Sprinkler System Parts Explorer
One Florida sprinkler zone: the valve in its box, the pipe out to the heads, and the timer that runs it. Tap a part to see what it does, the signs it is going bad, and the replacement we stock.
X-ray
What’s going on?
All 12 parts
Shop all underground irrigation partsTools for the job
Not sure which one you need?
Bring the old part into our Cape Coral or Fort Myers store — we’ll match it on the spot. Most repair parts are in stock, or order online for free in-store pickup.
Sprinkler Valve & Heads parts guide
Valve Box & Lid
The green plastic box set flush with the lawn that keeps dirt off the valve and lets you get to it.
Signs it’s failing: Cracked or missing lid; Box full of dirt or fire ants; Mower keeps catching the edge.
Zone Valve
Opens and closes water to one zone when the timer tells it to. Inline valves live in a box; anti-siphon valves stand above ground.
Signs it’s failing: Cracked body or bonnet; Leaks at the glue joints; Still weeps after a new diaphragm.
Solenoid
The black cylinder on top of the valve. 24-volt power from the timer pulls its plunger and lets the valve open.
Signs it’s failing: Zone never comes on; Clicks but no water; Reads open or shorted on a multimeter.
Diaphragm
The rubber seal inside the valve that actually stops the water. Pressure on top holds it shut until the solenoid bleeds it off.
Signs it’s failing: Zone won’t shut off; Heads in one zone dribble all day; Torn or sand-packed rubber.
Flow Control & Bleed Screw
The handle on top throttles how far the valve opens; the small bleed screw lets you run the zone by hand without the timer.
Signs it’s failing: Zone runs weak even though other zones are fine; Valve stays on after a manual test; Stripped or broken handle.
Waterproof Wire Connectors & Zone Wire
Gel-filled wire nuts join the solenoid leads to the multi-strand zone wire that runs back to the timer.
Signs it’s failing: Green, corroded copper in the box; Zone works intermittently; Nicked wire from edging or digging.
PVC Pipe & Fittings
The rigid PVC mainline and lateral pipe plus the glued tees, elbows and couplings that carry water from the valve to each head.
Signs it’s failing: Soggy spot or sinkhole over the line; Cracked fitting after a root or mower hit; Low pressure on every head in the zone.
Funny Pipe (Swing Pipe)
Flexible black tubing from the PVC tee to the head, so a mower or car tire bends it instead of snapping the fitting.
Signs it’s failing: Water bubbling up beside a head; Barb fitting pulled out; Crushed or kinked line.
Pop-Up Spray Head
The body in the ground with a spring-loaded stem that pops up when the zone runs and drops back flush when it stops.
Signs it’s failing: Geyser — cap or body broken off; Stem stuck up or stuck down; Leaks around the cap when running.
Spray Nozzle
Screws on top of the pop-up stem and sets the pattern (quarter, half, full or adjustable) and the throw distance.
Signs it’s failing: Misting instead of spraying; Uneven or dry patches; Pattern hits the house or driveway.
Rotor Head
A gear-driven head that throws a single stream back and forth across larger areas — 20 to 45 feet.
Signs it’s failing: Stops rotating; Stuck on one spot; Won’t retract.
Controller / Timer
The wall-mounted timer that sends 24 volts to each zone valve on schedule.
Signs it’s failing: Blank display; Zones run at the wrong times; One zone won’t fire but the valve tests good.