< >

Slient Check valve Wafer type

Check valve refers to the opening and closing parts of the circular disc and by its own weight and media pressure generated action to block the media flow back valve. Automatic valve class, also known as check valve, one-way valve, backflow valve or isolation valve. Disc motion is divided into lifting and swing. Lift check valves are similar in construction to globe valves except for the stem that drives the disc. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). Valve is opened when inlet pressure is greater than the sum of disc weight and flow resistance. On the contrary, the valve is closed when the medium flows back. Swing check valves have a disc that is tilted and rotates on its axis and work in a similar way to lift check valves. Check valves are often used as bottom valves in pumping units to prevent the backflow of water. Check valves are combined with globe valves to provide safety isolation. Disadvantages are large resistance, poor sealing when closing.

Contact Now

Product Details

Check valve refers to the hole and ultimate additives of the spherical disc and through its very own weight and media pressure generated movement to dam the media drift lower back valve. automatic valve beauty, also known as take a look at valve, one-manner valve, backflow valve or isolation valve. disc movement is split into lifting and swing. lift check valves are similar in creation to globe valves besides for the stem that drives the disc. the medium flows in from the inlet prevent (decrease facet) and flows out from the opening quit (better side).

Cast Iron Wafer Type Check Valve

Material:

The body materia: GG25,GGG40,GGG50

The disc material: DI/SS304/SS316/AL-BZ

The stem/spring material: SS416/SS304

The seat material:NBR/EPDM/VITON

Standard：

ANSI/JIS/DIN/BS

Usage：

They are used for pipe of transporting water with such medium as water sewage and seawater.It can avoid media flowing backwards and prevent damaging water hammer,guarantee the safety using of pipes.

Features:

1. The products are new structure .small and light weight

2. Reliable sealed,endurable open-close,erar-resisting,long life.

3. With less flowing resistance than old check valve and obvious enerfy-saving effects.

微信图片_20220122103640.jpg 微信图片_20220122103635.jpg

Technical Parameters:

Seal	18Bar	11Bar
Operating Temperature	-10℃~+120℃
Operating Environment	Ballast and bilge system Chemical processing
	Desalination plants Drilling rigs
	Drinking waterDry powder
	Food and beverage Gas plants
	HAVC Mining industry
	Paper industry Sand handling
	Seawater
	Sugar industry
	Thermo technical water treatment
	Waste water