VTC511, Internal thread VTC512, External thread VTC531, Internal thread
VTC511, Internal thread VTC512, External thread VTC531, Internal thread

Load valve

VTC500

The series VTC500 is a thermic valve used for solid fuel boilers up to 150 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.
  • Accurate control of the return water temperature.
  • Easy installation. No need of adjustment valve.
  • The series VTC530 includes shut off valves and insulation. Just add the best suitable pump.
  • Easy but normally not required maintenance.

Product range

VTC511 front_RGB_A-01
VTC511, VTC512
VTC511 side_A-01
VTC531 front_RGB_A-01
VTC531
VTC531 side_A-01
Series VTC511, Internal thread
Art.no.ReferenceDNKvs** Kvs-value in m3/h at a pressure drop of 1 bar.ConnectionOpening temperatureA mmB mmC mmD mmWeight kgNoteNTCNTC = National Trade Code
51020100VTC511259Rp 1"50°C ± 5°C933469470.84Replaces 11400600 
51020200VTC511259Rp 1"55°C ± 5°C933469470.84Replaces 11400700 
51020300VTC511259Rp 1"60°C ± 5°C933469470.84Replaces 11400400 
51021100VTC511259Rp 1"65°C ± 5°C933469470.84  
51020400VTC511259Rp 1"70°C ± 5°C933469470.84Replaces 11400100 
51020500VTC511259Rp 1"75°C ± 5°C933469470.84  
51020600VTC5113214Rp 1 1/4"50°C ± 4°C1053875551.38Replaces 11401100 
51020700VTC5113214Rp 1 1/4"55°C ± 4°C1053875551.38Replaces 11401200 
51020800VTC5113214Rp 1 1/4"60°C ± 4°C1053875551.38Replaces 11400800 
51021200VTC5113214Rp 1 1/4"65°C ± 4°C1053875551.38  
51020900VTC5113214Rp 1 1/4"70°C ± 4°C1053875551.38Replaces 11400200 
51021000VTC5113214Rp 1 1/4"75°C ± 4°C1053875551.38  
Series VTC512, External thread
Art.no.ReferenceDNKvs** Kvs-value in m3/h at a pressure drop of 1 bar.ConnectionOpening temperatureA mmB mmC mmD mmWeight kgNoteNTCNTC = National Trade Code
51021500VTC512259G 1 1/4"50°C ± 5°C933469470.80  
51021600VTC512259G 1 1/4"55°C ± 5°C933469470.80  
51021700VTC512259G 1 1/4"60°C ± 5°C933469470.80  
51022500VTC512259G 1 1/4"65°C ± 5°C933469470.80  
51021800VTC512259G 1 1/4"70°C ± 5°C933469470.80  
51021900VTC512259G 1 1/4"75°C ± 5°C933469470.80  
51022000VTC5123214G 1 1/2"50°C ± 4°C1053875551.31  
51022100VTC5123214G 1 1/2"55°C ± 4°C1053875551.31  
51022200VTC5123214G 1 1/2"60°C ± 4°C1053875551.31  
51022600VTC5123214G 1 1/2"65°C ± 4°C1053875551.31  
51022300VTC5123214G 1 1/2"70°C ± 4°C1053875551.31  
51022400VTC5123214G 1 1/2"75°C ± 4°C1053875551.31  
Series VTC531, Internal thread
Art.no.ReferenceDNKvs** Kvs-value in m3/h at a pressure drop of 1 bar.ConnectionOpening temperatureA mmB mmC mmD mmWeight kgNoteNTCNTC = National Trade Code
51025500VTC531258G 1"50°C ± 4°C197771211102.0  
51025600VTC531258G 1"55°C ± 4°C197771211102.0  
51025700VTC531258G 1"60°C ± 4°C197771211102.0  
51027500VTC531258G 1"65°C ± 4°C197771211102.0  
51025800VTC531258G 1"70°C ± 4°C197771211102.0  
51025900VTC531258G 1"75°C ± 4°C197771211102.0  
51026000VTC531328G 1¼“50°C ± 4°C230771381102.2  
51026100VTC531328G 1¼“55°C ± 4°C230771381102.2  
51026200VTC531328G 1¼“60°C ± 4°C230771381102.2  
51027600VTC531328G 1¼“65°C ± 4°C230771381102.2  
51026300VTC531328G 1¼“70°C ± 4°C230771381102.2  
51026400VTC531328G 1¼“75°C ± 4°C230771381102.2  
51026500VTC531408G 1½"50°C ± 4°C242771431102.3Replaces 11401500 
51026600VTC531408G 1½"55°C ± 4°C242771431102.3Replaces 11401600 
51026700VTC531408G 1½"60°C ± 4°C242771431102.3Replaces 11401300 
51027700VTC531408G 1½"65°C ± 4°C242771431102.3  
51026800VTC531408G 1½"70°C ± 4°C242771431102.3Replaces 11400300 
51026900VTC531408G 1½"75°C ± 4°C242771431102.3  
51027000VTC5315012G 2"50°C ± 4°C260771521102.6  
51027100VTC5315012G 2"55°C ± 4°C260771521102.6  
51027200VTC5315012G 2"60°C ± 4°C260771521102.6  
51027800VTC5315012G 2"65°C ± 4°C260771521102.6  
51027300VTC5315012G 2"70°C ± 4°C260771521102.6  
51027400VTC5315012G 2"75°C ± 4°C260771521102.6  

