Thermostatic mixing valve

VTA370, VTA570

  • High flow capacity
  • Protection against excess temperatures.
The series VTA370 and VTA570 are the number one choice for heating and cooling applications. The valves provide a scald safe function, which is important in order to protect e.g. under floor heating pips and also the floor itself from to uncontrolled rise of temperature. 
Product range

VTA372/VTA572, External thread

Art.no. Reference Temp. range [⁰C] Kvs Connection E A [mm] B [mm] C [mm] D [mm] Weight [kg] Note
31700100 VTA572 10 - 30 4,5 G 1" 84 62 60 56 0,86
31700400 VTA572 10 - 30 4,8 G 1¼" 84 62 60 56 0,95
31200100 VTA372 20 - 55 3,4 G 1" 70 42 52 46 0,44
31702100 VTA572 20 - 55 4,5 G 1" 84 62 60 56 0,86
31702200 VTA572 20 - 55 4,8 G 1¼" 84 62 60 56 0,95
31200400 VTA372 30 - 70 3,4 G 1" 70 42 52 46 0,48 Replaces 31105400
31702500 VTA572 30 - 70 4,5 G 1" 84 62 60 56 0,86 Replaces 31700300
31702600 VTA572 30 - 70 4,8 G 1¼" 84 62 60 56 0,95 Replaces 31700600

VTA377/VTA577, Pump flange and external thread

Art.no. Reference Temp. range [⁰C] Kvs Connection E Connection F A [mm] B [mm] C [mm] D [mm] Weight [kg]
31200200 VTA377 20 - 55 3,4 G 1" PF 1½" 86 42 52 56 0,58
31702300 VTA577 20 - 55 4,5 G 1" PF 1½" 100 62 60 56 0,99

VTA378/VTA578, Rotating nut and external thread

Art.no. Reference Temp. range [⁰C] Kvs Connection E Connection F A [mm] B [mm] C [mm] D [mm] Weight [kg]
31200300 VTA378 20 - 55 3,4 G 1" RN 1" 78 42 52 46 0,48
31702400 VTA578 20 - 55 4,5 G 1" RN 1" 93 62 60 56 0,91
Installation support

Operation

Operation
VTA370
VTA570

Installation examples

Installation examples
1
2
3
4
5

Documents

Technical data

Technical data

Pressure class: PN 10
Working pressure: 1,0 MPa
max. Differential pressure, Mixing: VTA570 : 0,3 МПа;
VTA370 : 0,1 МПа
Temperature stability: Temp. range 10-30 °C: ±2 °C*;
Temp. range 20-55 °C, 30-70 °C: ±3 °C**;
* Valid at unchanged cold/return water pressure, minimum flow rate 9 l/min. Minimum temperature difference between cold water inlet and mixed water outlet 3°C and recommended maximum temperature difference between return water and mixed water outlet: 10°C. ** Valid at unchanged hot/return water pressure, minimum flow rate 9 l/min. Minimum temperature difference between hot water inlet and mixed water outlet 10°C and recommended maximum temperature difference between return water and mixed water outlet: 10°C.
Connections: External thread (G), ISO 228/1
Conformity:

PED 2014/68/EU, article 4.3

Media temperature, Temp. range 10-30 °C max.: +65 °C
Media temperature, Temp. range 20-55 °C, 30-70 °C continuosly max.: +95 °C
Media temperature, Temp. range 20-55 °C, 30-70 °C temporarily max.: +100 °C
Media temperature, min.: 0 °C
Material, Valve housing and other metal parts with fluid contact: Dezincification resistant brass, DZR

