The Hunter PGV 1" AC Valve with Anti-Siphon and Flow Control (PGV-ASV) is the ultimate solution for residential and commercial irrigation zones requiring stringent backflow prevention. Redesigned to be the toughest valve in its class, it features an ultra-durable 6-bolt bonnet constructed from glass-reinforced nylon and non-corroding, UV-resistant PVC. By combining a reliable 24 VAC valve with a built-in atmospheric vacuum breaker, you save both time and money by eliminating the need to install a separate backflow preventer on the zone.
Perfectly engineered for regulating water flow into 1/2" Mainline Tubing systems, the integrated flow control dial allows you to precisely tune the pressure output to prevent sprinkler misting or blown-out drip emitters. A rugged, double-beaded leak-proof diaphragm ensures trouble-free performance year after year, while both internal and external bleed options make manual activation incredibly simple.
Detailed specifications for your zone planning.
| Specification | Details |
|---|---|
| Operating Flow Range | 0.2 to 40 Gallons Per Minute (GPM) |
| Operating Pressure Range | 20 to 150 PSI |
| Inlet / Outlet Size | 1" Female Pipe Thread (FPT) |
| Solenoid Power | 24 VAC (Standard hardwired controllers) |
| Max Temperature Rating | 150° F |
Follow these steps to safely plumb and wire your PGV-ASV valve.
Step 1: Check Your Height (Crucial)
Anti-siphon valves must be installed above ground. Mount the valve a minimum of 6 to 12 inches higher than the highest sprinkler head or drip emitter on that specific irrigation zone.
Step 2: Plumb the Valve
Using Teflon tape, thread your 1" PVC male adapters into the inlet and outlet ports. Ensure the directional arrows on the valve body align with the direction of the water flow.
Step 3: Connect the Wires
Connect one wire from the solenoid to your controller's common wire, and the other solenoid wire to the specific station wire. Secure all connections using weatherproof wire nuts.
Step 4: Adjust the Flow
Turn the water source on and activate the zone manually. Rotate the central flow control handle to dial in the perfect pressure and volume for your downstream emitters.
What does an anti-siphon valve do?
An anti-siphon valve combines a standard irrigation valve with an atmospheric backflow preventer. It stops contaminated water from being sucked back into your clean household drinking water supply if a sudden loss of system pressure occurs.
It is a critical safety device required by many local building codes for outdoor irrigation systems.
Can I bury this anti-siphon valve underground in a box?
No. Anti-siphon valves must be installed above ground, typically 6 to 12 inches higher than the highest sprinkler head or drip emitter in the entire zone to function correctly.
If submerged or buried, the atmospheric vacuum breaker will fail, posing a serious contamination risk to your water supply.
How do I adjust the flow control on this Hunter valve?
Turn the central flow control handle on top of the valve to manually increase or restrict the volume of water passing through. This helps prevent misting and balances zone pressure.
Can I use this with a battery-operated timer?
Out of the box, this includes a 24-volt AC solenoid for plug-in controllers. To use a battery-operated timer, you must replace the AC solenoid with a compatible DC latching solenoid.
The valve body is fully compatible with Hunter DC latching solenoids for easy conversion.
Why is it important to install anti-siphon valves before planting my summer garden?
As you begin heavy summer fertilizing and pest control in mid-May, the risk of chemical runoff pooling around your emitters increases. Installing an anti-siphon valve now guarantees those hazardous lawn chemicals cannot backflow into your home's drinking water.
Securing your backflow prevention before the intense watering and feeding season begins ensures a safe, healthy water supply for your family all summer long.
Before purchasing, please verify your system design:
Ensure a professional, watertight valve installation with these essential accessories:
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