Description
Pressure Reducing Valve IR-420 (IR-420-2W)
The Bermad Model IR-420 Pressure Reducing Valve is a hydraulically operated, diaphragm actuated control valve. This valve reduces higher upstream pressure to lower constant downstream pressure, regardless of fluctuating demand or varying upstream pressure.
Applications:
- Pressure Reducing Stations
- Flow and Leakage Reduction
- Cavitation Damage Protection
- Pressure Zoning
- Downhill Supply Lines
- System Maintenance Savings
Line Pressure Driven Pressure Reducing Valve
- Protects downstream systems
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
- Easy addition of control features
Operation
The Needle Valve continuously allows line pressure into the Control Chamber. The Pressure Reducing Pilot senses Downstream Pressure, and throttles when it rises above setting. Pressure then accumulates in the control chamber causing the Valve to throttle closed, decreasing to pilot setting.
The pilot releases accumulated pressure when falls below setting, thereby causing the Valve to modulate open. The needle valve controls the closing speed. The Downstream Cock Valve enables manual closing
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