Pressure Reducing Valves

Images of Nylon and PVC Pressure Reducing Valves
Pressure Reducing Valves

Images of Nylon and PVC Pressure Reducing Valves

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.
Images of Nylon and PVC Pressure Reducing Valves
Pressure Reducing Valves

Pressure Reducing Valves Technical

Specifications*

  • Nylon Valve Operating Pressure:
    - Maximum pressure: 145 psi (10 bar)
    - Minimum pressure: 8 psi (0.6 bar)
  • 3" and 4" PVC Valve Operating Pressure:
    - Maximum pressure: 115 psi (8 bar)
    - Minimum pressure: 8 psi (0.6 bar)
  • 6" PVC Valve Operating Pressure:
    - Maximum pressure: 145 psi (10 bar)
    - Minimum pressure: 8 psi (0.6 bar)
  • Maximum water temperature:
    - 100° F at maximum pressure

*Pressure refers to upstream pressure

D[mm] ≤ √(250 x Flow[m3/hr] / √Pressure [mwc])