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Rain Bird 1804P45 4" 1800 Series Pressure Regulated P45 Spray Head - No Nozzle

SKU 1804P45
Original price $ 5.99 - Original price $ 5.99
Original price
$ 5.99
$ 5.99 - $ 5.99
Current price $ 5.99

Rain Bird 1804P45 Pressure Regulated Spray Head

Ensure optimal sprinkler performance and water savings with the Rain Bird 1804P45 4" 1800 Series Pressure Regulated P45 Spray Head. Building on the legendary reliability of the 1800 series, this professional-grade spray head features a patented, built-in pressure regulator that maintains a constant 45 PSI outlet pressure, regardless of inlet pressure fluctuations (within operating range). This precise regulation eliminates wasteful misting and fogging caused by high pressure, ensures nozzles operate at their peak efficiency for uniform coverage, and extends the life of your system components. The 45 PSI setting makes the 1804P45 particularly ideal for use with rotary nozzles, which often perform best at higher pressures compared to standard spray nozzles. 

Like all Rain Bird 1800 series heads, the 1804P45 boasts the exclusive co-molded wiper seal, providing unmatched resistance to grit and preventing leaks. A heavy-duty stainless steel spring ensures reliable retraction every time. This 4-inch pop-up model is perfect for standard turf heights. Simply pair it with your choice of Rain Bird female-threaded nozzles (MPR, VAN, HE-VAN, R-VAN, sold separately) for customized, water-efficient irrigation in any landscape.


The Perfect Pair for Pressure Regulation

Rain Bird’s pressure-regulating stem (PRS) saves up to a gallon of water per minute.

We offer three perfectly paired combinations of PRS spray bodies and high-efficiency nozzles. Each pair is designed to work together to give you the best possible performance across your entire irrigation system — all while saving water.

Rain Bird 1804P45 Features:

  • All Rain Bird pressure regulating spray bodies are WaterSense certified by ICC-ES
  • PATENTED PRS pressure regulator built into stem. No parts to be installed at the site. Saves time and money
  • Maintains constant outlet pressure at 45 psi (3.1 bar) at varying inlet pressures regardless of nozzles used
  • 30 psi is recommended for optimal spray nozzle performance, 45 psi is recommended for optimal rotary nozzle performance
  • Nozzle not included
  • Co-molded wiper seal provides unmatched resistance to grit, pressure and the environment
  • Constructed of time-proven UV-resistant plastic and corrosion-resistant stainless steel parts, ensuring long product life
  • Precision controlled flush at pop-down clears debris from unit, assuring positive stem retraction in all soil types
  • Two-piece ratchet mechanism allows easy nozzle pattern alignment and provides added durability
  • Five-Year Trade Warranty

Additional features:

  • Maintains constant outlet pressure at 45psi. Ensures maximum nozzle performance, even with varying inlet pressures. Maintains constant pressure regardless of nozzles used.
  • Unlike competitive PRS sprays, Rain Bird PRS sprays adjust to fluctuating pressure, optimizing flow and promoting a more consistent spray pattern.
  • Ensures consistent performance throughout zone if nozzle is removed or damaged. Keeps plant life covered by other spray heads properly irrigated.
  • Ends misting and fogging caused by high pressure. Stops water waste. Ensures necessary watering occurs in high pressure or wind conditions.
  • Traps water in lateral pipes in elevation changes of up to 14 feet (4,2 m). Reduces wear on system components by minimizing water hammer during start-up.
  • Prevents drainage from spray heads at lower elevations. Stops water waste. Ends landscape damage due to flooding and/or erosion.
  • Even stronger retract spring to accommodate elevation changes up to 14 feet (4,2 m). One of the strongest springs in the industry.
  • Co-molded, pressure-activated, multi-functional wiper seal assures positive seal without excess “flow-by” which enables more heads to be installed on the same valve.
  • All sprinkler components are removable from the top without special tools, providing for quick and easy flushing and
  • maintenance of the sprinkler.
  • Constructed of time-proven UV-resistant plastic and corrosion resistant stainless steel parts, assuring long product life.

Dimensions:

  • Body height: 6" (15.2 cm)
  • Exposed surface diameter: 2 1/4" (5.7 cm)
  • Pop-up Height: 4 in
  • 1/2" (15/21) female threaded inlet

Specifications:

  • Flow-by: 0 at 8 psi (0.6 bar) or greater; 0.50 gpm (0.11 m3/h; 1.80 l/m) otherwise
  • Regulates nozzle pressure to an average 45 psi (3.1 bar) with inlet pressures of up to 70 psi (4.8 bar)
  • Spacing: 2.5 to 24 feet (4.0 to 7.3 m)
  • Pressure: 15 to 70 psi (1.7 to 4.8 bar)

Flow-by: 0 at 8 psi (0.6 bar) or greater; 0.50 gpm (0.11 m3/h; 1.80 l/m) otherwise
Regulates nozzle pressure to an average 45 psi (3.1 bar) with inlet pressures of up to 70 psi (4.8 bar)
Spacing: 2.5 to 24 feet (4.0 to 7.3 m)
Pressure: 15 to 70 psi (1.7 to 4.8 bar)

Body height: 6" (15.2 cm)
Exposed surface diameter: 2 1/4" (5.7 cm)
Pop-up Height: 4 in
1/2" (15/21) female threaded inlet

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