The Holman Low Pressure 2 Dial Tap Timer is a battery-operated tap timer for simple automatic watering from tanks, gravity-fed systems and standard garden taps. It is suited to pots, hanging baskets, shrub areas, flower beds, small lawns and short-run micro spray or drip irrigation setups.
This low pressure tap timer is designed to operate from 0 to 600kPa, making it useful where some standard solenoid-based tap timers may not perform reliably. It uses a ball valve rather than a solenoid valve, which allows it to run from low pressure water sources such as tanks while still being suitable for regular tap use.
Programming is interval-based rather than clock-based. The left dial sets how often the timer waters, while the right dial sets how long it runs. Once the interval and run time are selected and confirmed, the timer counts down and waters after the chosen interval has elapsed. It cannot be set to a specific clock time, although the start can be delayed in 1 hour steps after the program is confirmed.
The timer supports automatic and manual operation, with frequency options from every 1 hour through to weekly watering and run time options from 1 to 120 minutes. It is powered by 2 x AAA alkaline batteries and includes an LED battery indicator.
For above-ground cold water irrigation use only. Do not use without the appropriate filter. As with most tap timers, remove or protect the timer if freezing conditions are expected.
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