Designed specifically for Orbit L-Series valves only - Compatible with In-Line L-Series and Anti-Siphon L-Series valves (NOT for 100-series, Jar Top, or other valve types) 24V professional-grade construction - Stainless steel rod, copper core, insulated lead wires, and waterproof resin casing for reliable outdoor use Easy DIY installation in minutes - Simply unthread old solenoid, thread in new one, and reconnect wires - no special tools required Compatible with major irrigation controllers - Works with Orbit, Hydro-Rain, and other 24VAC sprinkler system controllers Genuine Orbit replacement part - Engineered specifically for L-Series valve 1-inch threading and dimensions, not a universal fit-all solenoid