Air Vacuum Relief Valves

Available Models		Part	Price
1 review	1/2” MNPT Air Vacuum Relief Valve	A141	$6.48 ea.
	1" Continuous Air Vacuum Relief Valve	A157	$13.59 ea.
	2” Continuous Air Vacuum Relief Valve	A195	$107.07 $101.72 clearance item 1 left
	1" Kinetic Air Vent & Vacuum Relief Valve	A158	$11.77 ea.
	2" Kinetic Air Vent & Vacuum Relief Valve	A159	$39.89 ea.
	3/4" Continuous Acting Vacuum Guard Air Vent	A186	$139.99 ea.
	1” Continuous Acting Vacuum Guard Air Vent	A190	$139.99 ea.

Description
Specifications
Features
Instructions

The Drip Store’s line of air vacuum relief valves provides vital protection to an irrigation system’s main line and lateral pipes. The air vacuum relief valves allow air to escape during system startup, preventing air restriction or water hammer caused by large air masses moving though the pipe, and preventing explosive conditions from air compressed by water. The air vacuum relief valves also allow air to enter the pipe line during valve closure or when the system is shut down, minimizing the collapse of main line and sub-main pipes, back siphonage of dirt into the drip emitters, and water hammer caused by sudden reversal of flow.

Available

A157, A195, A190 : 1" and 2" NPT connections
A186 : 3/4" and 1", 1-1/2" and 2" NPT female inlet and outlet

Durable

A157, A195, A186, A190 : weather resistant and non-corrosive reinforced polyamide

Inlet size

A158 : 1" male pipe thread
A141 : 1/2" male pipe thread
A159 : 2" male pipe thread

Maximum pressure

A141, A195 : Up to 100 PSI

Minimum operating pressure:

A141, A195 : 7 PSI

Seals pressure

A158, A159 : Minmum of 5 PSI
A157, A195, A186, A190 : at 5 PSI

UV protected

A190 : manufactured from superior durable plastics for long life against degradation

Working pressure

A157, A186 : 5-100 PSI
A195 : 5-175 PSI
A158 : Up to 100 PSI
A159 : Up to 150 PSI

Allows air to flow out from the irrigation system when filling a line, also allows in a large amount of air when the system is shut off and the lines are drained

Available size: 3/4"

Available sizes: 3/4" and 1"

Available sizes: 3/4", 1", 1-1/2" and 2"

Dual acting air release & vacuum relief valve

Eliminates vacuum and prevents contaminates from debris being drawn into the drip line

Ensures maximum protection of the irrigation system with proper sizing and placement

Extracts air and relieves vacuum continuously as water flows through the pipes, filter manifolds and other parts of the irrigation system

Helps prevent clogging of the system

Non-corrosive and durable weather resistant material, to withstand the toughest elements

Prevents airlocks in the pipe line which could block water flow

Promotes full capacity and utilization of the irrigation pipeline

Saves pipes and equipment from harmful water hammer effects

Specially designed double seal feature with its low density float makes the valve completely watertight even when the pipe is highly pressurized or emptied, no matter how slowly these operations are carried out

Threaded outer elbow features an inner filter to prevent outside objects from entering the air relief valve

UV protected bright colored top allows easy visibility

A141 : Installation for Air Relief Valve A141
To install an air relief valve, ensure you have a 17 mm x 1/2" FNPT tee at the start of your system (for 1/2" .700 OD drip tubing systems, use adapter tee LF307 in conjunction with coupler A134; for 1/2" .620 OD drip tubing systems use adapter tee LF306 in conjunction with coupler A134). The air relief valve screws into the 1/2" FNPT of the barbed tee. The air relief valve connection is normally located near the pressure regulator assembly as this is often the highest point in the drip system or the center of the line. It is important to install the air relief valve at the highest point of the system layout to allow it to work correctly.
A157 : Installation for Air Relief Valve A157
To install an air relief valve, ensure you have a 1" FNPT tee at the highest point along the pipeline or upstream of the valve manifolds. The air relief valve should thread into a 1" male pipe thread. It is important to install the air relief valve at the highest point of the system layout or near the pump and filtration stations to allow it to work correctly. If your water inlet and filter are lower than the irrigated landscape, ensure your air relief valve is suitably located at the highest point.
A195 : Installation for Air Relief Valve A195
To install an air relief valve, ensure you have a 2" FNPT tee at the highest point along the pipeline or upstream of the valves manifolds. The air relief valve should thread into a 2" male pipe thread. It is important to install the air relief valve at the highest point of the system layout or near the pump and filtration stations to allow it to work correctly. If your water inlet and filter are lower than the irrigated landscape, ensure your air relief valve is suitably located at the highest point.
A158 : Installation for Air Vacuum Relief Valve A158
To install an air relief valve, ensure you have a 1" FNPT tee at the highest point along the pipeline, upstream of the valves manifolds, near the pump or filtration stations. The air relief valve should thread into a 1" male pipe thread. It is important to install the air relief valve at the highest point of the system layout or near the pump and filtration stations to allow it to work correctly. If your water inlet and filter are lower than the irrigated landscape, ensure your air relief valve is suitably located at the highest point.
A159 : Installation for Air Vacuum Relief Valve A159
To install an air relief valve, ensure you have a 2" FNPT tee at the highest point along the pipeline, upstream of the valves manifolds, near the pump or filtration stations. The air relief valve should thread into a 2" male pipe thread. It is important to install the air relief valve at the highest point of the system layout or near the pump and filtration stations to allow it to work correctly. If your water inlet and filter are lower than the irrigated landscape, ensure your air relief valve is suitably located at the highest point.