Rain Bird 4" Pop-Up Spray Sprinkler 1804-SAM-PRS — 4" Riser with 3.0 psi Pressure Regulator & Seal-A-Matic Check Valve

The Rain Bird 1804-SAM-PRS is a 4-inch pop-up spray sprinkler with an integrated 3.0 psi pressure regulator and a Seal-A-Matic check valve for reliable, low-splash irrigation performance.

Built for residential and light commercial turf and landscape zones, the 1804-SAM-PRS combines a compact 4" riser height with built-in pressure regulation and a sealing check valve so you get consistent spray patterns, reduced misting, and protection against low-head drainage. The nozzle is sold separately and the body is compatible with any Rain Bird spray nozzle, letting you tailor precipitation rates and throw to your layout.

How does the built-in pressure regulator improve spray performance?

The factory-installed 3.0 psi pressure regulator reduces inlet pressure to the nozzle so patterns remain even and misting is minimized, especially on higher-pressure systems. That means better distribution across the intended arc and less water lost to wind or evaporation.

• Maintains near-constant nozzle pressure at 3.0 psi for consistent coverage
• Reduces misting and overspray on high-pressure lines
• Helps preserve nozzle pattern accuracy over a range of inlet pressures

What benefit does the Seal-A-Matic (SAM) check valve provide?

The integrated Seal-A-Matic check valve prevents low-head drainage and yardwater loss when the zone turns off, keeping low spots dry and eliminating puddles. It also reduces soil erosion and prevents irrigation lines from siphoning debris back into the head.

• Holds back up to several feet of elevation difference to stop drainage
• Prevents water waste and unsightly dripping after shutdown
• Simplifies design by reducing the need for separate anti-drain valves

Will this sprinkler work with my existing Rain Bird nozzles and zones?

Yes — the 1804-SAM-PRS accepts any Rain Bird spray nozzle, giving you flexibility to match radius and precipitation rate to your landscape needs. Note that the nozzle is not included, so choose the Rain Bird nozzle that matches your arc and distance requirements.

• Compatible with Rain Bird 1800-series spray nozzles
• 4" pop-up height suits turf beds and low-profile installations
• 6" overall body length helps with bury depth and lateral alignment

How does the 4" riser size affect installation and performance?

The 4" riser indicates the exposed pop-up height when operating, making it a good choice for lawns and moderate plantings where heads should be low-profile. The full body length of 6" allows proper burial depth and stable mounting inside riser boxes or sleeves.

• 4" pop-up keeps nozzles low to the turf for discreet appearance
• 6" total body length ensures correct placement below grade
• Compact design fits common riser boxes and retrofit locations

Who is this for? Landscapers, irrigation contractors, and homeowners who need a dependable, compact pop-up head with built-in pressure regulation and anti-drain protection will benefit from the Rain Bird 1804-SAM-PRS. It’s ideal for new installs and upgrades where improved nozzle performance, reduced runoff, and cleaner shutdown behavior are priorities. Choose your matching Rain Bird spray nozzle to dial in radius and precipitation rate for turf, planter beds, or mixed landscape areas.