Rain Bird RD04SP45F RD1800 4 in. Pop-up Spray with PRS & SAM

Rain Bird RD04SP45F (RD1800 series) is a heavy-duty 4 in. pop-up spray head engineered for reliable residential and commercial irrigation. Built from UV-resistant thermoplastic with corrosion-resistant stainless steel components, the RD04SP45F resists debris and chemical exposure for long service life. Its removable top-access design simplifies maintenance and flushing without special tools.

• Built-in 45 PSI PRS pressure regulator: Reduces misting and stabilizes flow across variable supply pressures for more uniform coverage.
• Seal-A-Matic (SAM) check valve: Prevents low-head drainage and helps retain water in the lateral to reduce puddling and waste.
• Flow-Shield technology: Shields internal components from grit and helps identify performance issues quickly during inspections.
• Durable sealing and retraction: Triple-blade wiper seal and stainless steel spring provide reliable stem retraction and debris resistance in challenging soils.
• Dimensions & inlet: 4 in. pop-up height; 6 in. body height; exposed diameter 2 1/4 in.; 1/2 in. female threaded side inlet (NPT).
• Nozzle compatibility: Accepts Rain Bird plastic spray nozzles (Rotary, U-Series, MPR, HE‑VAN, VAN, SQ). Nozzle sold separately; pre-install Pop-Top flush plug included for easy nozzle installation.

Designed for spacing up to 24 ft and an operating range of roughly 15–100 PSI, the RD04SP45F is suitable for landscapes, parks, and commercial turf where dependable sealing and pressure regulation are required. Refer to manufacturer technical documents and performance charts for precise flow rates and nozzle selection when designing your system.