Orbit 57280 — 3/4-Inch FPT Automatic Sprinkler Valve

What is it and what's it for?

It's the system's 'electric faucet': a controller sends it a 24-volt signal and this valve opens or closes on its own, letting water through or shutting it off to a section of the yard.

Real-world use cases

• At home: It's the part buried underground, one per irrigation zone (lawn, flower beds, vegetable garden), that your WiFi controller opens and closes on the schedule you set.
• In a business or workshop: A club or sports field needs dozens of these valves spread across the grounds, each controlling watering for one section — and picking the one with the most spare-parts stock means you won't be stuck if one breaks.

How to avoid buying the wrong one

• Confirm your installation's thread size (this one is 3/4-inch FPT) — not every valve uses the same size.
• It's 'normally closed' (doesn't let water through by default), the type used in 99% of residential systems — confirm yours isn't one of the rare 'normally open' setups.
• It doesn't need to match your controller's brand: any 24V AC valve works with any 24V AC controller.