01442 823 123 enquiries@arrowvalves.co.uk

Automatic Tank Purge System /24h

Automatic Tank Purge System, to assist with legionella control where applicable  e.g. infrequent use, warm environment, aerosol spray applications. Replenishes the water in the tank and runs the pump for a few seconds every day.
Product Code: BTHW-OP2
Shipping cost will be applied at checkout.

Additional Information

Fluid Category 5 / Booster Pumps - Max. Flow Rate No
Fluid Category 5 / Booster Pumps - Outlet Pressure No
Fluid Category 5 / Booster Pumps - Inlet Size No
Fluid Category 5 / Booster Pumps - Outlet Size No
Fluid Category 5 / Booster Pumps - Voltage 230 V
Fluid Category 5 / Booster Pumps - Number of Pumps No
Fluid Category 5 / Booster Pumps - Cistern Size No
Fluid Category 5 / Booster Pumps - Powered Yes


Purges the contents of the tank every 24 hours for legionella control.

Downloads & Resources

Specification Clauses

Where indicated on the drawing an Ablution Plant unit – model BTHW-1 shall be installed – as manufactured and distributed by Arrow Valves Ltd – Tel 01442 823123 www.arrowvalves.co.uk. The assembly shall provide hot water at a safe temperature via the integral Break Tank and Booster pump. The pump shall be continuously rated, feature brass wetted parts and be acoustically attenuated with anti-vibration mounts. The output pressure shall be 1.7 bar @ 0.10 Lt/s and a closed valve head of 2.2 bar. The unit shall be housed in a powder coated steel cabinet which shall be mounted on a wall at a serviceable height. The unit shall incorporate a 10 Lt Water Heater and the thermostat shall be to set to 62oC and blended with an adjustable Thermostatic Mixing Valve (TMV3). The outlet temperature shall be adjusted on site to provide an outlet temperature of 38oC. A volt free BMS fault relay shall be provided – model BTBMS3. The unit shall be acoustically attenuated with internal insulation. A 15 mm supply is required, which must maintain a dynamic pressure of 0.8 bar. The manufacturer’s flexible hose with servicing valve and strainer (supplied) shall be installed. The 22 mm overflow and 15 mm Safety Relief Valve shall discharge in a conspicuous manner.