311A Valves 311A Valves 311A Valves

311A Series


¾"  and 1" Plastic Models
Electric Anti-Siphon

The Irritrol® 311 Series offers a comprehensive package of performance-enhancing features. Beginning with the reliability of a leak-proof, double-beaded, nylon-reinforced Buna-N diaphragm, the strength of glass-filled nylon and the expanded range of a maximum working pressure rating of 150 psi, the 311 Series’ list of features easily outdistances the competition. Compatibility with the OmniReg® modular pressure regulator make them the industry’s only anti-siphon valves with a pressure regulation option. Additional features include an upgraded bonnet design, a self-cleaning metering system for dirty water applications and a captive plunger solenoid. Plus, the actuator module is removable as a single unit with the diaphragm and internal components held in place, which means no more lost diaphragm screws and springs during installation.

Key Features

  • Upper body and air-vent cap constructed of glass-filled nylon
    Provides long-term performance
  • Rugged, double-beaded nylon-reinforced Buna-N diaphragm
    Ensures a leak-proof seal
  • Internal and external bleed (flush mode)
    Manual operation
  • Accepts OmniReg modular pressure regulator
    Ensures consistent performance
  • Externally removable self-cleaning metering system
    Ensures consistent performance in recycled-water applications


  • Flow range: 1-30 GPM
  • Pressure range: 10-150 psi
  • Operating temperature: up to 130° F


  • Solenoid: 24 V ac
  • Inrush volt-amp: 24 V ac-9.6 VA
  • Inrush current: .4 amp
  • Holding volt-amp: 24 V ac-4.8 VA
  • Holding current: .2 amp

Models & Dimensions

Model Description
311A-.75 ¾" flow control, internal bleed
311A-1 1" flow control, internal bleed


  • 311A-.75: H: 8 1⁄2”, W: 3 5⁄8”, L: 6”
  • 311A-1: H: 8 1⁄2”, W: 3 5⁄8”, L: 6”


Loss Data


  • OmniReg® 5-30 psi regulator (OMR-30)
  • OmniReg 5-100 psi regulator (OMR-100)
  • Recycled-water solenoid kit (RW60-KIT); purple solenoid with purple warning tag
  • DC latching solenoid (DCL)
    Note: Maximum pressure for a valve that utilizes latching solenoid is 120 psi.
  • Weatherproof gauge (SPK-100)

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