Installation support

Installation examples
VTC300_VTC500_Mixing-01
Mixing
VTC300_VTC500Diverting-01
Diverting
Installation instruction VTC500

Technical data

Suitable application area
Recommended
  • Heating
Technical data
Pressure class, Series VTC510: PN 10 
Series VTC530: PN 6 
Media temperature, max.: +110 °C
min.: 0 °C
Max. diffential pressure: 100 kPa
Max. diffential pressure A - B: 30 kPa
Leakrate A - AB: max. 1% of Kvs 
Leakrate B - AB: max. 3% of Kvs 
Rangeability Kv/Kv min: 100 
Connections, Internal thread (G): ISO 228/1 
Internal thread (Rp): EN 10226-1 
External thread (G): ISO 228/1 
Material, Valve body and cover: Nodular iron, EN-JS 1050 
Conformity: PED 2014/68/EU, article 4.3 
Flow pattern Mixing_A-01
Diverting_A-01
Dimensioning $name
Dimensioning guide - Please see data sheet

Accessories and spare parts

Options
ImageArt.no.ReferenceDesignationNational trade codeNoteData sheetInstructions manual

VTC951

Thermostat VTC951, 50°C.
57020100VTC951Thermostat 50°C    

VTC951

Thermostat VTC951, 55°C.
57020200VTC951Thermostat 55°C    

VTC951

Thermostat VTC951, 60°C.
57020300VTC951Thermostat 60°C    

VTC951

Thermostat VTC951, 65°C.
57020800VTC951Thermostat 65°C    

VTC951

Thermostat VTC951, 70°C.
57020400VTC951Thermostat 70°C    

VTC951

Thermostat VTC951, 75°C.
57020500VTC951Thermostat 75°C    

VTC952

Thermometer VTC952, 3pcs.
57020600VTC952Thermometer, 3pcs    

VTC953

Insulation VTC953, ≥ DN32.
52070700VTC953Insulation, ≥ DN32    
Spare parts
ImageArt.no.ReferenceDesignationNational trade codeNoteData sheetInstructions manual

LTC922

ESBE LTC922 Jointing set VTC/LTC, 3pcs of fibre gasket 1½".
57020900LTC922Jointing set VTC/LTC, 3pcs of fibre gasket 1½"    

LTC801

ESBE LTC801 Shut-off valves / Adapters 1½" x 1" 3pcs.
57060500LTC801Shut-off valves / Adapters 1½" x 1" 3pcs    

LTC801

ESBE LTC801 Shut-off valves / Adapters 1½" x 1¼" 3pcs.
57060600LTC801Shut-off valves / Adapters 1½" x 1¼" 3pcs    

LTC801

ESBE LTC801 Shut-off valves / Adapters 1½" x 1½" 3pcs.
57060700LTC801Shut-off valves / Adapters 1½" x 1½" 3pcs     

LTC801

ESBE LTC801 Shut-off valves / Adapters 1½" x 2" 3pcs.
57060800LTC801Shut-off valves / Adapters 1½" x 2" 3pcs    

LTC801

ESBE LTC801 Shut-off valves / Adapters 1½" x CPF 28mm 3pcs.
57060900LTC801Shut-off valves / Adapters 1½" x CPF 28mm 3pcs    

LTC801

ESBE LTC801 Shut-off valves / Adapters 1½" x CPF 35mm 3pcs.
57061000LTC801Shut-off valves / Adapters 1½" x CPF 35mm 3pcs    

Download area

Find here direct related product information for download. If you don’t find your specific need here please look further into below mentioned "Quick links" or this website's “Search” and “Support” area.
Data Sheet VTC500
Installation instruction VTC500
Spare Parts Solid fuel products
Replacements Solid fuel products
2D Image VTC510
2D Image VTC530

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