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RainBird 1812 SAM-PRS

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List Price: $20.85
Our Price: $13.75
Item Number: RB-1812-SAM-PRS
Manufacturer: RainBird
Manufacturer Part No: 1812-SAM-PRS

1812-SAM-PRS   -   1800-SAM-PRS Series

Pop-up Spray Heads with built-in Pressure Regulating Stem 

and Seal-A-Matic™ Check Valve

Rain Bird® 1800-SAM-PRS Series Spray Heads meet the needs of all spray areas, regardless of changing elevation or water pressures. This top of the line spray head incorporates all 1800 Series SAM and PRS features, making them ideal for use in areas with high and/or widely fluctuating water pressures and steep slopes.

Trusted for over 30 years, 1800 Series Spray Heads have provided unmatched durability, reliability, and performance. Superior components and features make the 1800 Series Spray Head the spray head of choice for a wide variety of applications.


  • PATENTED PRS pressure regulator built into the stem. No parts to be installed at the site. Saves time and money.
  • Maintains constant outlet pressure at 30psi (2.1 bar). Spray nozzles perform best at 30psi. Ensures maximum nozzle performance, even with varying inlet pressures. Maintains constant pressure regardless of nozzles used.
  • Restricts water loss by up to 70% if nozzle is removed or damaged. Saves water and money. Reduces possibility of accidents and property damage.
  • 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.

Operating Range

  • Spacing: 3 to 24 feet (0.9 to 7.3 m).
    • 3 to 18 feet with standard Rain Bird Spray Head Nozzles (MPR, VAN, U-Series).
    • 13 to 24 feet with Rain Bird Rotary Nozzles.
  • Pressure: 25 to 70 psi (1.7 to 4.8 bar).


  • SAM capability: holds up to 14 feet (4.2 m) of head; 6 psi (0.4 bar)
  • Flow-by: 0 at 8 psi (0.6 bar) or greater; 0.50 gpm (0.11 m3/h; 1.80 l/m) otherwise


  • 1⁄2" (15/21) female threaded inlet
  • Body height:
    • 1804-SAM-PRS: 6" (15.2 cm)
    • 1806-SAM-PRS: 9 3⁄8" (23.8 cm)
    • 1812-SAM-PRS: 16" (40.6 cm)
  • Exposed surface diameter: 2 1⁄4" (5.7 cm)
  • 1/2" (15/21) female threaded inlets.
  • Body height:
    1804-PRS: 6" (15 cm)
    1806-PRS: 9 3/8" (24 cm)
    1812-PRS: 16" (40 cm)
  • Exposed surface diameter:
    2 1/4" (5,7 cm)