Combination Air Valves perform the functions of an Air/Vacuum Valve (exhaust large quantities of air on start-up, admits air on shut-down) and Air Release Valves (release air continuously during operation) to maintain system efficiency and prevent pipeline surges.
Able to release air at high flow rates.
No shut off due to negative pressure caused by high-speed airflow.
No airtight phenomenon: minimum air pressure doesn’t limit valves.
Air release can be as high as sonic speed.
The automatic air release function releases accumulated air from the system while it is under pressure.
High sensitivity: when negative pressure occurs inside pipelines, valves rapidly open to inhale large volumes of air and protect the pipelines from damage.
Floating ball and main disc are in stainless steel. This provides long service life, safety and reliability. Valves are able to stand and high pressure.