Valves

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.

  • 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
  • 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
  • Installing a Hunter Valve
    Proper system design and placement of valves is an intricate part of a good irrigation design.  Before installing an irrigation valve ensure you have a good irrigation design that
  • 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.
  • 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
    There are two ways to bleed a zone valve for manual operation:
  • 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
  • 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
  • Slow Closing Valve
    Valve BonnetFlow Control handleBleed ScrewSolenoidDiaphragm Supprt RingDiaphragmDiaphragm SpringMost irrigation valves are designed to close within 10 to 20 seconds of the solenoid
  • Valve Not Closing
    The most common reason for a valve to remain on or weep is debris stuck in the valve.  New installations without proper flushing, recent mainline repair, or well water can cause
  • 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
  • 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
  • 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
  • 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.  
  • 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
  • Adjustment
  • Testing Voltage
    Irrigation systems utilize a 24VAC electronic signal to initialize a valve's solenoid. Even though the system is low voltage, it is still always recommended a trained professional
  • Wire Distance
    These tables are designed for quick reference and are set up to provide maximum wire runs, given the information at the bottom of the table. Maximum one-way distance in feet
  • Maximum Solenoids per Station
    Hunter controllers contain multiple-sized transformers. Therefore, each controller has different activation capabilities. Here is a list of recommended applications when using
  • Acme vs NPT or BSP threads
  • Pressure Loss
    Quick Couplers Pressure Loss in BarHQ Pressure Loss in Bar Flow    m³/hrHQ-3HQ-33HQ-44HQ-510.060.07  2.31.120.14  3.40.280.300.15 4.50.500.520.300.076.8  0.790.219.1   0.4311.4   0

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