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China factory Silencer Check Valve Flange Type Silent Non‑return Valve Low Noise Water Pump Outlet Check Valve

China factory Silencer Check Valve Flange Type Silent Non‑return Valve Low Noise Water Pump Outlet Check Valve

This cast steel swing check valve is designed to prevent medium back‑flow in piping systems. It adopts swing disc structure with full bore passage, featuring low flow resistance and stable switch action

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Product Description

Product Specification
Design Spec	Face to Face	Flange End		Test &Check		Pressure-Temp		Marking	Supply
GB/T 12236 GB/T 12235	GB/T 12221	JB/T82		GB/T13927 GB/T26480		GB/T12224		GB/T 12220	JB/T 7928
Main Part Material
Part Name	Part Materical
Body/Bonnet	WCB		WC6		LCB		CF8
Disc	25		1Cr18Ni9Ti		1Cr18Ni9Ti		1Cr18Ni9Ti
Swing Arm	WCB		25Cr2MoV		LCB		CF8
Graphite Gasket	18-8Flexible Graphite
Bolt	35/35CrMo		25Cr2MoV		1Cr18Ni9Ti		1Cr18Ni9
Suitable Temp	-29-425℃		-29-550℃		-46-350℃		-46-200℃
Suitable Medium	Water,Oil,Steam		Steam,Oil		Propane,Ethene		Nitric Acid

Technical Specifications

Body Material: Cast Steel (WCB)
Fluid Dynamics: Silent check function with rapid-response short-stroke disc
Surge Control: Engineered to absorb shock and suppress water hammer effects
Mounting Orientation: Supports dual placement (vertical or horizontal piping runs)
Footprint: Space-saving, short face-to-face dimensions for tight layouts

Key Highlights

Noise Suppression Technology: Specially designed internal geometry dampens operation noise,
Rapid Shut-off Mechanism: The short disc travel distance triggers immediate seating, preventing backflow before severe fluid reversal occurs.
System Shock Mitigation: Significantly reduces destructive hydraulic shock, safeguarding pumps, instruments, and downstream equipment.
Flexible Layout Compatibility: Versatile body profile enables straightforward integration into both vertical risers and flat header lines.
Durable Construction: Rugged cast steel shell provides reliable pressure containment and durability under rigorous service conditions.

Primary Applications

Pump discharge headers and isolation lines
High-rise residential and commercial plumbing risers
Municipal booster stations and main distribution networks
Industrial cooling towers and process water loops

Precision Valve Manufacturing

Professional Valve Manufacturer | Integrated Manufacturing

Raw Material

We select high-quality raw materials according to product specifications and international standards. All incoming materials are carefully inspected to ensure chemical composition, mechanical properties and traceability.

Forging & Casting

Advanced forging and casting processes are used to produce strong and reliable valve bodies and components. Strict process control ensures uniform structure, dimensional accuracy and excellent mechanical performance.

CNC Machining

Our CNC machining equipment provides precise and consistent processing of valve components. Critical dimensions, threads and sealing surfaces are strictly controlled to ensure accurate assembly and reliable sealing performance.

Shot Blasting & Coating

Valve surfaces are professionally shot blasted to remove rust, scale and impurities. Protective coatings are then applied according to customer requirements, providing excellent corrosion resistance and a durable surface finish.

Pressure Testing

Every valve undergoes strict pressure testing before shipment. Body and seat tests are performed according to applicable standards and customer specifications to verify pressure resistance and sealing reliability.

Quality Inspection

Our quality control team conducts comprehensive inspections throughout the production process. Finished valves are checked for dimensions, appearance, materials, pressure performance and overall quality before final approval and shipment.

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