Swing Check Valve Manufacturer in India – Speciality Valve
Speciality Valve is a Swing Check Valve Manufacturer in India, producing high-performance valves across all pressure classes and materials. Our swing check valves are engineered for reliable one-way flow, preventing reverse flow and protecting pumps, compressors, and critical equipment. Designed in accordance with API 594, API 6D, ASME B16.34, and BS 1868, they meet the most demanding industrial requirements.
Function & Working
Swing check valves operate using a hinged disc that swings open under forward flow and closes automatically when flow reverses. This mechanism ensures one-way flow, prevents reverse fluid movement, and reduces the risk of water hammer. The design offers minimal pressure drop and long service life, making it ideal for continuous operation.
Advantages of Speciality Valve Swing Check Valves
Manufactured in ASME Class 150 to 4500 and PN 10 – PN 420
Offered in bolted cover, pressure seal, non-slam, tilting disc, spring-assisted, and cryogenic configurations
Top-entry options available for quick inline maintenance
Designed for oil & gas, LNG, power, marine, and industrial pipelines
Available in cast, forged, and exotic alloys for diverse service conditions
Types Offered
Bolted Bonnet Swing Check Valve – reliable sealing for medium pressure classes
Pressure Seal Swing Check Valve – compact design for high-pressure, high-temperature service
Non-Slam Swing Check Valve – spring-assisted for preventing water hammer
Tilting Disc Swing Check Valve – reduced slam effect, smoother closure
Cryogenic Swing Check Valve – extended bonnet design for –196 °C LNG and cryogenic service
Industries Served
Oil & Gas Pipelines
Petrochemical and Refining Plants
Power Generation (Thermal, Nuclear, Renewable)
LNG Terminals and Cryogenic Applications
Marine & Offshore Systems
Water & Wastewater Treatment
Pulp & Paper, Cement, Steel, HVAC
Technical Specifications
Design Standards: API 594, API 6D, ASME B16.34, BS 1868, DIN EN 12334
Pressure Class: ASME 150 – 4500, PN 10 – PN 420
Size Range: DN 15 – DN 1200 (½” – 48”)
End Connections: Flanged (RF, RTJ), Butt Weld (BW), Socket Weld (SW), Threaded (NPT, BSP)
Seat Options: Metal-to-metal or resilient; hard-faced with Stellite or equivalent alloys
Body Materials Offered
Speciality Valve manufactures swing check valves in a full spectrum of materials:
Carbon Steel: WCB, WCC, LCB, LCC, A105
Low Alloy Steel: WC6, WC9, C12A, F11, F22
Stainless Steel: CF8 (SS304), CF8M (SS316), CF3, CF3M, F304, F316, F321, F347
Duplex & Super Duplex: F51, F53, F55, 2205, 2507
Nickel Alloys: Inconel (600, 625, 800, 825), Monel (400, K500), Hastelloy (C22, C276, B2, B3)
Special Alloys: Alloy 20, Titanium (Gr.2, Gr.5), Zirconium, Aluminium Bronze, Bronze, Brass
Cryogenic Steels: 9% Nickel and special cryogenic stainless grades for –196 °C service
Standards & Testing
Every swing check valve is tested and certified to ensure long-term reliability and safety:
Pressure Testing: Hydrostatic body test at 1.5 × rated pressure; seat leakage test at 1.1 × rated pressure as per API 598
Non-Destructive Testing (NDE): Radiography (RT), Ultrasonic (UT), Magnetic Particle (MPI), and Dye Penetrant (LPT) available on request
Material Traceability: Heat number traceability with EN 10204 3.1 / 3.2 certification
Special Testing: Cryogenic testing (–196 °C), fire-safe testing, fugitive emission compliance (ISO 15848), and helium leak tests for critical applications