Spring Closed Wafer Check Valves

The butt-clamp check valve is suitable for water, steam, oil, gas and weak corrosive media, widely used in petroleum, chemical, electric power, HVAC and other systems. The valve has a compact structure and is suitable for horizontal or vertical installation, especially for pipelines with restricted space. The working temperature range is generally -29℃ to +425℃, depending on the selected material. The main function is to prevent backflow of media, relying on the fluid's own pressure to open and close automatically, without external drive. Commonly used materials include carbon steel, stainless steel, alloy steel, sealing surface can be selected rubber, PTFE or hard alloy, to adapt to a variety of complex working conditions.

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products

Spring Closed Wafer Check Valves

Model: H77X, H71W, H47H

Subtitle：Quick-closing Wafer Check Valve

The spring-loaded wafer check valve is a compact, high performance non-return valve designed to prevent reverse flow in piping systems that require rapid closure and minimal pressure drop. The valve features a spring-assisted disc and wafer-type design that ensures immediate sealing upon flow reversal, making it ideally suited for preventing water hammer and space-efficient applications...

Classification:Clamping check valves

Working conditions:drugs manufacturing factory, waterwork, water treatment plant, petrochemical industry

Product Overview	The spring-loaded butt check valve is a compact, high-performance, non-return valve designed to prevent reverse flow in piping systems that require rapid closure and minimal pressure drop. The valve features a spring-assisted disc and wafer-type design that ensures immediate sealing upon flow reversal, making it ideal for water hammer prevention and space efficiency applications. Constructed of stainless steel, carbon steel or ductile iron, this durable and corrosion-resistant valve is suitable for use in water, steam, oil and natural gas systems. Its lightweight, no-where design simplifies installation and reduces system weight, while the spring mechanism increases reliability in dynamic flow conditions.

Main characteristics	Spring-assisted closure: Integrated spring ensures rapid disc closure, minimizing the risk of water hammer and backflow. Efficient cracking pressure (down to 0.1 psi) for effective operation. Counter-clamp design: compact and lightweight, ideal for space-constrained installations. Mounts between flanges with no other bolts or gaskets. Low resistance design: optimized flow path minimizes pressure drop and reduces energy consumption. Ideal for high flow systems such as HVAC and water distribution networks. Durable Construction: Body Material: Stainless Steel (ASTM A351 CF8M), Carbon Steel (ASTM A216 WCB), or Ductile Iron (EN-GJS-400-18) Internals: Stainless Steel discs and springs for corrosion resistance. Compliance: Meets API 594, ASME B16.34 and ISO 17292 for industrial applications.

Product Advantages	Quick Close: Spring mechanism ensures an instant seal, preventing backflow and water hammer. Energy Efficiency: Low pressure drop reduces pump workload and energy costs. Space-saving: the clamp-on design minimizes installation space and system weight. Lower maintenance: self-cleaning discs and corrosion-resistant materials extend service life.

Why choose us?	Dependable reliability: trust in HVAC, water treatment and industrial systems. Global Compliance: Meets API, ASME and ISO standards for international programs. Customized solutions: optional coatings (epoxy, PTFE) or high temperature materials (Inconel). FAST DELIVERY: Standard sizes in stock are shipped worldwide in 7 days.

Medium of use

Water/hot water, oils, waters, petrochemical, General,

working condition

drugs manufacturing factory, waterwork, water treatment plant, petrochemical industry, paper mills, food factory

summarize

The spring-loaded wafer inspection valve is a versatile, efficient solution for preventing reverse flow in dynamic piping systems. Its spring-assisted closure, compact wafer design and adherence to industry standards make it ideally suited for applications requiring fast response and space optimization. Whether in water treatment plants, HVAC networks or industrial processes, the valve ensures reliable maintenance performance reliability.

Product Parameters

Nominal diameter	2" to 24" (DN50 to DN600)
Nominal pressure	Class 150 to Class 900 (ASME B16.34)
Applicable temperature	-29°C to 200°C (-20°F to 392°F)
Faith Materials	Stainless steel (CF8M), carbon steel (WCB), ductile iron (EN-GJS-400-18)
Valve material	Stainless steel (316/304)
Spring Material	Stainless steel (Inconel X750 for high speed applications)
connection method	Clamping type (suitable between ANSI/EN/DIN flanges)