Welcome Page Body
Welcome to the valve's support section. Hunter has a full valve line-up for different irrigation system designs, but most valves have the same fundamental functionality. In this section, you will find information on installation, maintenance, and troubleshooting a Hunter valve.
Section Menu
Valve Overview
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Valve Operation
Water enters the valve from the system main line and exerts a force against the center of the valve’s diaphragm. A small orifice in the diaphragm allows the water to flow through
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Choosing A Valve
When determining what might be the best valve for your particular needs, it is a good idea to keep these considerations in mind:Choose a valve that will operate at the pressure
Valve Installation
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Installing a Hunter Valve
We recommend that you follow these guidelines when installing your valves: Valve Orientation Each valve has an inlet and an outlet. An arrow is molded into the body of each
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Installing PGV-ASV
All Hunter Industries Anti-Siphon Valves should be installed above ground and at least 6 to 12 inches above the highest sprinkler to prevent back pressure or drainage.
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Drip Zone Control Kit - Installation and Maintenance
PCZ/ACZ Drip Control Zone Kits: These pre-assembled kits bring together the popular PGV valve with both a filter and a pressure regulator, providing you with a complete control
Manual Operation
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Manual Operation
There are two ways to bleed a zone valve for manual operation:One way is to simply turn the solenoid (the black cylinder with 2 wires) counter-clockwise a 1/4 to 1/2 turn. To shut
Adjustment
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Adjustment
The flow control knob works very similar to a hose bib or gate valve as its main function is to either fully allow or restrict the amount of water passing through the valve.The
Valve Cleaning
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Servicing Jar-Top Valves
Here are some tips for valve repair.
Accu-Sync
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Accu-Sync - Pressure Testing
The Accu-Sync compares the pressure on the top side of the diaphragm (main water supply pressure) to the downstream pressure. Pressure is adjusted by the unit forcing the
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Installing the Accusync
Regulating pressure saves water and extends the life of the irrigation system. Water savings is achieved by operating each zone at the best pressure for that equipment and
Troubleshooting
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Slow Closing Valve
Most irrigation valves are designed to close within 10 to 20 seconds of the solenoid deactivating. The most common reason why a valve would close slower than normal is that there
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Valve Not Closing
There are two reasons why your sprinklers would continue running: It's possible your valves have been opened manually. You'll need to locate your valve box(es) and turn the
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Valve Not Opening
There are several reasons why a valve might not open. Please review the following checklist: Water Turned OffInsufficient VoltageClogged Solenoid Exhaust PortsStation Not
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External Valve Leak
A valve with an external leak can be a simple adjustment or may require further inspection. Review our simple checklist below. Crack in the body - This would require a valve
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PGV-ASV - Leaking
If water is leaking from the vacuum breaker portion, there could be debris in the anti-siphon poppet. This would prevent the valve from sealing completely. The cap can easily be
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JarTop - Leaking
The Hunter Jar-Top valve has two holes in the bonnet of the valve. The purpose of these two holes is to drain the water that could have collected around the diaphragm.
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Weeping/Leaking when valve off
There are two reasons why a sprinkler will leak water when the system is supposed to be off.The most common reason is called “Low Head Drainage”. "Low Head Drainage" occurs when
FAQs
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Adjustment
The flow control knob works very similar to a hose bib or gate valve as its main function is to either fully allow or restrict the amount of water passing through the valve.The
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Testing Voltage
Low voltage irrigation systems utilize a 24VAC electronic signal to initialize a valve's solenoid. Even though the system is lo voltage it is still always recommended a trained
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Wire Distance
Below is a chart indicating the maximum wire runs that can be used when installing Hunter AC solenoids and valves.
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Maximum Solenoids per Station
Hunter controller's contain multiple sized transformers, therefore each controller has different activation capabilities. Here is a list of recommended applications when using
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Acme vs NPT or BSP threads
NPT or National Pipe Thread has become a US standard for tapered threads used on pipe and fittings. The taper rate for all NPT thread is 1.6 mm. When torque is
Quick Coupler Valves
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Pressure Loss
Quick Couplers Pressure Loss in PSI Flow Model GPM HQ-3 HQ-33 HQ-44 HQ-5 5 0.8 1.0