Rainwater collection systems can be designed to provide uninterrupted supply of water by implementing a backup method from a second source.
The most reliable backup method is 'direct backup' in which both the backup source (typically municipal supply or well water) and rainwater supply directly connect to the plumbing system through a motorized three-port valve. When there is sufficient water in the rainwater tank, the valve connects the rainwater supply to the plumbing system. When the water level in the rainwater tank reaches a pre-set low level, the valve connects the backup water supply to the plumbing system. A reduced pressure backflow preventer is used between the backup supply and the valve to assure there is no cross-contamination.
Our unique three-port valve is ideal for rainwater systems. The hydraulic section of the valve is optimized for low pressure drop and consists of a nickel-plated brass valve body with a stainless-steel ball and teflon seats. The valve is directly coupled to a 24vac electric rotary operator that requires only 6.5 watts to operate and 1.5 watts to hold. When power is applied, the ball rotates 90°. When the water level returns to the desired level, a 24vac signal applied to the opposite terminal returns the valve to its normal state. For cistern backup systems, the solenoid valve is controlled by a low-voltage float switch or by our Rainwater System Controller (the return state voltage is only aplied in versions shipped after 12/09).
Features include manual override (black knob on top) for use in the event of loss of electrical power. The unit also features an internal thermostatic 4W anti-condensation heater to alleviate condensation.
Options:
An internal batttery backup option is available for $296.00 which provides an alternative power supply to drive the actuator to a pre-set failsafe position in the event of a power failure.
Method of Operation:
On receipt of a continuous power signal within the voltage range shown above, the motor runs and, via a flat gear system, rotates the output shaft. The motor is stopped by internal cams striking micro switches. On receipt of a reversing continuous signal, the motor turns in the opposite direction reversing the output drive.
Note:
The power signal needs to remain on at all times to activate the thermostatic anti-condensation heater. The volt free end of travel confirmation switches must NOT be used to cut the power.
3-Way Ball Valve - Flow Pattern
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L-Port Diverter/Selector
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| Actuator Status Light Basic Functions: |
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Visual indication of the actuator’s operating status is constantly shown by a highly visible LED light. |
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Constantly lit LED
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The LED flashes with 2 blinks
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LED flashes on/off
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If the actuator is operating correctly with no faults, the LED shows a constantly lit light.
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If the actuator has been left in ‘manual’ mode, the actuator’s motor runs but doesn’t drive the output shaft. After a pre-set time, the actuator knows that as the torque limiter has not activated and that the motor is running, it is in ‘manual’.
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When the actuator senses an impending valve jam, the electronic torque limiter is activated and on activation
repeatedly flashes the LED on and off.
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| Specifications: |
| Water Lines: |
3 X 1-1/4" (1-1/2" and 2" sizes available) |
| Voltage: |
12 - 24 Volts DC or AC (50/60Hz) |
| Working Time: |
12 Seconds / 90° |
| Temperature: |
-4 to +156°F |
| F03/04/05 |
Duty: 75% |
| IP Weatherproof: |
IP-65 |
Download Detailed 3-Way Valve Wiring Instructions
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