DIAPHRAGMACTUATED VALVES

	DIAPHRAGM ACTUATED VALVES	RAF MODELS	RAF General Information
\| Description \| Applications \| Available Models \| Installation \| \| Typical Application \| Specification Form \| Animation \|	RAF 1031 Electric Float Level Control Valve

Description
RAF 1031 is a normally closed electric float control valve, activated by line pressure. The electric circuit is switched by a surface at the desired height, when the water level drops below the float, the electric circuit is switched on and opens the RAF 1031 through a solenoid valve. as the rising water reaches the float level, the circuit is disconnected & the RAF 1031 closes.

Available Models
RAF 1031 General application NC Electric Float Control Hydraulic valve, Pressure rating up to 16 bars.

Selection of AC Solenoid valves at 24V, 110V & 220V.
Selection of DC Solenoid valves at 12V, 24V.

Applications
Use RAF 1031 for water level control. The valve is best for remote or local control of reservoirs & water tanks level control. Due to its simple design it is virtually maintenance free.

Installation
RAF Electric Float Control Valve is activated by line pressure & controlled by a three-way solenoid valve. The RAF 1031 is normally closed. An electric circuit is turned ON/OFF by a float hanging over the water surface. When the float hang vertically above the water surface, the circuit is connected, the solenoid is energized & the RAF valve opens. When the float is horizontal (floating) the electric circuit is disconnected, the solenoid is open & the RAF is closed.
In case of power failure, the RAF 1031 remains tight-close to avoid uncontrolled spill of water.
Three-way configuration:
The RAF control chamber drains out completely, enables the valve to open fully.

Control Mode
Manual Operation:
Use 3-way selecting cock to open or close the RAF.
Automatic Operation:
Position the selecting cock on A. When the water level is low, the electric circuit is connected. The solenoid is energizer. The RAF's control chamber drains out. The RAF is fully open.
When the water level rises & float the electric float, the electric circuit turns off & de-energizes the solenoid. The solenoid's plunger flips upward, as shown. Line pressure flows into the RAF's control chamber through ports 1-2. The RAF 1031 closes & stops the water flow into the tank.

Adjustment
Preset the highest water level by fixing the float to the reservoir's inner wall at the desired level.

Typical Application

RAF 1031 electric float controls the water of a water tank. The valve can be located also above the upper water level of the tank.

Standard RAF 1031	Special Features
Complete basic RAF valve as specified above	Enamel/epoxy coating
Self-cleaning screen filter	External heavy duty screen filter
Selecting cock (3-ways)	-
Assembled 24V-AC Solenoid	-
Electric Float+10m Cable	Additional cable upon request
Cock valve	-
3/8" reinforced plastic tubes	-