Foot Valve (with Strainer)
Foot Valves are installed at the bottom of pump suction lines to prevent pump de-priming when the pump stops. It includes an integrated heavy-duty strainer screen to filter out large debris that could damage pump impellers.
Introduction
GM Dalui Foot Valves are installed at the bottom of pump suction lines to prevent backflow and maintain pump priming when shutdown. They feature an integrated screen filter to protect downstream pumps.
Key Features
- Combined non-return valve and high area strainer in a single unit.
- Low head loss design optimizes pump energy efficiency.
- Strainer screen flow area is minimum 3 to 4 times the nominal pipe area.
- Durable copper alloy or stainless steel seating rings.
- Easy to dismantle and clean the screen filter.
Technical Specifications
| Design Feature | Standard Parameters / Range Options |
|---|---|
| Nominal Size Range | Up to 600 mm |
| Manufacturing Standards | IS 4038 |
| Material of Construction (MOC) |
|
| Pressure Ratings | 1.0 / 1.6 / 2.0 / 2.5 / Class 150# / 300# / 800# |
| Modes of Operation | Automatic Non-Return (Lift type / Swing type) |
| End Connections | Flanged |
| Application Media | Pumping suction lines, agricultural lift irrigation, well pumping installations. |
Application & Usage of Foot Valve (with Strainer)
Agricultural Lift Irrigation
Keeps suction lines filled in well systems and open pond pumps to allow instant priming during starts.
Municipal Sump Wells
Maintains raw water pumping prime in water treatment intake wells.
Mining and Silt Pumping
Filters large debris and gravel from entering suction pipes, protecting costly pump impellers.
Types of Suction Foot Valves
Standard Foot Valve
Features a mesh strainer and spring-loaded lift disc mechanism, used at the inlet of a pump to maintain prime. Size Range: 26-600 mm.
Lift Check Foot Valve
Features a heavy-duty sliding check disc that operates automatically, preventing suction loss in municipal pump wells.
Ball Check Foot Valve
Utilizes a rubber-coated ball that lifts and reseals automatically, perfect for sewage or slurry suction loops.
Certificates & Inspection
All valves are subjected to rigorous hydrostatic shell and seat pressure testing in accordance with standard codes (e.g., API 598 / IS 14846) prior to delivery.
- Physical dimension and wall-thickness checks
- Hydrostatic seat and shell test validation
- Manufacturer Test Certificate (MTC) and third-party inspection (SGS, TUV, RINA, IRS etc.) available
- Epoxy powder coating inspection (DFT test)
Quality Assurance
GM Dalui & Sons Pvt. Ltd. is an ISO 9001:2015 certified manufacturer. Our commitment to safety, reliable sealing, and long service life is backed by rigorous material inspection, ultrasonic wall thickness checks, and design calculations.
We customize flow control systems to meet specific requirements for municipal waterworks, agricultural pumping wells, chemical distribution loops, and thermal power plant grids.