RAF Waterworks
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Product Catalog Diaphragm Control Valve

Hydraulic Valve RAF Series RAF PURPOSE HYDRAULIC VALVES Technical Information RAF 10 4RAPHAEL Raphael Valves Industries (1975) Ltd.

RAF SERIES HYDRAULIC VALVES RAF IRRIGATION RAF valves are used for general water supply and irrigation. The RAF valves are made of only three parts; each one is made of durable materials. The inner flow passages are streamlined and coated with low-friction materials. This provides quiet flow in both directions, low head loss and minimal wear. Valves operate with a patented reinforced diaphragm, which eliminates the need for a retaining metal spring. The special elastic design enables gradual and precise opening or closing of the valve. By eliminating the metal spring, the RAF is virtually...

Hydraulic Valve RAF Series PART LIST OF MAIN VALVE STANDARD FEATURE: Ref RECOMMENDED WORKING CONDITIONS RANGE DN 4RAPHAEL Raphael Valves Industries (1975) Ltd.

Nominal diameter only, for full dimensions please refer to the Engineering department.

Hydraulic Valve RAF Series RAF SERIES HYDRAULIC VALVES FOR WATERWORKS RAF 10 Float Level Control Valve The RAF 10 float level control valve is activated by line pressure in any situation that maximum water level should be maintained. The RAF 10 stays open as long as the water level in the reservoir is below the maximum preset level. As the water level rises and lifts the float, the valve gradually closes. When the water level is low, the control chamber of the valve is drained through the vent, the valve opens and the reservoir is being filled. Max. Working pressure: up to 5 bar Green house...

AUTOMATIC OPERATION: When the water level is tow, the [ever drops due to the float weight, causing the vent to open and drain the control chamber of the RAF through the vent. The line pressure then pushes the diaphragm of the RAF upward, opening the RAF and filling up the reservoir. As the water level inside the tank rises, the float lever moves upward, mechanically closing the vent. Consequently, the RAF shuts due to the line pressure, pushing the diaphragm downward. RAF-10 2-W Float Level Control Valve RECOMMENDED FLOW FEATURES Nominal Diameter • Basic RAF valve two-layered...

Hydraulic Valve RAF Series RAF SERIES HYDRAULIC VALVES FOR WATERWORKS RAF 1031 Electric Float Control Valve, 3-W Metal Solenoid The RAF 1031 is a Normally Closed (N.C) electric float control valve, activated by line pressure. The electric circuit is switched by a float hanging over the water surface at the desired height. When the water level drops below the float, the electric circuit is switched on and opens the valve through a solenoid valve. As the rising water reaches the maximum level, the solenoid is de-energized and the RAF 1031 closes. The RAF 1031 is a non-modulating service valve,...

AUTOMATIC OPERATION: When the water level is tow, switch the selecting cock to AUTO to connect the electric circuit. This energizes the solenoid, causing the RAF's control chamber to drain. As the water level rises and activates the electric float, the electric circuit disengages, deenergizing the solenoid. Line pressure is then directed to the control chamber through the solenoid. Consequently, the RAF 1031 closes, halting the water flow into the tank. MANUAL OPERATION: To open the valve overriding the float place the selecting cock in OPEN position. To close the valve overriding the float...

Hydraulic Valve RAF Series RAF SERIES HYDRAULIC VALVES FOR WATERWORKS RAF 13 Bi-Level Float Control Valve, 3-W Float Pilot The RAF 13 is activated by line pressure and controls by a float pilot. The valve opens at a low preset water level and closes at a high preset water level. Therefore, there is no need for energy other than line pressure. The RAF 13 allows filling and draining of a reservoir or a water tank in a level range that can be easily changed. The RAF 13 stays in its last position (fully open or fully close) as long as the water level is in between minimum and maximum preset...

AUTOMATIC OPERATION: When the water level reduces the float slides down on the rod due to its weight. When it reaches, the minimum preset level indicated by the lower stopper attached to the Pilot's rod, the pilot's vent port is connected to the control chamber of the RAF The diaphragm of the RAF is forced upwards by line pressure, the RAF 13 opens and fills the reservoir. When water level rises, the float slides upwards on the rod. The valve in this case will remain open until maximum preset level [upper stopper] is reached. At maximum, level the float forces upper stopper up. The control...

Hydraulic Valve RAF Series RAF SERIES HYDRAULIC VALVES FOR WATERWORKS RAF 20 Pump Protection Control Valve The RAF 20 valve regulates the pressure level during the start and shut-off of a pump to protect the pumping assembly and the downstream network. The RAF 20 is applicable, with slightly different layout and switching, for either vertical [deep well} or horizontal [booster] pumps. ln both configurations, the RAF 20 is connected electrically to the pump’s control panel. For booster pumps control the RAF 20 is installed on the main line downstream of the pump. Generally the valve protects...

BOOSTER PUMP CONFIGURATION By default of the normally closed RAF valve, the line utomatic: The three-way cock should be positioned at A. Normally, the power is turned OFF and the valve is closed,as illustrated.When the pump is turned ON,the solenoid is energized and its plunger flips to the left. Port 1 of the solenoid closes and the vent opens. The control chamber of the RAF 20 drain, the RAF opensgradually,allowing the pump to achieve higher outflow.As the RAF 20 opens, the indicator rises to its upper position. When the electric power is turned OFF, from any reason, the solenoid...

Hydraulic Valve RAF Series RAF SERIES HYDRAULIC VALVES FOR WATERWORKS RAF 31-33 3-Way Electric Control Valve RAF 31 and RAF 33 valves are activated by line pressure. The valves open or close by electric command through a selection of solenoid valves. The solenoid opens or closes the RAF as it is energized by an electric pulse. The electric pulse that commands the valves is generated by a controller, timer, sensor or an electric control device. Green house Mechanised Irrigation Open field Water Irrigation Transmission T E C H N I C A L D ATA Fluid: raw water or filtered water Nominal...