1. Air Release Valve

While the system is flowing and under pressure, air release valves continually and automatically exhaust the small quantities of air that would otherwise collect at system high points. This ensures the system will remain free of trapped air (and sewage gases) thereby increasing system efficiency and reducing pumping cost.

2. Air Release & Vacuum Breaker Valve

It is two critical time in the operation of a pipeline.
During filling, air that occupies the empty pipe must be evacuated ahead of the incoming liquid in a
controlled and efficient manner so that surge and water hammer are minimized and liquid completely
fills the pipe. During draining, whether planned or unexpected, air must be admitted into the system
to replace the out flowing liquid to avoid excessive vacuum and possible pipeline damage.
Air release valve are designed to release accumulated air pockets from the system, while pressured
pipelines. Air pockets increase energy consumption because pumping operation will be at higher
water heads to overcome pressured air.
Air release valves are have function to protect high shock and surge pressure, water hammer and
liquid overflow from fresh or sea water pipelines.
PROSAVE's valve can provide low cast insurance to protect expensive maintenance cost of pipelines
and pump systems.

3.Combination Air Release & Vacuum Breaker Valve

Combination air valves are normally installed at high points where air would naturally rise ahead
of the incoming liquid during filling and collect during operation and/or where negative pressure
first occurs during draining. The large (air & vacuum) and the small (air release) orifices are both open during filling with the majority of the air is passes through the large orifice.
The rate at which air is discharged is a function of the differential pressure across the air &
vacuum valve. During filling, incoming water compresses the air in the “empty” pipe until the pressure
differential across the air valve is sufficient that air is discharged at the same volumetric rate as
water is entering the pipe.
After all the air has been purged, liquid enters the valve and lifts the floats and closes both
orifices.
While the large orifice remains closed, the small orifice reopens as necessary to release any air
that collects in the valve after it has closed. Should the internal pressure fall below atmospheric,
both orifices open to allow air to flow through the valve into the system at the same volumetric
rate at which the liquid is draining thus avoiding critical vacuum and damage to the pipe.

4.Vacuum Breaker Valve

- The KSVB is a spring loaded model, designed to handle under pressure with a minimum pressure
of -150mmW.C and maximum setting of -7,000mmW.C.
Body material are available in Aluminium, Carbon Steel, 304SS,316SS and Ni-Al Bronze with
various trims to suit induvidual requirements.
Sizes range from 50mm through to 300mm with ANSI 150lb FF flanges as standard. (Different
connections available on request).