Valves come in two styles: Anti-siphon or straight globe valves.
Valves come in two styles: Anit-siphon or straight globe valves. Building
codes often require the use of above ground anti-siphon valves to prevent the back flow of water. Irritrol 2700 Series Anti-siphon valves feature rugged leak proof diaphragms, internal and external manual bleed, stainless steel metering systems, and heavy-duty UV resistant PVC construction. They have flow control for precise flow adjustment, manual shutoff and a built-in atmospheric vacuum breaker for optimum performance and reliability in residential applications. They have a flow range of .25 to 30 GPM and a pressure range of 10-150 psi. Inlet and outlet are threaded. Five year warranty.