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Application:
This valve is suitable for petroleum, chemical, textile, printing and dyeing, metallurgy, mining, irrigation and drainage industries, such as the use of pumps, the valve is installed in front of the pump, is the ordinary bottom valve replacement products.
Features:
The valve is installed at a turning point in the pipe that is exposed to the water. Start water pump first to the suction pipe filled with liquid, so that the pump has enough suction, the liquid suction valve open the bottom valve, so as to carry out normal water supply operations, when the pump is stopped, the disc in the liquid pressure and gravity of the role of closure, to prevent the flow of liquid. This valve has small frictional resistance, simple installation and convenient maintenance. Good sealing performance.
Schematic diagram:

Nominal diameter(mm):DN40~DN600
Nominal pressure(Mpa):0.1~1.6MPA
Suitable temperature:≤80℃
Suitable medium: Water, sewage,oil, etc.
Type of sealing : soft sealing .
Type of control : automatic.
Material:grey cast iron, ductile cast iron,alloy cast iron, carbon steel,stainless steel, alloy steel.
Standard: GB, BS, ASME, JIS, DIN, EN, ISO and other country, also can be produced according to user’s requirements.