In Sprinklers and Irrigation Blog
Hunter PRS40

Hunter PRS40


Hunter PRS40

Calibrated at a consistent 2.8 bar, the PRS40 is designed for optimal performance when combined with the revolutionary MP Rotator. To maximize water efficiency at any site, the PRS40 and MP Rotator are a partnership that performs.

 Quick Specs

Regulating Pressure at The Nozzle Creates a Steady, Efficient Spray

The ability to regulate water pressure is crucial to overall system efficiency. The Gray-capped Hunter PRS40 takes all the rugged and reliable features of the Pro-Spray body and delivers efficient pressure regulation by keeping water pressure at a constant 40PSI. The built-in regulator is proven to reduce water waste and promote healthier root zones, because water is delivered at the optimum pressure for spray nozzles. The Hunter PRS40 is compatible with both fixed-arc and Pro Adjustable Nozzles, and is available in Shrub, 4”, 6” and 12” riser heights. It is recommended for both residential and commercial applications.



  • Application: Residential/commercial
  • Models: Shrub, 4″, 6″, 12″
  • No side inlet (NSI) version available in 6″ and 12″
  • Identification cap is brown for easy field ID
  • Warranty period: 5 years


Designed for commercial spray systems, the PRS40 boasts an in-stem 2.8 bar regulator, providing optimal pressure to reduce water waste. Other features include a

factory-installed check valve and the most powerful retraction spring in its class.

Co-molded wiper seal

This pressure-activated, multi-function wiper seal was designed to reduce flow-by. The zero flush seal operates at low pressures and allows more sprinkler heads to be installed on the same zone. The wiper seal’s design protects the riser when operating, and keeps debris out of the seal when retracted, reducing riser stick-ups.

Body cap won’t leak under high pressure

The Pro-Spray line incorporates a heavy-duty ribbed body and durable cap engineered to withstand the harshest environments, including the rigors of foot traffic and the abuses of heavy machinery. In addition, a multi-thread buttress design provides superior strength in cap-to-body gripping capacity helping the head to withstand high inlet surge pressures.

Heavy-duty spring

The strongest retraction spring for positive retraction under any conditions.



View the Hunter PRS40 in our                        Online Shop

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