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Swing Check valve
Explore the Essentials
- API 600 Gate Valves
- API 603 Gate Valves
Swing Check Valve: Prevent Backflow, Ensure Safety
Size Range
- Bolted Cover: 2” to 48” (DN 50 mm to DN 1200 mm)
- Pressure Seal: 2” to 24” (DN 50 mm to DN 600 mm)
Pressure Ratings
- Bolted Cover: ASME Class 150, 300, 600, 900, 1500, 2500
- Pressure Seal: ASME Class 600, 900, 1500, 2500
Design Standards
- API 6D
- API 594
- ASME B16.34
- BS 1868
End Connection Types
LIBRA Swing Check Valves are offered in various end configurations:
- Flanged (RF/RTJ): ASME B16.5
- Butt-Weld Ends: ASME B16.25
- Customized Ends: Available as per project requirement
Operation Types
Swing Check Valves are non-actuated (self-operated) and function automatically based on
flow reversal.
Optional: Counterweight or Dashpot (Hydraulic Dampening) available for surge
control
Key Features
- Swing-Type Disc: Designed for low-pressure drop and full bore flow
- Renewable Seat Rings: Optional hard-facing with Stellite #6
- Backpressure-Activated Closure: Ensures reliable shutoff
- Bolted or Pressure Seal Cover: Allows for easy maintenance or high-pressure use
- Optional Dashpot: Controls disc slam and prevents water hammer
Service Parameters
- Pressure: Up to 4500 psi
- Temperature: -46°C to +593°C
- Applications:
- Oil & Gas Pipelines
- Petrochemical & Chemical Plants
- Thermal & Nuclear Power
- Marine & Water Supply
- Steam & Condensate Lines
Advantages
- Non-return flow protection with minimum pressure drop
- Zero Leakage Seating under reverse flow conditions
- Available in RTJ face for high-pressure sealing
- Low Maintenance Design with renewable trim
- Globally accepted API 6D design for pipeline use
- Suitable for horizontal or vertical flow (vertical flow upward)
| Material Type | Grades | Application Suitability |
|---|---|---|
| Carbon Steel | ASTM A216 Gr. WCB / WCC / LCB | General oil & gas, water, power |
| Alloy Steel | ASTM A217 Gr. WC6 / WC9 / C5 / C12 | High temp, steam, power plants |
| Stainless Steel | ASTM A351 Gr. CF8 / CF8M / CF3 / CF3M | Corrosive media, refineries |
| Duplex Steel | ASTM A995 Gr. CD3MN / CE3MN | Offshore, seawater service |
| Bronze | ASTM B62 / B148 Gr. C95800 | Marine & brine applications |
| Special Alloys | Monel, Inconel, Hastelloy (on request) | Highly corrosive media |
