APCO Air/Vacuum Valves & Combination Air Valves (AVV)
网页The Air/Vacuum Valve expels large quantities of air when filling and admits air to relieve vacuum when draining. The Air Release Valve prevents small air pockets from accumulating at the high points of the pipeline that can restrict flow.
Air / Vacuum Clean Water Valves | Vacuum Valve - Val Matic
网页Air/Vacuum Valves, often referred to as "large orifice valves", are used to allow large volumes of air to be exhausted from or admitted into a water pipeline as it is being filled or drained. When draining the pipeline, the float drops, allowing air to enter, preventing loss of pressure, possible pipeline collapse and damaging water column ...
Air Release Valves, Vacuum Valves, Air Vacuum Valve
网页A Vacuum Valve, or Air Vacuum Valve is a safety valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, in order to prevent collapse. Flomatic Valves is a manufacturer and global distributor …
AIR & VACUUM VALVES | Crispin
网页Crispin’s original Air & Vacuum Valves, the A and AL Series are designed to exhaust large quantities of air when filling pipelines, and to allow air to re-enter pipelines when draining to prevent collapse due to vacuum formation.
网页Air valves are installed on a pipeline to exhaust air and admit air to prevent vacuum conditions and air‐related surges. The AWWA Air Valve Manual recommends Air Valves at the following points along a
Combination Clean Water Valves | Air Valves - Val Matic
网页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.
网页The function of an Air/Vacuum Valve is to protect a pipeline from damage. Air/Vacuum Valves expel large quantities of air when filling the pipeline and admit large quantities of air to relieve a vacuum when draining the pipeline.
COMBOAIR® Universal Air Release & Vacuum Valve | Flomatic
网页The COMBOAIR® universal air release valve performs the functions of both a pressure air release valve and an air & vacuum valve in one compact design that reduces cost and saves space.
Air Valves - DeZURIK, Inc.
网页Air Vacuum Valves: Air/Vacuum Valve are used to protect pipelines from damage by expelling or admitting large quantities of air. Air/Vacuum Valves expel air when filling the pipeline and admit air to relieve a vacuum when draining the pipeline. DeZURIK manufactures two main styles of APCO Air Vacuum …
VACUUM RELIEF AIR VALVES | Crispin
网页Available in both potable and wastewater configurations, the VR and SVR Valves allow air to enter a system when a negative pressure occurs, but prevents air from being released under positive conditions, except through an optional small orifice Air Release Valve. NOMINAL INSIDE DIAMETER: 3”-36” Sizes Available.