited for applications.Under high pressure,preventing reverse flow is critical and the system operates.They are commonly used in oil and gas pipelines, petrochemical plants, power generation systems and water treatment facilities.As we know that pumps, compressors or turbines needs protection from potential backflow that could cause damage. They are a reliable choice.These valves are especially recommended in continuous flow systems.As we know that automatic operation and minimal maintenance are important.Under severe pressure and temperature conditions,for projects requiring durability, high pressure swing check valves provide a cost effective and dependable solution.


④  When are check valves (high pressure swing) not the good choice for my project?

They are not the good choice for applications where precise flow control or throttling is required.Their design only allows flow in one direction and can't regulate volume.They are unsuitable in systems with very low flow rates.Because the swinging disc doesn't fully open or close properly, leading to vibration or wear.In addition, they aren't recommended for installations where space is limited or rapid cycling occurs.Because the swinging disc requires clearance and may suffer from frequent impact.For projects demanding absolute tight shut off against reverse flow or where silent operation is necessary.As we know that alternative check valve designs such as lift check valves or non-slam check valves are a better option.


⑤  What are the steps to install check valves (high pressure swing)?

To install check valves (high pressure swing), first ensure the pipeline is depressurized and free of debris.Verify the valve’s flow direction matches the system.Then position it between the pipe flanges without forcing it. We should align the bolt holes, insert the bolts and tighten them gradually in a cross pattern.We should ensure an even seal. We should check that the valve swings freely and is properly secured. We need to slowly pressurize the system.Finally,we should confirm there are no leaks and that the valve operates correctly.


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