Load valve
VTC300
- Accurate control of the return water temperature.
- Easy installation. No need of adjustment valve.
- Easy but normally not required maintenance.
The series VTC300 is a compact and accurate load valve used for solid fuel boilers up to 30 kW. The load valve makes sure that the boiler gets up to a high combustion temperature so as to ensure the lowest possible emissions. Above all, the valves make sure that the return temperature to the boiler is kept high and guaranteed over the entire combustion cycle which enables a higher level of boiler efficiency, reduced tarring and increased life span of the boiler.
Product range
VTC311, Internal thread
| Art.no. | Reference | DN | Kvs | Opening temperature | Connection | A [mm] | B [mm] | C [mm] | D [mm] | Weight [kg] |
| 51000100 | VTC311 | 20 | 3,2 | 45 ± 2°C | Rp ¾" | 70 | 42 | 42 | 46 | 0,53 |
| 51000200 | VTC311 | 20 | 3,2 | 55 ± 2°C | Rp ¾" | 70 | 42 | 42 | 46 | 0,53 |
| 51000300 | VTC311 | 20 | 3,2 | 60 ± 2°C | Rp ¾" | 70 | 42 | 42 | 46 | 0,53 |
VTC312, External thread
| Art.no. | Reference | DN | Kvs | Opening temperature | Connection | A [mm] | B [mm] | C [mm] | D [mm] | Weight [kg] |
| 51000800 | VTC312 | 15 | 2,8 | 45 ± 2°C | G ¾" | 70 | 42 | 42 | 46 | 0,48 |
| 51000900 | VTC312 | 15 | 2,8 | 55 ± 2°C | G ¾" | 70 | 42 | 42 | 46 | 0,48 |
| 51001000 | VTC312 | 15 | 2,8 | 60 ± 2°C | G ¾" | 70 | 42 | 42 | 46 | 0,48 |
| 51001500 | VTC312 | 20 | 3,2 | 45 ± 2°C | G 1" | 70 | 42 | 42 | 46 | 0,51 |
| 51001600 | VTC312 | 20 | 3,2 | 55 ± 2°C | G 1" | 70 | 42 | 42 | 46 | 0,51 |
| 51001700 | VTC312 | 20 | 3,2 | 60 ± 2°C | G 1" | 70 | 42 | 42 | 46 | 0,51 |
VTC317, Pump flange and external thread
| Art.no. | Reference | DN | Kvs | Opening temperature | Connection | A [mm] | B [mm] | C [mm] | D [mm] | Weight [kg] |
| 51002300 | VTC317 | 20 | 3,2 | 55 ± 2°C | PF 1½", G 1" | 75 | 42 | 42 | 57 | 0,57 |
| 51002400 | VTC317 | 20 | 3,2 | 60 ± 2°C | PF 1½", G 1" | 75 | 42 | 42 | 57 | 0,57 |
VTC318, Rotating nut and external thread
| Art.no. | Reference | DN | Kvs | Opening temperature | Connection | A [mm] | B [mm] | C [mm] | D [mm] | Weight [kg] |
| 51002900 | VTC318 | 20 | 3,2 | 45 ± 2°C | RN 1", G 1" | 70 | 42 | 42 | 46 | 0,49 |
| 51003000 | VTC318 | 20 | 3,2 | 55 ± 2°C | RN 1", G 1" | 70 | 42 | 42 | 46 | 0,49 |
Installation support
Replace thermostat in VTC300
Installation examples
Documents
| Name | Download |
| Installation instruction VTC300 |
|
Technical data
Technical data
| Pressure class: | PN10 |
| Differential pressure, max.: | Mixing: 100 kPa; Diverting: 30 kPa |
| Leakrate A - AB: | Tight sealing |
| Leakrate B - AB: | max. 3% of Kvs |
| Rangeability Kv/Kv min: | 100 |
| Media, Heating water: | in accordance with VDI2035 |
| Media, Water/Glycol mixtures: | max. 50 % |
| Media, Water/Ethanol mixtures: | max. 28 % |
| Media temperature, max.: | +100 °C |
| Media temperature, min.: | 0 °C |
| Connections, Internal thread (G): | EN 10226-1 |
| Connections, External thread (G): | ISO 228/1 |
| Material, Valve housing and other metal parts with fluid contact: | Brass DZR, CW 625N (resistant to dezincification) |
Conformity
Flow pattern
Dimensioning
Accessories and spare parts
Options
| Art No. | Reference | Designation | Note | |
 |
57000100 | VTC931 | ESBE VTC931 Thermostat 45°C | |
|
57000200 | VTC931 | ESBE VTC931 Thermostat 55°C | |
|
57000300 | VTC931 | ESBE VTC931 Thermostat 60°C | Load valve VTC317 |
|
57000400 | VTC931 | ESBE VTC931 Thermostat 70°C | |
|
57000500 | VTC931 | ESBE VTC931 Thermostat 80°C |
Spare parts
| Art No. | Reference | Designation | Note | |
|
57000600 | VTC931 | ESBE VTC931 Thermostat, 42°C |
Download area
Download area
| Type | Preview | Download |
| Data Sheet | VTC300 |
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| Installation instruction | VTC300 |
|
| Certificate | Declaration of Conformity, VTC300 |
|
| Certificate | Building Product Declaration BPD3, VTC300 |
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| Certificate | EAC certificate (RU), VTC300 |
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| Certificate | Certificate of conformity UA, VTC300 |
|
| Image | VTC311, high res |
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| Image | VTC312, high res |
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| Image | VTC317, high res |
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| Image | VTC318, high res |
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| 2D Image | VTC310 |
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| 2D Image | VTC317 |
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Related materials
Related products
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ATA200 | The series ATA200 is a control device for regulating the temperature of solid fuel boilers. | Data Sheet | Installation instruction | |
 |
VTC500 | The series VTC500 is a thermic valve used for solid fuel boilers up to 150 kW. | Data Sheet | Installation instruction | |
 |
SFK100 | The Series SFK100 is a load unit dedicated to solid fuel boilers | Data Sheet | Installation instruction | Installation instruction |
 |
VTC400 | The Series VTC400 are load valves with higher kvs values and flexibility. Available with fixed and adjustable temperature setting. | Installation instruction | ||
 |
CTF150 | The series CTF150 is typically used for on/off control of circulation pumps and load units. | Data Sheet | Installation instruction | |
 |
LTC300 | The series LTC300 is a load unit with integrated high efficiency pump. | Data Sheet | Installation instruction | |
 |
VST200 | The series VST200 prevents excess temperatures in solid fuel fired boilers. | Data Sheet | Installation instruction |
Applications
Applications
Efficient storage tank loading with circulation pump of own choise.