Swing Check Valve
Swing Check Valve Manufacturer
MVS Valves offers high-performance Swing Check Valves engineered to provide reliable and cost-effective backflow prevention across industrial, commercial, and municipal pipelines. These valves operate using a gravity or spring-assisted swinging disc mechanism that ensures unobstructed flow and closes promptly when reverse flow occurs, protecting systems from contamination and pressure surges.
The design enables full-flow capacity with minimal pressure drop, making these valves highly efficient for continuous and intermittent operations. Built to meet international standards such as API 598, MSS-SP-71, and BS 1868, MVS Swing Check Valves are trusted for their durability and consistent performance under demanding pressure and temperature conditions.
To meet a wide spectrum of industrial needs, MVS manufactures Carbon Steel Swing Check Valve Class 150 Flanged Ends, ideal for standard pipeline installations. For more demanding service conditions, the Stainless Steel Swing Check Valve Class 300 Flanged Ends and SS 304 CF8 Swing Check Valve Class 600 Flanged Ends provide enhanced corrosion resistance and long service life. In high-pressure environments, options such as SS 316 CF8M Swing Check Valve Class 900 Flanged Ends and Duplex Steel Swing Check Valve Class 1500 Flanged Ends offer superior mechanical strength and chemical resistance.
For aggressive or marine applications where enhanced durability is critical, MVS also offers the Super Duplex Bolted Cover Swing Check Valve Flanged Ends, ensuring maximum operational security in highly corrosive environments. Additionally, for compact piping systems, the Stainless Steel Swing Check Valve Threaded Screwed Ends provides a flexible and space-saving solution, retaining the same reliability and sealing integrity.
Available in both horizontal and Y-pattern cast configurations, MVS Swing Check Valves are constructed using materials like carbon steel, ductile iron, and high-grade stainless steels to suit a wide range of fluid media. These valves are easy to install, maintain, and operate—making them a preferred choice in sectors such as oil and gas, water treatment, chemical processing, and power generation.
Whether used in standard utility lines or more critical systems requiring high-pressure containment, MVS Swing Check Valves make sure dependable one-way flow and safeguard pipelines from reverse fluid movement while maintaining peak performance and minimal maintenance requirements.
Specification
| Specification | Details |
|---|---|
| Valve Style | Bolted Cover Swing Type Check Valve or Non Return Valve |
| Size Range | DN 50 – DN 600 (2″–24″) |
| Pressure Class | Class 125# – 600# |
| Body Materials | Ductile Iron, Cast Carbon Steel (WCB), Stainless Steel |
| Seat Type | Metal-to-metal or soft-seated, Aluminium Bronze |
| Disc Material | Stainless Steel or Aluminium Bronze |
| End Connections | Flanged per ANSI/BS/DIN |
| Testing Standards | API 598 |
| Operating Media | Water, Oil, Steam, Gas |
| Operating Temperature | Up to ~538 °C (1000 °F), material‑dependent |
Material of Construction
| Body | Ductile Iron, Cast Carbon Steel (WCB) | Stainless Steel (CF8/CF8M), Alloy Steel, Y-pattern cast bodies |
| Disc | Stainless Steel, Bronze-lined cast | Hardened SS, corrosion-resistant coatings |
| Seat | Metal-to-metal or bronze rubber seal (EPDM/NBR) | PTFE, Viton, or custom elastomers |
| Hinge / Pin | Stainless Steel hinge pin | Upgraded SS alloys or coated pins |
Application Industries
Crude Oil & Natural Gas Industry
Chemical & Petrochemical Industry
Water & Wastewater Treatment
Nuclear & Thermal Power Generation
Food & Beverage Industry
Pharmaceutical & Biotechnology
Pulp & Paper Industry
Mining & Mineral Processing
Marine & Shipbuilding
HVAC & Building Services
Automotive & Paint Chemical Manufacturing
Environmental & Bio Gas Renewable Energy
Steel & Metal Processing
Fertilizer Plants, Polymer Production
Cosmetics & Personal Care
Cement & Construction
Chlor-Alkali Industry
Mineral Acids Industry
Related Valves
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Swing Check Valve
Frequently Asked Questions
Can’t find your duty condition here? Send us the media, size, pressure and temperature and we will specify the valve. Contact us
What is a swing check valve and how does it work?
A swing check valve has a disc hinged at the top of a Y-pattern body. Forward flow pushes the disc up and out of the way; when flow stops or reverses, gravity and back-pressure swing it closed against the seat. There is no spring and no actuator. Because the disc clears the bore almost completely when open, it has the lowest pressure drop of any check valve — which is why it is the default on large, steady, low-velocity lines.
Which body, disc and seat materials are available?
Body in Ductile Iron, Cast Carbon Steel (WCB), Stainless Steel CF8/CF8M or alloy steel, in Y-pattern cast construction. Disc in stainless steel, aluminium bronze or bronze-lined cast, with hardened stainless and corrosion-resistant coatings available. Seats metal-to-metal or soft-seated in bronze rubber (EPDM/NBR), PTFE, Viton or custom elastomers. Soft seating gives a tighter shut-off; metal seating lasts longer where the media carries particulate.
What size, pressure class and standards apply?
DN 50 to DN 600 (2″–24″) at Class 125# to 600#, with flanged ends per ANSI, BS or DIN. Tested to API 598. MVS is ISO 9001:2015 certified and supplies test certificates with every order.
Swing check or dual plate — which should I use?
A swing check gives the lowest pressure drop and is ideal where flow is steady and reversal is gradual. But its disc is slow to close, so on a pump discharge line a sudden trip can let reverse flow build before the disc lands — which is what causes slam and water hammer. Where that risk exists, use a spring-assisted dual plate check valve, which closes as flow decays rather than after it reverses.
Are you a manufacturer, and what are your minimum order quantity and customization options?
MVS has manufactured valves at its own works since 1978, is ISO 9001:2015 certified and exports across several continents. The minimum order quantity is 20 pieces. Special body alloys, soft seat materials and non-standard sizes are built to order. Confirm the installation orientation at enquiry — a swing check must never be fitted with downward flow.