Swing Check Valve (ANSI)
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Nominal Size : |
1/2″-24″ |
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Pressure Rating : |
150LB-300LB-600LB-900LB-1500LB |
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Design Standards : |
API 594 ‘B’ |
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Actuation : |
Lever operated |
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End Connections : |
Bw, Flanged-Rf/RTJ |
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Materials : |
ASTM A105&A216-WCB&A352-CF8&A352-CF8M&A352-CF3&A352-CF3M |
In industrial piping systems, the ANSI swing check valve is designed to reliably prevent reverse flow, while offering low pressure drop and dependable tightness. Manufactured in accordance with ANSI/ASME standards and available in a wide range of materials, it integrates seamlessly into your process lines.
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What Is a Swing Check Valve (ANSI) and How Does It Work?
Also known as a swing check valve, this valve operates on the principle of a disc that swings open in the direction of flow and swings back onto the seat when reverse flow starts. This simple yet effective design minimizes backflow risk in water, steam, gas and process media. Low turbulence, a large flow cross-section and optional metal or soft seats provide both energy efficiency and long service life.
Standards and Compliance (ANSI/ASME)
The Swing Check Valve is available in ANSI/ASME Class 150/300/600 pressure ratings and is typically compliant with:
- ASME B16.10 – Face-to-face dimensions
- ASME B16.5 – Flanged ends
- ASME B16.34 – Pressure–temperature ratings
Each valve is factory-tested according to API 598 leakage test requirements, ensuring verified tightness and reliable performance. This reduces the risk of unexpected reverse flow and water hammer in critical processes.
Main Applications
Typical application areas include:
- Power generation
- Heating and cooling (HVAC) systems
- Chemical and petrochemical plants
- Refineries
- Water and wastewater treatment
- Fire protection lines
- Food & beverage plants
- Mining and general industrial installations
With large sizes, flanged end connections and various body/disc material options, these valves are suitable for corrosive and abrasive services as well.
Benefits and Advantages
- Low pressure drop: Large flow cross-section supports energy-efficient operation.
- Reliable shut-off: Fast and stable closure as soon as reverse flow begins.
- Long service life: Wear-resistant disc and hinge-pin design.
- Easy maintenance: Few moving parts and simple internal construction.
- Flexible material range: Options for corrosive environments.
- Standards compliance: ANSI/ASME dimensional and test conformity.
- Reduced water hammer risk: Proper sizing helps minimize transient pressure surges.
- Wide application spectrum: Compatible with water, steam, gases and diverse process fluids.
Selection Guide: Sizing and Pressure Drop
Proper selection of a swing check valve must be based on flow rate, fluid viscosity, density, operating pressure–temperature conditions and line size. Oversizing a valve can increase cost and cause unstable disc behaviour at low velocities; undersizing can result in high ΔP, noise and premature wear. During the design phase, it is recommended to use the manufacturer’s Kv/Cv data and perform hydraulic calculations to optimize the valve size.
Swing Check Valve (ANSI) Price: What Drives Cost?
The price of an ANSI Swing Check Valve is influenced by:
- Nominal size (DN / NPS)
- Pressure class (Class 150 / 300 / 600)
- Body and disc material
- Seat type (metal or soft seat)
- End connection (RF flange / BW, etc.)
- Test and certification requirements
- Requested delivery time
Providing detailed information such as drawings, P&IDs or a technical specification will improve quotation accuracy and help shorten lead times.
Contact Us for the Right Solution for Your Project
We offer application-specific swing check valve (ANSI) solutions with correct sizing, standards-compliant design and reliable delivery. For configurations that reduce unit costs and energy losses while simplifying maintenance, contact us to request a quotation. Our team will support you promptly with technical selection and documentation.
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