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Home / Products / Check Valves / Silent Check Valves / HC41X Ductile Iron Silencer Check Valve Flanged Lift‑Type Silent Non‑Return Valve Anti‑Water‑Hammer for Water Pump Outlet

HC41X Ductile Iron Silencer Check Valve Flanged Lift‑Type Silent Non‑Return Valve Anti‑Water‑Hammer for Water Pump Outlet

HC41X silencer check valve is a piston lift‑type soft‑seal non‑return valve. When medium flows forward, the internal piston disc lifts up to allow smooth passage. Once back‑flow occurs, medium pressure pushes the piston down rapidly onto the seat to cut off reverse flow.
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Product Description

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Item

Specification

Product Name

HC41X Silencer Check Valve

Valve Body Material

Ductile Iron

Surface Treatment

Epoxy anti‑corrosion coating

Connection Type

Flange End

Sealing Type

Rubber soft seal

Structure Type

Piston / Lift‑type silent check

Working Medium

Clean water, circulating water, fire‑fighting water

Core Function

Prevent medium back‑flow, eliminate closing noise, reduce water‑hammer impact

Installation

Horizontal & vertical pipeline available

Nominal Size

DN40‑DN400

Nominal Pressure

PN10, PN16

Temperature Range

0℃ ~ 80℃

Design & Functional Innovations

  • Acoustic Noise Reduction: Engineered with an anti-slam internal mechanism that minimizes operational chatter and eliminates fluid-borne resonance in quiet environments.

  • Rapid-Response Disc Travel: Shortened stroke length allows the valve disc to seat instantly upon flow reversal, mitigating severe pressure surges and water hammer shocks.

  • Space-Saving Footprint: Ultra-compact face-to-face dimensions conserve valuable layout space inside tight mechanical closets and pump skids.

  • Omni-Directional Mounting: Versatile internal architecture allows seamless installation in both vertical riser runs and horizontal flow channels.

System Compatibility

  • Booster pump discharge manifolds and header lines

  • Commercial high-rise plumbing and riser networks

  • Closed-loop domestic water circulation circuits

  • General industrial water utility and fluid delivery lines

Field Installation Guidelines

  • Pre-Assembly Flush: Thoroughly inspect and clean internal flow passages to clear foreign debris prior to inline seating.

  • Directional Alignment: Verify that system line-flow aligns perfectly with the directional arrow cast into the valve housing.

  • Upstream Piping Requirements: Maintain adequate straight pipe diameters both upstream and downstream to ensure laminar flow into the disc area.

  • Debris Protection: Install an inline strainer ahead of the inlet when operating in fluids carrying solid particulate matter.

  • Orientation Verification: Confirm structural alignment according to the designated horizontal or vertical piping orientation.

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.

For more products, please contact us

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Email: Eileenye@huhang.cn / tina@huhang.cn
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Eileen: +852 5169 6374
Telephone: 
Eileen: +86-15906072387
Tina: +86-18150520502
Address: No. 11 meiyu road, Meiyu valve park, Luncang, Nan'an city, Quanzhou city, Fujian province, China
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