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Kirloskar CI Reflux Valve (NRV) is a non-return (check) valve designed to allow fluid flow in one direction and prevent backflow in pipelines. It is widely used in water supply, pumping systems, and industrial applications to protect equipment like pumps from reverse flow damage.
🔧 Key Features
- Cast Iron (CI) Body – strong, durable, and corrosion-resistant
- Non-Return Function – prevents reverse flow and protects pumps
- Swing Type / Lift Type Design – automatic operation without manual control
- Low Head Loss Design – smooth flow with minimal resistance
- Leak-Tight Sealing – ensures reliable shut-off and long service life
- Flanged Ends – secure and easy installation in pipelines
📏 Specifications
- Size Range: approx. 40 mm to 700 mm (single door type)
- Larger sizes available up to 1500 mm (multi-door type)
- Pressure Rating: PN 0.6 / PN 1.0 / PN 1.6
- Temperature Range: up to 45°C (water applications)
- Standards: IS 5312, IS standards compliant
⚙️ Construction Materials
- Body: Cast Iron
- Disc: Cast Iron / Stainless Steel
- Seat: Bronze / Gunmetal / Rubber lined
- Hinge Pin: Stainless Steel
⚙️ Working Principle
- Fluid flows in forward direction → disc opens automatically
- When flow reverses → disc closes instantly
- Prevents backflow, water hammer, and pump damage
⚙️ Applications
- Water supply & distribution systems
- Pump discharge lines
- Irrigation systems
- Sewage & drainage pipelines
- Power plants & industrial utilities
✅ Advantages
- Automatic operation (no manual control)
- Protects pumps and equipment from reverse flow
- Low maintenance and long service life
- Suitable for large diameter pipelines
- Helps reduce water hammer effect
⭐ Conclusion
Kirloskar CI Reflux NRV Valves are highly reliable for backflow prevention and pipeline safety, making them a preferred choice in water systems, industrial pipelines, and pumping applications due to their durability, efficiency, and robust design.