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The valve maintains a preset downstream pressure, regardless of upstream pressure or flow rate fluctuation. The main valve is controlled by a 3-way pilot, allowing full opening when the pressure drops below a downstream pressure set-point.

Features & Benefits

• Accurate, stable control from no-flow to full-flow.
• Exceptionally low head losses at high flows.
• High resistance to corrosive water and other acid media (including 3-way pilot).
• Simple to install – manufactured with threaded or socket (slip) connections.
• Simple and reliable design – diaphragm is the only moving component.
  Shaft, seals or bearings are not located within the water’s passage way.

Purchase Specifications

• Hydraulic valve with direct sealing flexible diaphragm.
• Inline maintenance.
• Stem, shaft or guide bearing are not located within the water passage.
• Activated by the line pressure or by an external hydraulic or pneumatic
  pressure.
• Operated by a pressure reducing pilot valve to achieve constant outlet
  pressure, regardless of upstream pressure or flow variations.
• Valve and the controls are Netafim Series 61PRXPLS (X is used to signify size
  of valve – 3″, 4″, 6″, etc.).

Quick Sizing

• Valve size same a line size or one size smaller.
• Maximum flow speed for continuous operation of 18 ft/sec.

Design Considerations

• The valve should be suited for the maximal flow and allowed headloss.
• Large pressure differentials may cause cavitation damage. Consult with Netafim if such conditions are expected.