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

Installation examples
Mixing
Diverting

Documents

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

Flow pattern
Mixing
Diverting

Dimensioning

Dimensioning
Please see data sheet
Accessories and Spare Parts

Options

Art No. Reference Designation Description Note
57000100 57000100 VTC931 ESBE VTC931 Thermostat 45°C Thermostat VTC931, 45°C.
57000200 57000200 VTC931 ESBE VTC931 Thermostat 55°C Thermostat VTC931, 55°C.
57000300 57000300 VTC931 ESBE VTC931 Thermostat 60°C Thermostat VTC931, 60°C. Load valve VTC317
57000400 57000400 VTC931 ESBE VTC931 Thermostat 70°C Thermostat VTC931, 70°C.
57000500 57000500 VTC931 ESBE VTC931 Thermostat 80°C Thermostat VTC931, 80°C.

Spare parts

Art No. Reference Designation Description Note
57000600 57000600 VTC931 ESBE VTC931 Thermostat, 42°C Thermostat VTC931 42°C
Download area

Download area

Type Preview Download
Data Sheet VTC300 download
Installation instruction VTC300 download
Certificate Declaration of Conformity VTC300 download
Certificate Building Product Declaration BPD3, VTC300 (en) download
Image VTC311, high res download
Image VTC312, high res download
Image VTC317, high res download
Image VTC318, high res download
2D Image VTC310 download
2D Image VTC317 download
Applications

Applications

Solid fuel system with additional boiler.

Efficient storage tank loading with circulation pump of own choise.