PR50

BMD Pressure Reducing Valve

The PR50 series is a pilot operated regulator used in various pressure reducing applications including compressor suction control and supply or distribution pressure control.

  • Zero-bleed emissions-free device
  • Easy seat maintenance
  • Various sizes and end connections

FW Murphy is the exclusive BMD distributor for new equipment packages.

  • Overview
  • Specifications
  • Diagrams
  • Literature

The PR50 series is a self-contained, non-venting, pilot operated regulator designed for use in various pressure reducing applications. Typical applications include compressor suction control and supply or distribution pressure control.

The PR50 is offered in 2”, 3”, 4” and 6” sizes. The 2” and 3” valves are available in both flanged and female NPT threaded end connections. The flanged PR50 valves are pressure rated up to 250 psi, while the threaded end valves are rated up to 300 psi.

Maintenance is simple via removing the bonnet to reveal the seat, allowing the valve body to remain in place during maintenance.

The pilot exhaust is vented into the downstream side of the valve making the PR50 a zero-bleed, emissions-free device.

Sizes: 2”, 3”, 4” and 6”
Connections: Female NPT (2” & 3” only), flanged
Body Type: Globe
Trim: Soft seat
Shutoff: Class VI
Pressure Rating:
300 psi – 2”, 3” NPT
250 psi – 2”, 3”, 4”, 6” flanged
Minimum Differential: 10 psi
Spring Range: 10-300 psi
Temperature Range: -20° F to 250° F (-29° C to 121° C)
Body, Bonnet and Hub Material: Ductile iron

PR50 Pressure Reducing Valve

Valve Size Body Dimension (inches)  
End Connection A B C
2″ NPT 8.5 2.38 12.66
ANSI 150 9 2.88 12.66
3″ NPT 12.06 3.75 13.60
ANSI 150 12.19 3.75 13.60
4″ ANSI 150 15.06 4.44 14.31
6″ ANSI 150 22 5.63 20.04

For more information about this product, you can download the related literature here:

Sales Bulletin; (2415458, revision – 6/2024)