Description
Pressure Reducing Valve IR-420-54-KX
The Bermad Normally Closed, Pressure Reducing Valve with Hydraulic Control, is a hydraulically operated, diaphragm actuated control valve.
It reduces higher upstream pressure to lower constant downstream pressure regardless of fluctuating demand, and opens fully upon line pressure drop. It is a Normally Closed valve, which opens in response to a remote pressure rise command and shuts in the absence of that command.
Applications:
- Computerized Irrigation
- Pressure Reducing Stations
- Systems Subject to Varying Supply Pressure
- Remote and/or Elevated Plots
- Distribution Centers
Hydraulic Pressure Control, Normally Closed
- Line pressure driven
- Closes upon control failure
- Protects downstream systems
- Opens fully upon line pressure drop
- Amplifies and relays weak remote command
Advanced Globe Hydro-Efficient Design
- Unobstructed flow path
- Single moving part
- High flow capacity
Fully Supported & Balanced Diaphragm
- Requires low actuation pressure
- Excellent low flow regulation performance
- Progressively restrains valve closing
- Prevents diaphragm distortion
User-Friendly Design
- Easy pressure setting
- Simple in-line inspection and service
Operation
The 3-Way Hydraulic Relay Valve (3W-HRV) hydraulically connects the Pressure Reducing Pilot (PRP) to the Valve Control Chamber. The PRP commands the Valve to throttle closed should Downstream Pressure rise above setting, and to open fully when it drops below setting.
The 3W-HRV switches upon pressure drop command, directing line pressure into the control chamber, and thereby causing the main Valve to shut. The 3W-HRV also features local manual closing.
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