Dimensioning

Dimensioning
Please see data sheet
Accessories and Spare Parts

Spare parts

Art No. Reference Designation Description Note Data sheet Instruction manual
37000500 37000500 VTA932 ESBE VTA932 Exchange kit VTA320, 20 - 43°C Exchange kit VTA932, 20 - 43°C. VTA320 download download
37001200 37001200 VTA937 ESBE VTA937 Exchange kit VTA370, 20 - 43°C Exchange kit VTA937, 20 - 43°C Applies to VTA370, Art.No. 31104400 download download
37001700 37001700 VTA937 ESBE VTA937 Exchange kit VTA370, 20 - 55°C Exchange kit VTA937, 20 - 55°C. VTA370 download download
37001800 37001800 VTA937 ESBE VTA937 Exchange kit VTA370, 30 - 70°C Exchange kit VTA937, 30 - 70°C. VTA370 download download
37001100 37001100 VTA937 ESBE VTA937 Exchange kit VTA370, 35 - 60°C Exchange kit VTA937, 35 - 60°C. Applies to VTA370, Art.No. 31104000, 31104500 download download
37101100 37101100 VTA957 ESBE VTA957 Exchange kit series VTA570, 10 - 30°C Exchange kit VTA957, series VTA570, 10 - 30°C. VTA570 download download
37101200 37101200 VTA957 ESBE VTA957 Exchange kit series VTA570, 20 - 43°C Exchange kit VTA957, series VTA570, 20 - 43°C. VTA570 download download
37101500 37101500 VTA957 ESBE VTA957 Exchange kit series VTA570, 20 - 55°C Exchange kit VTA957, series VTA570, 20 - 55°C. VTA570 download download
37101700 37101700 VTA957 ESBE VTA957 Exchange kit series VTA570, 30 - 70°C Exchange kit VTA957, series VTA570, 30 - 70°C. VTA570 download download
37101300 37101300 VTA957 ESBE VTA957 Exchange kit series VTA570, 45 - 65°C Exchange kit VTA957, series VTA570, 45 - 65°C. VTA570 download download
98080480 98080480 VTA903 ESBE VTA903 Adjusting knob, series VTA300 Adjusting knob VTA903, series VTA300. download download
98080420 98080420 VTA903 ESBE VTA903 Top knob, series VTA300 Top knob VTA903, series VTA300. download download
98082130 98082130 VTA903 ESBE VTA903 Handle knob, series VTA300 Handle knob VTA903, series VTA300. download download

Connection kit KTD200, KTD300

Art No. Reference Designation Description Note Data sheet Instruction manual
36552200 36552200 KTD212 Connection kit with external thread R ¾" for use on externally threaded valves G 1". Connection kit with external thread R ¾" for use on externally threaded valves G 1". One check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download
36552400 36552400 KTD312 Connection kit with external thread R ¾" for use on externally threaded valves G 1". Connection kit with external thread R ¾" for use on externally threaded valves G 1". Two check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download
36552300 36552300 KTD212 Connection kit with external thread R 1" for use on externally threaded valves G 1¼". Connection kit with external thread R 1" for use on externally threaded valves G 1¼". One check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download
36552500 36552500 KTD312 Connection kit with external thread R 1" for use on externally threaded valves G 1¼". Connection kit with external thread R 1" for use on externally threaded valves G 1¼". Two check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download

Connection kit KCD300

Art No. Reference Designation Description Note Data sheet Instruction manual
36552900 36552900 KCD313 Connection kit with compression fittings CPF 22mm for use on externally threaded valves G1". Connection kit with compression fittings CPF 22mm for use on externally threaded valves G1". Two check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download
Download area

Download area

Type Preview Download
Data Sheet VTA370, VTA570 download
Installation instruction VTA370/VTA570 download
Certificate Declaration of Conformity VTA370, VTA570 download
Certificate Building Product Declaration BPD3, VTA370 download
Certificate Building Product Declaration BPD3, VTA570 download
Certificate EAC certificate (RU) download
Approval PZH-certificate (PL) download
Image VTA372, high res download
Image VTA377, high res download
Image VTA378, high res download
Image VTA572, high res download
Image VTA577, high res download
Image VTA578, high res download
2D Image VTA570 download
2D Image VTA577 download
2D Image VTA578 download
3D drawing (stp file) VTA372 G 1" download
3D drawing (stp file) VTA378 G 1" + RN 1" download
3D drawing (stp file) VTA572 G 1" download
3D drawing (stp file) VTA572 G 1¼" download
3D drawing (stp file) VTA578 G 1" + RN 1" download
Applications

Applications

Modulating heatsource with radiator circuit and independent underfloor heating.

Radiator circuit with multiple under floor heating zones.

Heat system with radiator circuit and under floor system.

Domestic hot water control and termostatic under floor heating control in systems with district heating.

Thermostatic regulated under floor heating with multiple zones.

Heat system with independent radiator circuit and under floor system.

Radiator circuit together with one under floor heating zone.

Heat system with independent radiator circuit and under floor system.

Heat system with radiator circuit and under floor system.

Thermostatic regulated under floor heating with one zone.