Irritrol 2709PR 1" Anti-Siphon Manual Valve — Plastic with Built-In Vacuum Breaker & Flow Control

The Irritrol 2709PR Anti-Siphon Manual Valve is a 1" plastic irrigation valve with built-in atmospheric vacuum breaker, manual shutoff and flow control for dependable residential backflow protection.

The 2700 Series from Irritrol is engineered for everyday residential irrigation needs where safety, ease of operation and consistent flow control matter. This manual anti-siphon valve combines an atmospheric vacuum breaker to prevent back siphonage, a smooth manual operation with internal/external bleed for flush-mode control, and a wide operating range that handles from 0.25 to 30 GPM and pressures between 10 and 150 psi. It’s supplied ready-to-install with no assembly required and is suitable for a variety of sprinkler and drip layouts.

How does the 2709PR prevent backflow into my water supply?

The valve includes a built-in atmospheric vacuum breaker that stops contaminated water from being drawn back into the main when pressure drops. The anti-siphon design engages automatically and complies with typical residential backflow prevention needs without separate assemblies.

• Integrated atmospheric vacuum breaker eliminates need for extra backflow devices
• Automatic activation when pressure loss occurs
• Plastic body reduces corrosion risk compared to metal valves

Can I fine-tune flow for different zones and is the valve easy to operate manually?

Yes. The 2709PR provides precise flow control through its full metering system and a manual shutoff for quick isolation. Internal and external bleed (flush mode) make manual adjustments and purging straightforward during setup or maintenance.

• Full stainless-steel metering or patented floating metering for consistent adjustment
• Internal and external bleed ports for flushing and manual control
• Simple manual handle operation for on/off and flow regulation

What are the performance limits and installation considerations?

The valve operates across a broad flow and pressure range that covers most residential sprinkler and drip systems. It is a one-inch valve designed to mount above ground in locations where the vacuum breaker can remain exposed to the atmosphere, per typical anti-siphon valve installation requirements.

• Flow range: 0.25 to 30 GPM; Pressure range: 10–150 psi
• 1" inlet/outlet size for common residential piping and fittings
• Install above ground with vacuum breaker exposed for correct operation

What maintenance should I expect and how durable is the valve?

Maintenance is minimal: periodic inspection for debris and occasional flushing through the bleed ports keeps the valve operating reliably. The plastic construction resists rust and the metering components are stainless or a proven floating design for long-term consistent performance.

• No assembly required—ready to install out of the box
• Corrosion-resistant components lower long-term upkeep
• Easy access to bleed ports for seasonal flushing and troubleshooting

Who is this for: The Irritrol 2709PR is intended for homeowners, landscapers and contractors who need an uncomplicated, reliable anti-siphon solution for residential irrigation. Choose this valve when you require visible atmospheric backflow protection, simple manual control with metering precision, and durable, low-maintenance operation for sprinklers or drip zones.