Bermad Model 420 - 2 way Pressure Reducing Valve

The BERMAD Model IR-420 Pressure Reducing Valve 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.

PRODUCT CODE:

420-2W-XXX

SIZE RANGE:

40-250mm

Features and Benefits

Line Pressure Driven Pressure Reducing Valve
- Protects downstream systems
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Advanced Globe Hydro-Efficient Design
- Unobstructed flow path
- Single moving part
- High flow capacity
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Fully Supported & Balanced Diaphragm
- Requires low actuation pressure
- Excellent low flow regulation performance
- Progressively restrains valve closing
- Prevents diaphragm distortion
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User Friendly Design
- Easy pressure setting
- Simple in-line inspection and service
- Easy addition of control features

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[1] BERMAD Model IR-420 reduces line pressure,protecting downhill line and consumers.
[2] BERMAD Pressure Relief Valve Model 73Q
[3] BERMAD Strainer Model 70F

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Typical Applications

Pressure Reducing Stations
Flow and Leakage Reduction
Cavitation Damage Protection
Pressure Zoning
Downhill Supply Lines
System Maintenance Savings
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Technical Specifications

Dimensions and Weights

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Technical Data

Patterns and Sizes: Globe: 3-16”; DN80-400 Angle: 3-4”; DN80-100

End Connections:

Pressure Rating: 16 bar; 232 psi

Operating Pressure Range: 0.5-16 bar; 7-232 psi

For lower pressure requirements, please contact us.

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Setting Range: 1.5-16 bar; 22-232 psi

Setting ranges vary according to specific pilot spring. For more information please contact us.

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Materials:

Body and Cover:

Polyester Coated Cast or (10”; DN250 and larger) Ductile Iron

Spring: Stainless Steel

Diaphragm: Nylon fabric Reinforced NR with rugged insert

Bolts, Studs and Nuts: Zinc-Cobalt plated Steel

Control Accessories: Brass

Tubing and Fittings: Reinforced Plastic and Brass

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Flow Chart

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Operation

The Needle Valve [1] continuously allows line pressure into the Control Chamber [2]. The Pressure Reducing Pilot [3] senses Downstream Pressure [P2], and throttles when it rises above setting. Pressure then accumulates in the control chamber causing the Valve to throttle closed, decreasing [P2] to pilot setting. The pilot releases accumulated pressure when [P2] falls below setting, thereby causing the Valve to modulate open. The needle valve controls the closing speed. The Downstream Cock Valve [4] enables manual closing.

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