Product overview

This valve is installed at the outlet of the pump or in the water distribution pipeline, which is used to remove the air accumulated in the pipeline to improve the service efficiency of the pipeline and the water pump. When negative pressure occurs in the pipeline, this valve quickly sucks in the outside air to prevent the pipeline from being damaged due to the negative pressure. Mainly used in water supply system, fire fighting and agricultural irrigation.

Product features

 1, sophisticated and advanced mechanical design, durable float, can prevent being destroyed and damaged by sudden water hammer.

 2. Before the water level rises to push the floating ball to seal the exhaust hole; Even if the velocity of compressed air reaches the speed of sound, the floating ball can remain at the bottom position.

 3. No arm or lever can prevent vibration and falling off.

 4. There are stainless steel sleeves outside the float ball to ensure that the float ball slides in the set guide rail.

 5. The rubber anti-collision pad at the bottom has the function of protecting the floating ball from collision during falling. Under negative pressure, the function of rapid drainage and suction can be achieved through the ingenious design of enough holes.

 6. As an optional component, the upper filter screen has the functions of safety protection and preventing insects or birds from entering.

 7. The inner and outer parts of the valve body are coated with epoxy resin, which can achieve a longer service life.

 8. The manufacturing standard conforms to GJ/T 217, BS EN 1074-3 and AWWA C512.

 9. Bore hole and size of flange conform to GB/T 17241.6, BSEN 1092, BS EN 558 and ANSI specifications.

Main outline connection dimensions