200 Series Engineering
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BERMAD Irrigation Basic Valve ??????? IR-200 Basic Valve The BERMAD basic Model IR-200 diaphragm actuated hydraulically operated valve combines simple and reliable construction with good hydraulic performance. These automatic water control valves are designed for vertical or horizontal installation and are available in globe, angle or 'Y' patterns in diameter sizes of 1/2-2”; DN20- DN50. The IR-200 valves are divided into two main types – Hydraulic Valve and Electric Valve. The Electric Valve control circuit is internal providing some significant benefits such as: No external tubes and accessories Compact and protected construction Self-cleaning orifice for reliable valve operation, even with brackish water. The Model IR-200 is a durable plastic valve. The valve body, cover, and seal disk assembly construction material uses Glass-Filled Nylon to meet rough service conditions obtaining high chemical and cavitation resistance. The valve body design includes a full bore seat with unobstructed flow path, free of any in-line ribs, supporting cage, or shafts. Its seal disk assembly includes a flexible, carefully balanced, and peripherally supported diaphragm and a rugged guided plug with elastomeric sealing surface. This internal design enables: High flow rate with low head loss Smooth valve opening and closing Accurate and stable regulation Low opening and actuation pressure No diaphragm erosion and distortion Same diaphragm and spring fully meet the valve's operating pressure range requirements The Model IR-200 Basic Valve uses valve differential pressure to power the diaphragm assembly open or closed. The lower side of the diaphragm, which serves to cushion the closing of the valve, is exposed to downstream pressure through a peripheral passageway. The pressure in the control chamber varies, resulting from the action of a solenoid or a regulating pilot. This varying pressure modulates the valve to open or close.

BERMAD Irrigation 200 Series Principle of Operation On-Off Modes, 3-Way Hydraulic Control Closed Position Open Position Line pressure applied to the control Discharging the pressure in the control chamber of the valve creates a superior chamber to atmosphere or, some other force that moves the valve to the closed lower pressure zone, causes the line position and provides drip tight sealing. pressure acting on the seal disc to move the valve to the open position. On-Off Modes, 2-Way Solenoid Control Closed Position Open Position The internal restriction continuously Opening the Solenoid...

BERMAD Irrigation 200 Series Principle of Operation On-off Modes, 3-Way Solenoid Controlled Normally Closed Configuration The de-energized solenoid applies line pressure to the control chamber, closing the valve. Energizing the solenoid blocks the supply pressure port and opens the drain port, venting the control chamber to the atmosphere. This causes the main valve to open fully. Normally Open Configuration The de-energized solenoid blocks the valve internal line pressure inlet and opens the drain port, venting the control chamber to the atmosphere, thereby fully opens the valve....

BERMAD Irrigation 200 Series Pricipal of Operations 2-Way Modulating Modes, Pressure Reducing Modulating Closed Modulating Open Zero Flow Position The restriction continuously allows The pilot modulates open when it When demand drops to zero, line pressure into the control chamber. senses a pressure drop releasing more downstream pressure begins to rise The pilot controls outflow from the flow from the control chamber than as the flow enters a closed line. control chamber. Throttling when it the restriction can allow in. This causes The pilot closes initiating a valve’s senses a pressure...

BERMAD Irrigation 200 Series Product Parts Features, Hydraulic Valve [ 1] Fastening Bolts & Nuts 6 Stainless Steel bolts and nuts (11/2-2"; DN40-50 valves) fasten valve cover to body, ensuring quick in-line inspection and service. [2] Valve Cover (Hydraulic Type) Simple and light construction enables quick in-line inspection and service. [2.1] Flow Stem (Optional) [3] Auxiliary Closing Spring One single spring fully meets valve requirements for operating pressure range, ensuring low opening pressure and secured closing. [4] Seal Disk Assembly (Hydauic Type) The seal disk assembly includes a...

BERMAD Irrigation 200 Series Product Parts Features, Electric Valve [ 1] Fastening Bolts & Nuts 6 Stainless Steel bolts and nuts (11/2-2"; DN40-50 valves) fasten valve cover to body, ensuring quick in-line inspection and service. [2] Valve Cover (Electric Type) Simple and light construction enables quick in-line inspection and service. [2.1] 2-Way Solenoid Actuator [2.2] Manuale Override Handle [2.3] Needle - Restricts inlet flow & eliminates internal restriction clogging. [2.4] Flow Stem (optional) [3] Auxiliary Closing Spring [3] One single spring fully meets valve requirements for...

BERMAD Irrigation 200 Series Technical Data Dimensions & Weights Pattern Size L (mm) H (mm) R (mm) W (mm) Weight*(kg) CCDV** (lit) * Without flow control handle **Control Chamber Displacement Volume (liter) Technical Specifications Available Patterns & Sizes: Globe: DN: 20, 25, 40 & 50 Angle: DN: 40 & 50 Available End Connections: BSP-T; NPT female threads Pressure Rating:10 bar Operating Pressure Range: 0.7-10 bar Temperature: Water up to 60°C Standard Materials: Body & Cover: Nylon Reinforced Metal Parts: Stainless Steel Diaphragm: Natural Rubber Seals: NBR [Buna-N] Spring: Stainless...

BERMAD Irrigation 200 Series Technical Data Flow Charts Dimensions & Weights Pattern Size L (inch) H (inch) R (inch) W (inch) Weight* (lb) CCDV** (gal) * Without flow control handle **Control Chamber Displacement Volume (gallons) Technical Specifications Available Patterns & Sizes: Globe: 3/4”, 1”, 1 1/2”, 2” Angle: 1 1/2”, 2” Available End Connections: BSP-T; NPT female threads Pressure Rating: 150 psi Operating Pressure Range: 10-150 psi Temperature: Water up to 140°F Standard Materials: Body & Cover: Nylon Reinforced Metal Parts: Stainless Steel Diaphragm: Natural Rubber Seals: NBR...