HS41X Anti-Flow Check Valve (Standard Type) is a check valve used to prevent reverse flow of media, consisting of two connected check valves and a filter assembly, achieving zero backflow through a dual sealing mechanism. Its core function is to protect downstream equipment or media from contamination, suitable for municipal pipeline networks, fire protection systems, and other scenarios.

Core Parameters

Nominal Pressure: 1.0-2.5 MPa

Bore Size Range: 50-600mm

‌Applicable Temperature: 0-80℃

Medium: Mainly freshwater

Valve Body Material: Cast Iron, Ductile Iron, Stainless Steel, etc.

Structural Features

Streamlined valve body design with moving parts made of stainless steel or wear-resistant materials for extended service life. The standard model does not include a drain valve; anti-backflow function is achieved solely through dual check valves.

Application Scenarios

Suited for scenarios requiring prevention of reverse flow in high-rise building water supply and fire protection systems. Install horizontally to ensure the flow direction aligns with the valve body arrow; when vertically installed, the valve cover should face outward.