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NBS Source

Rada 215-t3 bc Thermostatic Mixing Valve

Rada Third party certifications:
  • BSI Kitemark

    BSI Kitemark

    Certificate type

  • QA Certificate

    QA Certificate

    Certificate type

1/2" concealed thermostatic mixing valve suitable for group showering.

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  • Approved for use in all UK healthcare premises.
  • Suitable for group showering.


A ½" surface mounted thermostatic mixing valve, incorporating a sealed cartridge. Please note this requires separate outlet flow control.

Features and benefits:

  • Supplied with integral strainers, check valves and a Radatherm service-free cartridge.
  • Units incorporate swivel elbows with 15 mm compression connectors, which can be converted to ½" BSP union if required.

General information







Body: DZR brass nickel plated.


Two year

Two years parts and labour as standard.

Five year

Extended to five years parts and labour if commissioned by Rada. UK only.


Pr_40_20_87_81 Shower thermostatic water supply setsPrimary


S90/680 Thermostatic mixing valves

S90/680 Thermostatic mixing valves

Product range

Sports and Leisure
Student Accommodation

Specification data - Shower thermostatic water supply sets


Wall mounted thermostatic shower mixer valve.





DZR brass nickel plated.

Finish and colour

Chrome plated.

Flow rate (maximum)

35 L/min.

At mid blend.

Water supply temperature (maximum)


Factory pre-set maximum outlet temperature.

Integral accessories

Integral strainers, check valves, cartridge, swivel elbows with 15 mm compression connectors.


Inlet and outlet - ½" BSP external union or 15 mm compression fittings.

Standard connections are hot-left, cold-right, outlet-top, when facing the control.


3 L/min (minimum).

Minimum flow rate at mid blend (which equates to a maximum pressure loss of 1.8 bar).



10:1 (in favour of either supply).


10 bar (maximum).

Operating temperature

Minimum temperature differential, blend to either supply: 12°C; Optimum thermostatic control range: 30°C to 50°C; Minimum cold water temperature: 1°C; Maximum hot water temperature: 85°C.

Note: The mixing valve can accept temporary temperature excursions above 85°C without damage, however, operation of the mixing valve at such elevated temperatures is not recommended. For reasons of general safety, hot water storage supply temperatures should ideally be maintained at between 60°C and 65°C where serving ablutionary requirements.


The mixing valve does not have integral flow control: appropriate provision must be made for this in the outlet pipework.

Water pressure

(Dynamic supply pressure)

0.15 bar (minimum), 5.0 bar (maximum).

Digital objects

Platform Compatible Version Certified to

Revit 2016




Download now from NBS National BIM Library

Third party certifications

  • BS 7942 : LP-S Low pressure shower - HP-S High pressure shower
  • Sanitary tapware - BS EN 1111 : Thermostatic mixing valves (PN10) General technical specification
  • Sanitary tapware - BS EN 1287 : Low pressure thermostatic mixing valves. General technical specification
  • Buildcert: Certificate - ETC/14/0597 : Buildcert TMV3 Thermostatic Mixing Valve Scheme approved.
  • Water Regulations Advisory Scheme (WRAS) approved

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