In every piping system, safety and reliability start with controlling the direction of flow. One of the most important components that ensures smooth operation is the check valve. Also known as a non-return valve or one-way valve, it allows fluid (liquid or gas) to move in only one direction, automatically preventing backflow that could damage equipment, disrupt processes, or compromise safety.
At Anson Flow, we specialize in providing durable, precision-engineered check valves for industries ranging from oil & gas to water treatment and semiconductors. Let’s take a closer look at what check valves are, how they work, and the options available.
What Is a Check Valve?
A check valve is a self-operating valve with no external control—it opens when fluid flows in the desired direction and closes when flow reverses. This simple yet powerful mechanism protects pumps, compressors, and pipelines from reverse pressure or contamination.
Why Are Check Valves Important?
Check valves play a vital role in industrial piping systems:
· Prevent backflow that can damage pumps and equipment.
· Protect pipelines against sudden surges and water hammer.
· Maintain system pressure and prevent siphoning.
· Improve safety and reliability in high-pressure or sensitive applications.
Common Types of Check Valves
Different applications require different valve designs. The most widely used types include:
· Swing check valves – use a hinged disc, ideal for large pipelines.
· Spring (lift) check valves – quick response with compact design, excellent for higher velocity flows.
· Dual plate check valves – space-saving, low pressure drop, suitable for clean processes.
· Wafer type check valves – thin and lightweight, perfect where space is limited.
Anson Flow Check Valve Series
Our product range covers a variety of designs to meet diverse industrial needs:
· AF-CV2 2-Piece Spring Check Valve
Pressure rating: 600/800 PSI
Size range: ¼″–3″
· AF-CVT 3-Piece Spring Check Valve
Pressure rating: PN 40
Size range: ¼″–4″
Stainless steel disc/spring with PTFE seal for durability
· AF-CVW Swing Check Valve
Pressure rating: 600 PSI
Size range: ½″–24″
Available in ANSI, PN, and JIS standards
· AF-CVD Dual Plate Check Valve
Pressure rating: ANSI 150–2500, PN10–40, JIS10–20K
Size range: 1½″–60″
Available in wafer, lugged, and flanged types
· AF-CVR Wafer Type Spring Check Valve
Pressure rating: ANSI 150–300, JIS10–20K
Size range: ½″–8”
Compact wafer design in SS316 with spring-loaded mechanism
· AF-74 Instrumentation Check Valve
Pressure rating: up to 3000 PSI
Buna-N O-ring, SS304 spring, threaded or compression ends for instrumentation applications
Why Choose Anson Flow?
With over 20 years of experience, Anson Flow has become a trusted Taiwanese manufacturer of industrial valves. Our certifications—including ISO 9001:2015, API 607, PED, and ATEX—demonstrate our commitment to quality and safety.
We proudly support clients across industries with:
· Reliable product performance
· Wide material options for corrosion resistance
· Custom OEM solutions tailored to your needs
· Global logistics and technical support
Conclusion
From preventing costly downtime to safeguarding sensitive equipment, check valves are truly the unsung heroes of fluid control systems. Anson Flow’s wide selection of check valves ensures you’ll find the right solution for your project—whether it’s a compact wafer design or a heavy-duty dual plate valve.
👉 Explore our full check valve range here: Anson Flow Check Valves
📧 Email us at: sales@ansonflow.com
🌐 Visit: https://www.ansonflow.com/