Foot Valves

Materials Used

Uses

Types

Parts

A foot valve is a very widely demanded pipe valve, which is applicable in various industries. It is a kind of check valve fitted on the foot of a suction line to prevent backflow. A foot valve is placed in the water source below a surface pump. The basic function is to prevent water from flowing back down the pipe. In other words, it is a valve to allow the pump to pull water up but does not allow the water to flow back down. This helps in keeping the pipe full of water while the pump is not running. This kind of valve is available in a variety of shapes, sizes, and materials.

Buying tips Some factors to take into consideration are: Valve Features Standard Materials: Strong Non-Corrosive Materials Sizes Maximum Recommended Working Pressure Easy to operate Easy to install Durability Some other factors to consider are: Calculate or measure the capacity of your pump installation. For dirty water applications, always select the largest valve that will be operating in the area shown by the thicker line.

Materials used:

• Brass
• Plastic
• Aluminum
• Stainless Steel
• Carbon steel
• Cast iron
• Copper
• Nickel
• Rubber etc.

Uses of foot valves:

• They prevent the pump column from draining upon pump shutdown.
• They are widely applied to all kinds of pneumatic system.
• They are used in a suction line of the pumping system in a well.
• They provide a positive sealing action at both low and high pressures without slamming.

Types of foot valves:

Female threaded Foot Valve	Dual purpose threaded foot valve
Dual threaded foot valve	Suction Strainer

Parts of a foot valve:

1. Foot valve body
2. O-ring
3. Foot valve cover
4. Spring
5. Valve seat
6. Plunger assembly
7. Diaphragm
8. Plunger guide
9. Plunger
10. Operating lever
11. Bottom nut
12. Washer