Irritrol 311A-75 3/4" Electric Anti-Siphon Valve with Flow Control

The Irritrol 311A-75 is a 3/4" electric anti-siphon irrigation valve engineered for reliable, long-term performance in residential and light-commercial systems. It pairs a leak-proof, nylon-reinforced EPDM diaphragm with a glass-filled nylon upper body to withstand frequent cycling and harsh outdoor conditions.

• Flow control and removable tamper-resistant handle for precise flow adjustment and manual shutoff.
• Internal and external bleed (flush mode) for easy manual operation and maintenance.
• Accepts OmniReg® modular pressure regulator for field-installable pressure control (optional accessory).
• Self-cleaning, externally removable metering system suitable for recycled or reclaimed water and dirty-water applications.
• 24 VAC encapsulated solenoid with captive plunger; electrical specs: inrush ~0.4 A (9.6 VA), holding ~0.2 A (4.8 VA).
• Pressure range 10–150 psi and flow range 1–30 GPM; dimensions H 8½" × W 3 5/8" × L 6".
• Durable construction with stainless-steel hardware, Buna-N seat seal and a 5-year warranty for added assurance.

Designed for straightforward installation and service, the actuator module and diaphragm lift out together as a single unit to reduce lost parts and speed maintenance. See the sell sheet and installation guide for full specifications, pressure-loss charts, optional accessories (OmniReg regulators, recycled-water solenoid kit), and installation notes.