Skip to content
Hunter PMR-40-MF 1-inch medium-flow pressure regulator preset to 40 PSI, 1" female NPT inlet and outlet on white bg

Hunter PMR-40-MF 1" Medium-Flow Pressure Regulator, 40 PSI

Brand: Hunter
Save 44%
$25.78
$14.50
SKU PMR-40-MF-4F4FV
In Stock (85)

Notify me when back in stock

The Hunter PMR-40-MF is a preset, fixed 40 PSI Pressure-Master regulator designed for medium-flow irrigation applications. It delivers consistent outlet pressure for improved coverage and reliable performance across drip, microspray, and low-volume systems.

  • Fixed 40 PSI outlet for stable irrigation performance.
  • Medium-flow capacity: 2-20 GPM (2 to 20 gallons per minute), ideal for 1" installations and zone control.
  • 1" female NPT inlet and outlet; also available in 3/4" and BSPT variants for broader compatibility.
  • Durable, pressure-tested construction with very low hysteresis and minimal friction loss.
  • Can be installed above or below ground and helps protect downstream components from high inlet pressures.
  • Two-year warranty on materials, workmanship, and performance.

Ideal for contractors and homeowners who need dependable pressure control, the PMR-40-MF simplifies system design and reduces maintenance. Verify inlet pressure and pair with an appropriate filter to maximize regulator life.

Reviews

Frequently Asked Questions

What flow range does the PMR-40-MF support?
The PMR-40-MF supports 2–20 GPM (medium-flow), making it suitable for 1" zone and drip installations.
What connection sizes are available for this regulator?
Standard 1" female NPT inlet and outlet; models also come in 3/4" and BSPT variants for compatibility.
Can the regulator be installed above or below ground?
Yes. It is rated for above- or below-ground installation; use a filter and confirm inlet pressure for best results.