DN 100 Cast Steel Foot Valve

DN 100 Cast Steel Foot Valve

The bottom valve is also referred to as a check valve, and is a low-pressure flat-plate valve which is used for ensuring that the liquid flows in one-way in the suction pipe, and the normal operation of the pump can not return to the water source box when the pump stops working for a short time, so that the liquid is filled in the water-absorbing pipe to facilitate the start-up of the pump.

Bottom valve is foot valve or bottom valve in English. In fact, it is a kind of check valve, which plays a role of preventing backflow of water. The bottom valve can be divided into plastic bottom valve and metal bottom valve according to the material, and can also be divided into ordinary bottom valve and backwash water flow bottom valve. Bottom valve is mainly applied to the mechanical equipment for slurry treatment such as water pump. Generally, the bottom valve is installed at the bottom end of the underwater suction pipe of the water pump to prevent the slurry from flowing back.

1. Material Of Main Parts

Body	Cast iron/Ductile iron/WCB/CF8/CF8M
Disc	Cast iron/Ductile iron/WCB/CF8/CF8M
Disc ring	NBR/EPDM
Spring	SS304 SS316
Screen	Cast iron/Ductile iron/WCB/CF8/CF8M

2. Design 

A. Face to face is according to ISO STANDARD
B. Flange drilled is according to ANSI B 16.5, DIN, JIS B2220

3. Test by API 598

Working pressure	PN10/PN16	Class 125/150
Shell pressure	PN15/PN24	300 PSI
Seat pressure	PN11/PN17.6	200 PSI

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