Plumb a residential or light-commercial irrigation zone straight into 1 in. Schedule 40 PVC without a thread adapter, a union, or a third fitting. The Irritrol® 2400S is the slip-by-slip member of the 2400 Series — a 1 in. globe-style solenoid valve that solvent-welds inline, draws from any 24 VAC controller, and pops off its bonnet for diaphragm service without cutting pipe. It’s the workhorse residential valve Irritrol has been shipping since the 1990s, in the configuration that’s fastest to install when you’re running PVC anyway.

Why Irrigation Pros Pick the 2400S

• Slip-by-slip sockets — solvent-weld straight into 1 in. PVC mainline and zone runs, no fittings or transitions required
• Threaded bonnet design — pop the cap to service the diaphragm and spring without removing the valve body or touching the glued joints
• Full stainless-steel metering system — consistent flow and shutoff across the .25–30 GPM range
• Heavy-duty PVC body, glass-filled polypropylene bonnet, stainless steel internals — corrosion- and UV-resistant for buried or above-ground installs
• Double-beaded Buna-N diaphragm — leak-proof seal that handles dirty residential water without nicking
• Internal and external bleed — flush mode for manual zone testing; turn the screw CCW to open the valve without energizing the solenoid
• Encapsulated 24 VAC solenoid with captive hex plunger — standard inrush / holding figures, works with every modern residential and commercial controller
• 5-year manufacturer warranty

Where It Shines

• New-construction residential irrigation runs in 1 in. PVC — slip ends are faster than threading for production crews
• Zone-by-zone retrofits where the existing PVC valve box is already glued and a threaded replacement would mean reworking the manifold
• Light-commercial properties on municipal water where 10–150 PSI is the normal operating window
• Anywhere a service tech wants to swap a diaphragm without cutting pipe — the threaded bonnet is the whole point of this family

Specifications

• Model number: 2400S
• Type: 1 in. globe solenoid valve, slip-by-slip (1 in. PVC socket inlet × 1 in. PVC socket outlet)
• Body material: heavy-duty, corrosion- and UV-resistant PVC
• Bonnet: glass-filled polypropylene, threaded for field service
• Metering system: full stainless steel
• Diaphragm: double-beaded Buna-N
• Solenoid: encapsulated, injection-molded, 24 V ac with captive hex plunger
• Holding current: 0.2 amp (0.24 A per manual)
• Holding power: 4.8 VA at 24 V ac (5.75 VA per manual)
• Inrush current: 0.4 amp (0.48 A per manual)
• Inrush power: 9.6 VA at 24 V ac (11.50 VA per manual)
• Minimum voltage at solenoid: 18 V ac
• Flow range: 0.25–30 GPM
• Pressure rating: 10–150 PSI (install a pressure regulator above 80 PSI per UPC Sec. 1007(b))
• Valve dimensions: H 5⅛ in. × W 3 in. × L 4 in.
• Approximate weight: 1 lb
• Warranty: 5-year manufacturer warranty
• UPC: 090258041184

Pressure Loss at Flow (CIT, Fresno tested)

• 0.25 GPM — 5.00 psi
• 2 GPM — 4.60 psi
• 5 GPM — 3.50 psi
• 10 GPM — 4.00 psi
• 15 GPM — 2.97 psi
• 20 GPM — 3.26 psi
• 30 GPM — 6.20 psi

How It Installs — Quick Overview

Pipe. Apply PVC pipe cement to the male pipe and the inside of the 2400S socket. Seat fully, hold 30 seconds, and let cure per the cement’s instructions. Check the cast-in arrow on the body before gluing — flow direction matters.

Critical: do NOT plug the downstream bleed port with cement — keep it clear.

Wiring. Use 18 AWG plastic-jacketed thermostat / sprinkler control wire for runs up to 800 ft from the controller; step up to 14 AWG for longer runs. Splice the two valve leads to the controller’s zone hot and common terminals. All splices must be waterproof — wire nuts sealed with vinyl cement or gel-filled connectors (DBY/DBR-style) are the standard.

Bleed test. Pressurize the system, then turn the manual bleed screw counterclockwise — water should flow downstream without energizing the solenoid. Tighten clockwise to close. This is your install verification before burying the valve box.

Field Servicing — the Threaded Bonnet Advantage

When the diaphragm eventually needs replacing — ten or fifteen years in if you’re lucky — shut off the supply, bleed pressure, unscrew the bonnet nut cap counterclockwise, lift the cover assembly straight up, swap the spring and diaphragm, and reassemble. The glued slip joints stay glued. No saws, no couplers, no down-zone disruption.

Freeze-Climate Note

In freeze climates, install a stop-and-waste shutoff on the main line feeding the system. After fall shutoff, electrically energize each valve for a few minutes (with the water off) to vent the upper diaphragm cavity and drain the body completely before frost.

Compatibility

The 2400S solenoid runs on any irrigation controller that delivers 24 V ac at 18 V minimum at the valve — that’s every modern residential and commercial controller, including Irritrol, Rain Bird, Hunter, Toro, and Orbit. The wire-size guidance above (18 AWG to 800 ft, 14 AWG beyond) is what keeps the solenoid in spec on long runs.

Optional Service Parts — Sold Separately

• Irritrol 2400-45 Bonnet Removal Wrench — speeds bonnet-cap removal on field service calls
• Irritrol part #100236 diaphragm — replacement diaphragm fits 2400, 2600, and 2700DPR series

Stop by Garoppo’s to pick one up, or schedule local delivery within our service area.