Buy Netfim Control Valves here. Automate your irrigation or fertigation system using premium quality Netafim globe valves. Netafim globe valves are based on a compact design with only one moving part, resulting in years of trouble-free performance. The bodies are constructed from nylon material that resists chemicals, shocks, heat and ultra violet light. The 24 VAC solenoid turns the valve off and on based on commands from a controller, but also subject to a manual override that can be used to turn flow off and on at the valve. The 3/4" to 2" range can be used with a wide range of irrigation zones ranging from less than 5 GPM to over 150 GPM.