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Rada Thermotap-3L

Rada Thermotap-3L

Third party certifications:
  • BSI Kitemark

    BSI Kitemark

    Certificate type

  • QA Certificate

    QA Certificate

    Certificate type


Basin mounted thermostatic mixing tap with long lever control.

Jump to:
+44 (0)844 571 1777 www.radacontrols.com

A basin mounted thermostatic mixing tap with short or long lever control, and offering single sequential control from cold through to a pre-settable maximum temperature.

Taps are supplied complete with flexible supply tails, check valves, isolators and strainers.

General information


Copper supply tails, Check valves, Isolators, Strainers






Two years parts and labour as standard; Extended to five years parts and labour if commissioned by Rada. UK only

Uniclass 2015

Pr_40_20_87_99 Washbasin thermostatic water supply setsPrimary


N13/30 Washbasins

N13/335 Washbasins

N13/341 Vanity tops with formed washbasins

N13/346 Washing troughs

Specification data - Washbasin thermostatic water supply sets

Product Reference

Rada Thermotap-3S (1.1555.101)

Short lever.

Rada Thermotap-3S Copper (1.555.061)

Short lever.

Rada Thermotap-3L (1.1555.011)

Long lever.

Rade Thermotap-3L Copper (1.1555.062)

Long lever.

Standard product features


  • The Rada Thermotap-3S has a 100 mm long, single lever control for sequential operation from Off through cold (minimum), and warm to hot (preset maximum).
  • The flow rate is limited to 4-6 litres/minute with flow regulators fitted.
  • The Rada Thermotap-3L has a 150 mm long lever control.

Tap hole:

Ranging between 26 mm to 36 mm.


Inlets: 15mm or ½" BSP male and 10 mm stainless steel flexible hoses (supplied).

Pressure/ Flow rates:

  • Minimum dynamic supply pressure: 0.2 bar.
  • Maximum pressure loss ratio: 10:1 (in favour of either supply).
  • Maximum static pressure: 10 bar.
  • Note: Both hot and cold pressures should be nominally equal.

Temperature range:

  • Factory pre-set maximum blend temperature: 41°C.
  • Minimum temperature differential blend to either supply: 10°C.
  • Optimum temperature control range: 35–45°C.
  • Minimum cold water temperature: 5°C.
  • Maximum hot water temperature: 85°C

Note: The thermotap can accept temporary temperature excursions above 85°C without damage, however, operation at such elevated temperatures is not recommended. For safety reasons it is recommended that the hot water storage temperature is maintained at between 60°C and 65°C in ablutionary applications.

The full specification performance outlined below is achieved with a blend set between 35°C and 45°C, supplies of 15°C cold and 65°C hot with nominally balanced pressures.

  • The blended water temperature is maintained within 2°C with a 10°C change in the hot or cold supply.
  • The blended water temperature is maintained within 2°C when either inlet pressure drops by up to 50%.
  • The 'Thermostatic' sensor effects a shut down to seepage within 2 seconds if either supply fails, providing the blended temperature differs from the inlet supply temperatures by at least 10°C.
  • The tap will maintain control with a pressure in balance of up to 3:1 between hot and cold supplies.


  • Body: DZR brass chrome plated.
  • Levers: Chrome plated zinc casting.

Digital objects
PlatformCompatibleVersionCertified to
- 1.0
Revit 2016 4 1.3
- 4 1.3
Download now from NBS National BIM Library
Third party certifications
  • BS 7942 : For high and low pressure use on washbasins
  • BS EN 1111
  • BS EN 1287
  • Buildcert: Certificate - ETC/189/1002 : Buildcert TMV3 Thermostatic Mixing Valve Scheme approved
  • Water Regulations Advisory Scheme (WRAS) approved
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