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.
Patterns and Sizes: Globe: 3-16”; DN80-400 Angle: 3-4”; DN80-100
Pressure Rating: 16 bar; 232 psi
Operating Pressure Range: 0.5-16 bar; 7-232 psi
For lower pressure requirements, please contact us.
Setting Range: 1.5-16 bar; 22-232 psi
Setting ranges vary according to specific pilot spring. For more information please contact us.
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
The Needle Valve  continuously allows line pressure into the Control Chamber . The Pressure Reducing Pilot  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  enables manual closing.
Please specify the requested valve in the following sequence: (for more options, please contact us.)