2 Dial Digital Tap Timer - CO3001

2 Dial Digital Tap Timer – CO3001

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The next generation of tap mounted timers that feature low energy use and a patented eco friendly battery life monitoring & display system. The Holman Digital Tap Timer fits to a standard garden tap and times the water flow to any garden hose or watering system connected. Simply connect your hose or poly pipe irrigation system to the outlet.



Product Code: CO3001
Brand: Holman

  • 20 & 25mm Tap connections (US tap threads available).
  • Easy programming using 2 dials – RUN TIME and INTERVAL.
  • Watering duration from 2 minutes to 240 minutes.
  • 8 Watering intervals ranging from every 6 hours to once per week.
  • Electronic battery monitoring that provides constant reading of battery strength.
  • Low battery auto lock out to ensure the timer cannot open unless it can close.
  • Low energy use (less than 20 micro amps in standby mode) ensures long battery life.
  • Easy manual operations – Start and Stop positions.
  • High water flow at normal water pressures.
  • High strength tap connection and easy removal via spring clip.
  • Pressure Rating: 800kPa



• Flow rate up to 24 lpm at 2 Bar (6.3 US gpm at 30psi)
• Temperature Range : 40 Deg F to 125 Deg F (3 Deg C to 50 Deg C)
• Operating Pressure 0.6 – 9.8 Bar (9 Psi to 140 Psi)
• Power source : 9 Volt Alkaline Battery – (Not included).
• Power consumption 20 micro amps in standby mode.


Can I set it for Individual Days

  • No, you can only have intervals which means, every second day or every so many hours but not a specific day.

Do they operate on a solenoid valve or a Ball Valve?

  • They operate on a solenoid valve, however we do a timer that is branded under the Aqua Systems label and available in Bunnings that is operated by a ball valve , the code is CO1905AS.

What is the minimum operating pressure, will it run off a tank?

  • Operating Pressure is 0.6 – 9.8 bar, and it will not be suitable for gravity fed tanks, however we do a timer that is available in Bunnings operated by a ball valve and is suitable for gravity fed tanks, the code is CO1603.

My tap timer makes a funny noise and does not open.

    If that is the case please try the following recommended solutions:

  • If you are running a low pressure drip system, you need to install an Air Release Valve (102646) at the highest point of your system and above your drippers.
    This breaks this the air in the drip line and allows to suck in air through the air release valve and prevents the drippers from blocking due to dirt.
    This also allows for the diaphragm to work properly.
  • 5-Step-Guide-8pg-Brochure