Flap Gate flap valve prevent water backflow

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Flap Gate flap valve prevent water backflow

Check-stop valve ,according to material , there are cast iron check-stop valve, steel check-stop valve, FRP check- stop valve. According to shape, there are square,round, pontoon flat,flat flap check-stop valve.Check-stop valve installed at the end of the drain pipe , prevent the external water flowing back.

Product details

According to the material of the flap valve, it can be divided into FRP flap valve, Steel flap valve, Cast iron flap valve and HDPE flap valve.

Below is the data sheet of flap valve of different materials.

Item	FRP flap valve	Steel flap valve	Cast iron flap valve	HDPE flap valve
Tensile strength	160-320 Mpa	380 Mpa	187 Mpa	21 Mpa
Specific strength	100-168	48.5	25.5	22
specific gravity	1.8-2.1	7.84	7.34	0.954
Corrosion resistance	Resist	No Resist	No Resist	Resist
Maintain and replace	General maintenance-free	make once corrosion prevention every year	make once corrosion prevention every year	General maintenance-free
Theftproof condition	Without recycling value	easy be stolen	easy be stolen	easy be stolen

FRP flap valve

Steel flap valve

Cast iron flap valve

HDPE flap valve

Application Scope：

Check-stop valve is used in water conservancy engineering system, municipal sewage engineering, urban flood control and drainage, sewage treatment plant, hydropower station, water supply plant, fish pond and so on. Applicable medium: water, drinking water, river water, sea water , domestic and industrial sewage water.

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