Various Types of Check Valves for Effective Flow Control

2023-04-28 18:52:32 By : admin
article on the importance of check valves in industries.

Check valves are an essential component in different industries, including petroleum, chemical, and marine, among others. These valves are responsible for regulating the flow of fluids, gases, and other substances, ensuring that they flow in a single direction. In short, check valves are known as non-return or one-way valves, meaning they prevent the backflow of substances into a pipeline.
Check Valve in Wafer Type, Disc Check Valve, Swing Check Valve

Check Valve Types

Check valves come in different types, and each type has unique features that make it suitable for different applications. Some of the common check valves include:

Wafer Check Valves
This type of check valve is ideal for applications that require compact construction. They operate by opening automatically when fluid flow moves forward and closing immediately when fluids backflow.

Disc Check Valves
Disc check valves, also known as lift check valves, have a disc that lifts from the valve seat to allow the flow of fluids in one direction. If backflow occurs, the disc falls back against the seat and prevents the flow.

Dual Plate Check Valves
Dual plate check valves are similar to disc check valves, but they come with two plates that hinge in the center. They function in the same way as disc check valves, but they offer a higher closing force, making them suitable for high-pressure applications.

Swing Type Non Return Valves
Swing check valves, also known as tilting disc check valves, have a swinging disc that opens naturally in the forward fluid flow direction. When there is backflow, the disc swings back to the valve seat and blocks the flow.

Forged Steel Check Valves
Forged steel check valves are ideal for applications that require high pressure and temperature. They are made of forged steel, making them robust enough to withstand harsh industrial environments.

Importance of Check Valves in Industries

Check valves play a critical role in various industries, including petroleum, chemical, marine, and many others. Here are some reasons why check valves are essential in these industries:

Preventing Backflow and Contamination
Industrial processes require the flow of fluids, gases, and other substances in one direction. If there is a backflow, it can contaminate the system and cause damage to equipment. Check valves prevent backflow and contamination by allowing fluid flow in one direction and blocking backflow.

Protecting Equipment and Personnel
Backflow can cause severe damage to equipment and result in costly repairs. It can also put personnel in those industries at risk. For example, if there is backflow of harmful substances such as chemicals or gases, it can cause explosions, fires or chemical spills. Check valves protect equipment and personnel by ensuring that fluid flow is unidirectional, reducing the risk of accidents.

Maintaining System Efficiency
System efficiency is critical in industries such as petroleum, chemical, and marine. The backflow of fluids can cause blockages and reduce the efficiency of the system, leading to machinery failure and increased maintenance costs. Check valves maintain system efficiency by allowing fluids to flow in one direction and preventing fluid backflow, ensuring that the system operates with optimal efficiency.

Ensuring Regulatory Compliance
Industries such as petroleum, chemical, and marine operate in highly regulated environments. Check valves are vital components in ensuring regulatory compliance. For example, in the energy sector, the installation of check valves is mandatory to comply with safety regulations.

DIDLINK GROUP's Check Valves

DIDLINK GROUP is a professional manufacturer of check valves such as wafer check valves, disc check valves, dual plate check valves, swing type non-return valves, and forged steel check valves, among others. The company has been in operation for over two decades, delivering unparalleled value and quality to its customers.

DIDLINK GROUP's check valves are designed to withstand harsh industrial environments, ensuring that systems operate efficiently and safely. Additionally, the company's check valves are versatile, serving different industries such as petroleum, chemical, marine, and many others.


Check valves are essential components in various industries, and they play a critical role in ensuring that industrial processes are efficient, safe, and regulatory compliant. DIDLINK GROUP's range of check valves is designed to meet the needs of different industries, delivering value and quality to customers worldwide.