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] |
51002200 | VTC317 | 20 | 3,2 | 45 ± 2°C | PF 1½", G 1" | 75 | 42 | 42 | 57 | 0,57 |
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 |
51003100 | VTC318 | 20 | 3,2 | 60 ± 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 |
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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 |
Conformity: | PED 2014/68/EU, article 4.3 Pressure Equipment in conformity with PED 2014/68/EU, article 4.3 (sound engineering practice). According to the directive the equipment shall not carry any CE-mark. |
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) |
Flow pattern


Dimensioning

Accessories and Spare Parts
Options
Art No. | Reference | Designation | Description | Note | |
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57000100 | VTC931 | ESBE VTC931 Thermostat 45°C | Thermostat VTC931, 45°C. | |
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57000200 | VTC931 | ESBE VTC931 Thermostat 55°C | Thermostat VTC931, 55°C. | |
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57000300 | VTC931 | ESBE VTC931 Thermostat 60°C | Thermostat VTC931, 60°C. | Load valve VTC317 |
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57000400 | VTC931 | ESBE VTC931 Thermostat 70°C | Thermostat VTC931, 70°C. | |
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57000500 | VTC931 | ESBE VTC931 Thermostat 80°C | Thermostat VTC931, 80°C. |
Spare parts
Art No. | Reference | Designation | Description | Note | |
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57000600 | VTC931 | ESBE VTC931 Thermostat, 42°C | Thermostat VTC931 42°C |
Download area
Download area
Type | Preview | Download |
Data Sheet | VTC300 |
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Installation instruction | VTC300 |
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Certificate | Declaration of Conformity VTC300 |
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Certificate | Building Product Declaration BPD3, VTC300 (en) |
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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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Applications
Applications
Solid fuel system with additional boiler.
Efficient storage tank loading with circulation pump of own choise.