Silencing check valve

Water system check valves are mainly used for clean water, hot and cold circulating water, domestic water supply and industrial water system, widely used in building water supply and drainage, HVAC, fire fighting and industrial water treatment and other fields. It is suitable for normal temperature and pressure to medium pressure working condition, and the working temperature range is generally from 0℃ to 120℃. Its function is to prevent backflow, protect pumps and system equipment, and ensure the safety of water quality. The valve relies on media pressure to open and close automatically, compact structure, opening and closing sensitive. Commonly used materials are ductile cast iron, brass, stainless steel, etc., the sealing surface can be rubber, PTFE, etc., good corrosion resistance, easy maintenance.

fig. beginning

products

Silencing check valve

Model: H41X

Subtitle：Water Hammer Elimination Check Valve

The Silenced Check Valve is a cost-effective check valve designed to prevent backflow and reduce water hammer in piping systems. Featuring a spring-assisted closing mechanism that ensures a quick seal to minimize pressure fluctuations, this valve is ideal for applications where noise reduction and budget are important.

Tags:Water Hammer Elimination Check Valve

Classification:Water system check valves

Working conditions:construction work, HVAC system, waterwork, water treatment plant

Product Overview	The Silenced Check Valve is a cost-effective check valve designed to prevent backflow and reduce water hammer in piping systems. Featuring a spring-assisted closing mechanism that ensures a quick seal to minimize pressure fluctuations, this valve is ideal for applications where noise reduction and budget are important. Constructed of ductile iron, stainless steel or bronze, the valve is durable and corrosion-resistant for water, steam and oil systems. While it does not achieve zero water hammer, its spring-loaded design provides significant relief from pressure fluctuations, striking a balance between performance and price.

As long as the characteristics	Spring-assisted closure: The spring mechanism ensures rapid flap closure, reducing water hammer and noise. The closing speed is fixed, providing consistent performance without the need for adjustment. Cost-effective design: Simplified structure compared to hydraulic damping systems, providing a more economical solution. Durable construction: Valve body material: ductile iron (EN-GJS-400-18), stainless steel (CF8M) or bronze (C83600). Internal structure: Stainless steel valve flap and spring for corrosion resistance and long service life. Compact and lightweight: Space-saving design simplifies installation in tight spaces. Compliance: Meets EN 1074, AWWA C508 and ISO 5208 for water and wastewater applications.

Product Advantages	Reducing Water Hammer: Spring-assisted closure minimizes pressure fluctuations but does not completely eliminate them. Economical and efficient: more economical than hydraulic damping systems, great value for money. Low maintenance: self-cleaning design and corrosion-resistant materials. Easy to install: compact and lightweight for quick integration into existing systems.

Medium of use

Water/hot water

working condition

construction work, HVAC system, waterwork, water treatment plant

summarize

The Silenced Check Valve is a practical and affordable solution for preventing backflow and reducing water hammer in water, steam and oil systems. While it does not achieve zero water hammer or ultra-low noise, its spring-assisted closing mechanism strikes a balance between performance and price. Ideal for general purpose applications, the valve ensures reliable operation and system protection at a very competitive price.

Product Parameters

Nominal diameter	DN50 to DN600 (2" to 24")
Nominal pressure	PN10 to PN25 (EN 1092) or Class 150 to Class 300 (ASME B16.34)
Applicable temperature	-10°C to 120°C (EPDM seals) / -20°C to 80°C (NBR seals)
Valve Material	Ductile Iron (EN-GJS-400-18), Stainless Steel (CF8M), Bronze (C83600)
Valve material	Ductile iron (EN-GJS-400-18), stainless steel (CF8M),
sealing material	EPDM, NBR or PTFE for zero leakage
connection method	Flanges (EN 1092, ASME B16.5)
leakage rate	Class VI (ISO 5208)