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
Installation examples
Documents
| Name | Download |
| Installation instruction VTA370/VTA570 |
|
Technical data
Technical data
| Pressure class: | PN 10 |
| Working pressure: | 1,0 MPa |
| max. Differential pressure, Mixing: | VTA570 : 0,3 MPa; VTA370 : 0,1 MPa |
| 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 |
| 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 |
Conformity
SI 2016 No. 1105 (UK)
4MS/KTW-BWGL
ÜA R-15.2.4-22-17605 (AT)
Dimensioning
Accessories and spare parts
Spare parts
| Art No. | Reference | Designation | Note | Data sheet | Instruction manual | |
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37000500 | VTA932 | ESBE VTA932 Exchange kit VTA320, 20 - 43°C | VTA320 | |
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37001200 | VTA937 | ESBE VTA937 Exchange kit VTA370, 20 - 43°C | Applies to VTA370, Art.No. 31104400 | |
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37001700 | VTA937 | ESBE VTA937 Exchange kit VTA370, 20 - 55°C | VTA370 | |
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37001800 | VTA937 | ESBE VTA937 Exchange kit VTA370, 30 - 70°C | VTA370 | |
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37001100 | VTA937 | ESBE VTA937 Exchange kit VTA370, 35 - 60°C | Applies to VTA370, Art.No. 31104000, 31104500 | |
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37101100 | VTA957 | ESBE VTA957 Exchange kit series VTA570, 10 - 30°C | VTA570 | |
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37101200 | VTA957 | ESBE VTA957 Exchange kit series VTA570, 20 - 43°C | VTA570 | |
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37101500 | VTA957 | ESBE VTA957 Exchange kit series VTA570, 20 - 55°C | VTA570 | |
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37101700 | VTA957 | ESBE VTA957 Exchange kit series VTA570, 30 - 70°C | VTA570 | |
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37101300 | VTA957 | ESBE VTA957 Exchange kit series VTA570, 45 - 65°C | VTA570 | |
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98080480 | VTA903 | ESBE VTA903 Adjusting knob, series VTA300 | |
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98080420 | VTA903 | ESBE VTA903 Top knob, series VTA300 | |
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98082130 | VTA903 | ESBE VTA903 Handle knob, series VTA300 | |
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Connection kit KTD200, KTD300
| Art No. | Reference | Designation | Note | Data sheet | Instruction manual | |
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36552200 | KTD212 | 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. | |
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36552400 | KTD312 | 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. | |
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36552300 | KTD212 | 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. | |
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36552500 | KTD312 | 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. | |
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Connection kit KCD300
| Art No. | Reference | Designation | Note | Data sheet | Instruction manual | |
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36552900 | KCD313 | 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. | |
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Download area
Download area
| Type | Preview | Download |
| Data Sheet | VTA370, VTA570 |
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| Installation instruction | VTA370/VTA570 |
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| Certificate | Declaration of Conformity, VTA370/VTA570 |
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| Certificate | Declaration of Conformity UKCA, VTA370/VTA570 |
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| Certificate | Building Product Declaration BPD3, VTA370 |
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| Certificate | Building Product Declaration BPD3, VTA570 |
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| Certificate | ÜA R-15.2.4-22-17605 (AT), VTA370/VTA570 |
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| Certificate | EAC certificate (RU), VTA370/VTA570 |
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| Certificate | UKRSEPRO certificate (UA), VTA370/VTA570 |
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| Approval | PZH-certificate (PL), VTA370/VTA570 |
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| Image | VTA372, high res |
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| Image | VTA377, high res |
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| Image | VTA378, high res |
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| Image | VTA572, high res |
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| Image | VTA577, high res |
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| Image | VTA578, high res |
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| 2D Image | VTA570 |
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| 2D Image | VTA577 |
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| 2D Image | VTA578 |
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| 3D drawing (stp file) | VTA372 G 1" |
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| 3D drawing (stp file) | VTA378 G 1" + RN 1" |
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| 3D drawing (stp file) | VTA572 G 1" |
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| 3D drawing (stp file) | VTA572 G 1¼" |
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| 3D drawing (stp file) | VTA578 G 1" + RN 1" |
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Related materials
Related products
 |
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 |
VTF320 | Flow limitation valves for potable hot water circulation systems | Data Sheet | Installation instruction | |
 |
VTG140 | The Series VTG140 can be used in many different types of heating applications but is specially dedicated for underfloor heating. | Data Sheet | Installation instruction | |
 |
VTS550 | The series VTS550 for domestic hot water distribution connected to solar heating systems. | Data Sheet | Installation instruction | |
 |
VTA350, VTA550 | The series VTA350/VTA550 for domestic hot water distribution, anti-scalded tempering in line applications. | Data Sheet | Installation instruction | Installation Instruction |
 |
VTA320, VTA520 | The series VTA320/VTA520 for domestic hot water distribution, anti-scalded tempering in line applications. | Data Sheet | Installation instruction | Installation Instruction |
Applications
Applications
Modulating heatsource with radiator circuit and independent underfloor heating.
Products
VTA370, VTA570
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.
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.