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WALTER TAVV Cast Iron Threaded End Air Vent and Release Valve allows to vent the air inside pipelines while filling water networks. Due to its compact size, preferred specially for narrow location on the pipeline. is a special valve used to prevent negative pressure in the pipe caused by the transient pressure reduction wave. It is usually installed at a high point where the hydrodynamic pressure of the pipeline is low during normal operation, and the liquid column separation may occur during the transient flow process. Air is sucked in when the pressure in the pipe is lower than atmospheric pressure, and air is discharged when the pressure in the pipe rises above atmospheric pressure. During the exhaust process, the valve can automatically close when the pipe is filled with liquid, and the liquid is not allowed to leak into the atmosphere.
hylene, increase the corrosion resistance, hence increases service life.
2.Discharge air more flexible
3.Preventing of the water hammer
4.Discharge the air slowly
6.Small volume, light weight, small exhaust flow
7.Long service life
1.Design: BS EN1074-4
2.Female thread to NPT or BSPT PN10/16
3.Size: DN15 -50
4.Working Temp. : 0 ℃ ~ + 80 ℃
5.Inspection & testing: EN 12266-1:2012
1，Air Vent Valve, Air Release Valve, Air Valve.
2，Thread End Single Ball Air Vent Valve, Cast Iron Body
3，DN15 -50, PN10/16. NPT or BSPT Female .
· Water projects
· Real estate
· Water treatment industry
· Power plant
· Pump station