Lift Check Valve – Function, Features & Applications
Lift Check Valve – Function, Features & Applications
The lift check valve is a type of non-return valve (NRV) that allows flow in one direction and automatically prevents reverse flow in pipelines. It is commonly used in water, oil, gas, and steam systems where backflow can cause system inefficiency or damage. This valve operates by lifting a disc or piston off its seat under forward flow and allowing it to settle back when flow reverses.
How Does a Lift Check Valve Work?
When fluid flows in the correct direction, the pressure lifts the valve disc vertically off its seat, enabling flow. If the flow slows or reverses, gravity (or spring action) forces the disc back onto the seat, sealing the passage and stopping backflow. Lift valves work best in horizontal pipelines and require steady pressure to function correctly.
Components of a Lift Check Valve
- Body: Houses all internal parts and connects to the pipeline.
- Disc or Piston: Moves vertically to allow or block flow.
- Seat: Provides a surface for the disc to seal against.
- Cover: Allows access to internal components for maintenance.
- Spring (optional): In some designs, used for faster shutoff response.
Technical Specifications
| Parameter | Details |
|---|---|
| Valve Type | Lift Type NRV (Vertical Disc Movement) |
| Sizes Available | 15mm to 200mm |
| Material | Cast Iron, SS304/316, Bronze, Forged Steel |
| Pressure Rating | PN10, PN16, Class 150 to Class 300 |
| End Connection | Flanged / Screwed / Socket Weld |
| Standards | IS 5312 / API 602 / BS 1868 |
| Installation Position | Horizontal (Preferred) |
Advantages of Lift Type NRV
- Excellent sealing in high-pressure systems
- Simple construction, easy to maintain
- Available in small to large sizes
- Suitable for clean fluids (not slurries or viscous media)
Common Applications
- Boiler feed lines
- Water distribution systems
- Condensate return in steam systems
- Industrial oil pipelines
- Compressed air systems
Top Indian Manufacturers
- Udhhyog – Flanged lift NRVs in CI, SS, bronze | Visit Website
- Kartar Valves – Forged steel and CI lift check valves
- Zoloto Valves – Bronze and gunmetal NRVs
- Sant Valves – High-performance steam check valves
- Hyper Valve – Industrial grade SS and forged NRVs
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Contact Udhhyog
Looking for lift check valves for water, steam, or oil lines? Udhhyog supplies a full range of NRVs with quick dispatch, material certification, and custom size options. We serve OEMs, contractors, and industrial users across India.
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