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IR-423-RXZ

IR-423-RXZ
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400 Series Pressure Reducing & Sustaining PRESSURE REDUCING AND SUSTAINING VALVE Model IR-423-RXZ The BERMAD Model IR-423-XZ Pressure Reducing and Sustaining Valve is a hydraulically operated, diaphragm actuated control valve with two independent functions. It sustains minimum preset upstream pressure regardless of fluctuating flow or varying downstream pressure, and it prevents downstream pressure from rising above maximum preset regardless of fluctuating flow or excessive upstream pressure. Features & Benefits ֺ Line pressure Drive, Hydraulically controlled Prioritized higher pressure zones Protects lower pressure zones ■ Controls system fill-up ■ Prevents pipeline emptying ■ Protects pump from overload and cavitation ■ Compensates during groundwater drawdown ■ Protects downstream system 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 [1] BERMAD Model IR-423-XZ sustains filters downstream pressure insuring sufficient backwash pressure, preventing line emptying, controls downstream system fill up & reduces its operation pressure [2] BERMAD Filters Back Wash valves Model IR-350 [3] BERMAD Air valve Model IR-K-10-P [4] BERMAD Field valve IR-110-X Easy pressure setting Simple in-line inspection and service Easy addition of control features Typical Applications ֺ Line Fill-Up Control Solutions ֺ Filter Backwash Pressure Sustaining ֺ Pump Circulation Systems (with Orifice) ֺ Pressure Reducing Systems ֺ Line Emptying Prevention The Pressure Reducing Pilot (PRP) 1 is hydraulically connected to the Valve Control Chamber 2 through the Pressure Sustaining Pilot (PSP) 3 . The PSP commands the Valve to throttle closed should Upstream Pressure P1 drop below setting. When P1 rises above setting, the PSP switches and allows the PRP to control the Valve, commanding it to reduce Downstream Pressure P2 . Should line pressure remain above PSP setting but below PRP setting - the valve opens fully. The Manual Selector 4 enables local manual closing. All images in this catalog

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400 Series Pressure Reducing & Sustaining Technical Data Control Accessories: Body & Cover: Cast iron (up to 8”) Tubing and Fittings: Reinforced plastic Operating Pressure Range: 0.5-16 bar, 7-232 psi Ductile iron (10” & above) Pilot Spring Range: Diaphragm: NR, Nylon fabric reinforced Spring: Stainless steel Setting ranges vary according to specific pilot spring. Please consult factory Cover Bolts: Stainless Steel Spring Setting Pilot Type color Range Green 0.2-1.7 bar Mini pilot Gray 0.5-3.0 bar Mini pilot Colorless 0.8-6.5 bar Mini pilot Blue 1-16 bar Pilot Technical Specifications Globe...

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