Silencing Check Valve China Factory and Suppliers Industrial Water Hammer Prevention

Looking for high-performance silencing check valves? As leading China suppliers and a certified factory, we provide automatic backflow prevention solutions that eliminate water hammer and reduce noise. Ideal for HVAC, industrial plants, and high-rise plumbing to protect pumps and piping infrastructure.

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Details

Detailed Parameters

Size Range (DN)	DN40 to DN500 mm	Max Pressure	Up to 2.5MPa
Body Materials	Ductile Iron / 316L Stainless Steel	Temperature Range	-10°C to 80°C (up to 150°C for SS)
Sealing Material	EPDM / NBR Rubber Coated	Connection Standard	ASME B16.5 / GB/T 17241.6
Noise Level	≤65dB to ≤75dB	Closure Speed	Rapid 80% / Adjustable Final 20%
Life Cycle	50,000+ Operation Cycles	Lubrication	PTFE-coated Guide Sleeve

Key Advantages

Water Hammer Prevention

Dual-stage shutoff reduces pressure surges to ≤1.3x working pressure, protecting pipes from rupture.

Rapid Response

Spring-loaded discs react instantly to pressure changes, preventing backflow in as little as 0.3 seconds.

Superior Noise Reduction

Rubber-infused sealing and streamlined paths cut hydraulic noise by up to 50% compared to standard valves.

Wear-Resistant Design

PTFE-coated sleeves eliminate metallic friction and high-pitched squeaks for smoother operation.

Optimized Flow Path

The "waist drum" body design minimizes turbulence and reduces the flow resistance coefficient.

Global Compatibility

Available in multiple flange standards (ASME/GB) to fit seamlessly into international piping systems.

Product Gallery

Management Platforms

HVAC Systems

Optimized for noise-sensitive commercial buildings and temperature control loops.

Industrial Plants

Robust construction for handling mild slurries and dirty water in manufacturing facilities.

High-Rise Plumbing

Prevents water hammer in high-pressure vertical supply networks for tenant comfort.

Fire Protection

Reliable unidirectional flow control for critical emergency water delivery systems.

Residential Pump Rooms

Lead-free brass options meeting FDA standards for potable water and quiet operation.

Boiler Feed Lines

Stainless steel 316 components designed for high-temperature, high-pressure environments.

Investment Return Comparison

Feature	Traditional Check Valve	STORAEN Silencing Valve
Noise Level	High (Loud Slamming)	Low (≤70dB/Cushioned)
Water Hammer Risk	High Pressure Surges	Low (Controlled Closure)
Maintenance Cost	Frequent Pipe Repairs	Significant Reduction
Equipment Lifespan	Reduced by Vibration	Extended by Stabilization
Closure Mechanism	Gravity/Weight Based	Precision Spring-Loaded

Frequently Asked Questions

Q: What makes a silencing check valve different from a standard check valve?

Unlike standard valves that slam shut, silencing check valves use a spring-loaded, slow-closing mechanism and noise-absorbing materials to prevent water hammer and minimize acoustic impact.

Q: Which is better: the swing-type or lift-type silencing valve?

Swing-types are ideal for large diameters and low pressure due to lower flow resistance. Lift-types are preferred for small diameters, high-pressure environments, and precision control.

Q: Can these valves be used with corrosive media?

Yes, we offer 316L stainless steel bodies and optional epoxy linings specifically designed to resist corrosion in harsh industrial environments.

Q: How does the valve prevent "water hammer"?

It uses a dual-stage shutoff where the disc closes 80% rapidly to stop backflow, then the final 20% closes slowly, preventing the sudden pressure spike known as water hammer.

Q: What is the recommended installation orientation?

Generally, they should be installed in a horizontal pipeline with the bonnet facing upward, following the flow direction arrow marked on the valve body.

Q: Are these valves suitable for potable water systems?

Yes, we provide lead-free brass options that meet FDA standards, making them perfectly safe for residential and commercial drinking water systems.