Asten Controls LLP

Swing Check Valve – Heavy-Duty Non-Return Valve for Reverse Flow Protection

The Swing Check Valve is a robust non-return valve designed to allow unidirectional flow and prevent backflow in pipelines. It operates using a hinged disc (flap) that swings open with forward flow and closes automatically with reverse flow, ensuring zero reverse leakage. Suitable for both horizontal and vertical (upward flow) installations, this valve is ideal for low-velocity and gravity-based systems.

Manufactured from premium materials like Cast Iron, WCB, SS304, SS316, and Bronze, it offers excellent durability, corrosion resistance, and long service life in water, oil, steam, gas, and chemical applications.

• ✔️ Design Type: Swing-type non-return valve

• ✔️ Material Options: Cast Iron, Cast Steel (WCB), Stainless Steel (SS304/316), Bronze

• ✔️ Size Range: 1” to 24” (DN25 to DN600)

• ✔️ Pressure Ratings: PN10 / PN16 / PN25 / ANSI 150 / ANSI 300

• ✔️ End Connections: Flanged (ASME/ANSI/DIN/IS) / Screwed / Socket Weld

• ✔️ Seat Options: Metal-to-metal / Soft Seat (EPDM, PTFE, NBR)

• ✔️ Flow Direction: Horizontal or vertical (upward only)

• ✔️ Face-to-Face: As per ANSI B16.10 / API 6D

• Working Medium: Water, Steam, Air, Oil, Gas, Chemicals

• Operating Temperature: -10°C to +450°C (material dependent)

• Design Standards: API 6D / BS 1868 / ASME B16.34 / IS 5312

• Leakage Test: API 598 / EN 12266-1

• Optional Trim: 13% Cr, SS316, Monel, Stellite Hardfacing

• Water Supply & Drainage Systems

• Boiler Feed Lines & Steam Systems

• Power Plants (Thermal, Hydro, Nuclear)

• Petrochemical & Refinery Installations

• Oil & Gas Pipelines

• Firefighting & HVAC Networks

• Pulp & Paper Industry

• Chemical & Fertilizer Plants

• Counterweight and lever for smooth closing

• Soft sealing for zero leakage

• Non-slam dampened disc for surge protection

• Special coatings for corrosive or abrasive media

• ATEX-certified versions for hazardous areas