Rain Bird 1804 PRS-45 4-inch pop-up spray head with built-in 45 psi pressure regulator and SAM check valve
Rain Bird 1804 PRS-45 spray head assembled 1800 series body shown in installation context
Rain Bird 1804 PRS-45 spray body feature graphic showing pressure-regulated stem construction
Rain Bird 1804 PRS-45 nozzle compatibility graphic — works with all Rain Bird plastic spray nozzles
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Rain Bird 1804 PRS-45 4-inch pop-up spray head with built-in 45 psi pressure regulator and SAM check valveRain Bird 1804 PRS-45 spray head assembled 1800 series body shown in installation contextRain Bird 1804 PRS-45 spray body feature graphic showing pressure-regulated stem constructionRain Bird 1804 PRS-45 nozzle compatibility graphic — works with all Rain Bird plastic spray nozzles

Rain Bird 1804 PRS-45 Pop-Up Spray Head, 4 Inch

Rain Bird
Price:
$5.49

Description

Hold every spray head at a clean 45 psi outlet pressure with the Rain Bird 1804 PRS-45 Spray Head. The built-in pressure regulator inside the stem keeps every emitter on the zone delivering the same flow — no misting from end-of-line bodies, no weak coverage at the far edge, no wasted water through a damaged or missing nozzle. The 4 in pop-up height clears most lawn-edging and groundcover situations. Designed for use with all Rain Bird plastic spray nozzles, with rotary nozzles (R-VAN) hitting their optimal 45 psi performance point right out of the body.

Why Irrigation Pros Pick This Body

  • Patented PRS pressure regulator built into the stem — constant 45 psi outlet regardless of inlet pressure
  • 45 psi is the optimal operating pressure for Rain Bird R-VAN rotary nozzles
  • Restricts flow up to 70% if a nozzle is removed or damaged — cuts water loss and protects the rest of the zone
  • Eliminates misting and fogging caused by high inlet pressure
  • Compatible with all Rain Bird plastic spray nozzles — pairs with your existing nozzle inventory
  • 4 in pop-up height (10.2 cm) clears most lawn and groundcover edging
  • EPA WaterSense certified — meets state PRS requirements
  • “PRS-45” stamped on cap for easy ID during maintenance
  • Five-year trade warranty

Where It Shines

  • Residential and light-commercial lawn irrigation zones
  • Areas with high or fluctuating municipal water pressure
  • Vandal-prone sites where nozzle theft or damage is common
  • Mixed-nozzle zones — the PRS body delivers consistent pressure regardless of nozzle choice
  • State jurisdictions requiring pressure-regulated spray heads (CA, WA, CO, etc.)

Specifications

  • Model: 1804P45
  • Pop-up height: 4 in (10.2 cm)
  • Inlet pressure range: 15-70 psi (operates within range; regulates outlet to 45 psi)
  • Outlet pressure: 45 psi (regulated)
  • Flow rate range: 0.62 to 20.1 gpm (depends on nozzle)
  • Features: Pressure regulation, Seal-A-Matic (SAM) check valve, flow shutoff if nozzle removed
  • Compatible with: All Rain Bird plastic spray nozzles, including R-VAN rotary
  • Nozzle included: No (purchase separately)
  • Non-potable use: Yes
  • Certifications: EPA WaterSense
  • Warranty: 5-year trade
  • Approximate weight: 1 lb

Note: This is the body only — choose your Rain Bird nozzle (R-VAN, MPR, or U-series) separately based on the spray arc and radius needed for the zone.

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

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