Southwest Irrigation, LLC
Southwest Irrigation is the leading supplier for Heap Leach Mining Systems and Agricultural Irrigation Systems in the southwest.

Pressure Reducing Valve

The Model 720-55 Pressure Reducing Valve with Solenoid Control is a hydraulically operated, diaphragm actuated control valve that reduces higher upstream pressure to lower constant downstream pressure regardless of fluctuating demand or varying upstream pressure. The valve opens and shuts off in response to an electric signal.

Features and Benefits

Line pressure driven – Independent operation
Solenoid controlled

  • Low power consumption
  • Wide ranges of pressures and voltages
  • Normally Open, Normally Closed or Last Position

In-line serviceable – Easy maintenance

Double chamber design

  • Moderated valve reaction
  • Protected diaphragm

Flexible design – Easy addition of features
Variety of accessories – Perfect mission matching
"Y" or angle, wide body – Minimized pressure loss
Semi-straight flow – Non-turbulent flow
Stainless Steel raised seat – Cavitation damage resistant
Obstacle free, full bore – Uncompromising reliability
V-Port Throttling Plug – Low flow stability

Typical Applications

The Model 720-55 is installed as a by-pass between the reservoir supply line and the pump discharge line to the distribution network providing four major advantages:

  • Saves energy and lowers costs by shortening pumping hours, when supply pressure is sufficient
  • Protects the distribution network from excessive supply pressure
  • Automatically refreshes the water in the reservoir by periodically forcing supply through reservoir
  • Ensures uninterrupted supply during reservoir maintenance



  Office 520-384-9223
401 E Maley
Willcox, AZ 85643
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