VTG141, Internal and external thread
VTG141, Internal and external thread

Thermostatic mixing valve


The VTG140 series are 4-way thermostatic valves dedicated for heating applications with focus on underfloor heating. The special design of the valve allows mirroring the connection to the manifold in an easy way and eliminates the need for additional connection components. The temperature range 20-55°C is convenient for underfloor heating from the start-up of the system to its normal working conditions.

  • Left or right connection to the UFH manifold
  • High kvs value
  • Easy setting of the temperature via knob
  • Compact design

Product range

Series VTG141, Internal and external thread
Art.no.ReferenceTemperature range °CKvs** Kvs-value in m3/h at a pressure drop of 1 bar.Connection EConnection FA mmB mmC mmD mmWeight kgNoteNTCNTC = National Trade Code
31810100VTG14120-553,4Rp ¾"G 1"8446max 60700,75  

Installation support

Installation examples
Under floor Heating_10A-01
Thermostatic regulated underfloor heating with one zone.
3-way connection

Technical data

Suitable application area
  • Floor heating
Secondary alternative
  • Radiator heating
Technical data
Pressure class: PN 10 
Working pressure: 1,0 MPa
Max. differential pressure, Mixing: 0,1 MPa
Media temperature, continuosly max.: 95 °C
temporarily max.: 100 °C
min.: 0 °C
Temperature stability: ±3 °C
Connection, Internal thread (Rp): EN 10226-1 
External thread (G): ISO 228/1 
Material, Valve housing and other metal parts with fluid contact: Dezincification resistant brass, DZR 
Surface treatment: Nickel-plated 
Conformity PED 2014/68/EU, article 4.3 
Valves are designed for Designed for_VTG140_en_A-01
Dimensioning $name
Dimensioning guide - Please see data sheet

Accessories and spare parts

Spare parts
ImageArt.no.ReferenceDesignationNational trade codeNoteData sheetInstructions manual


Exchange kit VTA937, 20 - 55°C.
37001700VTA937Exchange kit, 20 - 55°C VTA370 

Download area

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Data Sheet VTG140
Installation instruction VTG140
3D drawing (stp file) VTG141, Rp¾" + G1"

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VTA370, VTA570

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Related applications

Underfloor heating