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, VTC512

VTC531

Series VTC511, Internal thread

Art.no.	Reference	DN	Kvs** Kvs-value in m3/h at a pressure drop of 1 bar.	Connection	Opening temperature	A mm	B mm	C mm	D mm	Weight kg	Note
51020100	VTC511	25	9	Rp 1"	50°C ± 5°C	93	34	69	47	0.84	Replaces 11400600
51020200	VTC511	25	9	Rp 1"	55°C ± 5°C	93	34	69	47	0.84	Replaces 11400700
51020300	VTC511	25	9	Rp 1"	60°C ± 5°C	93	34	69	47	0.84	Replaces 11400400
51021100	VTC511	25	9	Rp 1"	65°C ± 5°C	93	34	69	47	0.84
51020400	VTC511	25	9	Rp 1"	70°C ± 5°C	93	34	69	47	0.84	Replaces 11400100
51020600	VTC511	32	14	Rp 1 1/4"	50°C ± 4°C	105	38	75	55	1.38	Replaces 11401100
51020700	VTC511	32	14	Rp 1 1/4"	55°C ± 4°C	105	38	75	55	1.38	Replaces 11401200
51020800	VTC511	32	14	Rp 1 1/4"	60°C ± 4°C	105	38	75	55	1.38	Replaces 11400800
51021200	VTC511	32	14	Rp 1 1/4"	65°C ± 4°C	105	38	75	55	1.38
51020900	VTC511	32	14	Rp 1 1/4"	70°C ± 4°C	105	38	75	55	1.38	Replaces 11400200

Series VTC512, External thread

Art.no.	Reference	DN	Kvs** Kvs-value in m3/h at a pressure drop of 1 bar.	Connection	Opening temperature	A mm	B mm	C mm	D mm	Weight kg
51021500	VTC512	25	9	G 1 1/4"	50°C ± 5°C	93	34	69	47	0.80
51021600	VTC512	25	9	G 1 1/4"	55°C ± 5°C	93	34	69	47	0.80
51021700	VTC512	25	9	G 1 1/4"	60°C ± 5°C	93	34	69	47	0.80
51022500	VTC512	25	9	G 1 1/4"	65°C ± 5°C	93	34	69	47	0.80
51021800	VTC512	25	9	G 1 1/4"	70°C ± 5°C	93	34	69	47	0.80
51022000	VTC512	32	14	G 1 1/2"	50°C ± 4°C	105	38	75	55	1.31
51022100	VTC512	32	14	G 1 1/2"	55°C ± 4°C	105	38	75	55	1.31
51022200	VTC512	32	14	G 1 1/2"	60°C ± 4°C	105	38	75	55	1.31
51022600	VTC512	32	14	G 1 1/2"	65°C ± 4°C	105	38	75	55	1.31
51022300	VTC512	32	14	G 1 1/2"	70°C ± 4°C	105	38	75	55	1.31

Series VTC531, Internal thread

Art.no.	Reference	DN	Kvs** Kvs-value in m3/h at a pressure drop of 1 bar.	Connection	Opening temperature	A mm	B mm	C mm	D mm	Weight kg	Note
51025500	VTC531	25	8	G 1"	50°C ± 4°C	197	77	121	110	2.0
51025600	VTC531	25	8	G 1"	55°C ± 4°C	197	77	121	110	2.0
51025700	VTC531	25	8	G 1"	60°C ± 4°C	197	77	121	110	2.0
51027500	VTC531	25	8	G 1"	65°C ± 4°C	197	77	121	110	2.0
51025800	VTC531	25	8	G 1"	70°C ± 4°C	197	77	121	110	2.0
51026000	VTC531	32	8	G 1¼“	50°C ± 4°C	230	77	138	110	2.2
51026100	VTC531	32	8	G 1¼“	55°C ± 4°C	230	77	138	110	2.2
51026200	VTC531	32	8	G 1¼“	60°C ± 4°C	230	77	138	110	2.2
51027600	VTC531	32	8	G 1¼“	65°C ± 4°C	230	77	138	110	2.2
51026300	VTC531	32	8	G 1¼“	70°C ± 4°C	230	77	138	110	2.2
51026500	VTC531	40	8	G 1½"	50°C ± 4°C	242	77	143	110	2.3	Replaces 11401500
51026600	VTC531	40	8	G 1½"	55°C ± 4°C	242	77	143	110	2.3	Replaces 11401600
51026700	VTC531	40	8	G 1½"	60°C ± 4°C	242	77	143	110	2.3	Replaces 11401300
51027700	VTC531	40	8	G 1½"	65°C ± 4°C	242	77	143	110	2.3
51026800	VTC531	40	8	G 1½"	70°C ± 4°C	242	77	143	110	2.3	Replaces 11400300
51027000	VTC531	50	12	G 2"	50°C ± 4°C	260	77	152	110	2.6
51027100	VTC531	50	12	G 2"	55°C ± 4°C	260	77	152	110	2.6
51027200	VTC531	50	12	G 2"	60°C ± 4°C	260	77	152	110	2.6
51027800	VTC531	50	12	G 2"	65°C ± 4°C	260	77	152	110	2.6
51027300	VTC531	50	12	G 2"	70°C ± 4°C	260	77	152	110	2.6

Installation support

Installation examples

Mixing

Diverting

Movie

Replace thermostat in VTC500

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

Dimensioning $name

Dimensioning guide - Please see data sheet

Accessories and spare parts

Options

Image	Art.no.	Reference	Designation
VTC951 Thermostat VTC951, 50°C.	57020100	VTC951	Thermostat 50°C
VTC951 Thermostat VTC951, 55°C.	57020200	VTC951	Thermostat 55°C
VTC951 Thermostat VTC951, 60°C.	57020300	VTC951	Thermostat 60°C
VTC951 Thermostat VTC951, 65°C.	57020800	VTC951	Thermostat 65°C
VTC951 Thermostat VTC951, 70°C.	57020400	VTC951	Thermostat 70°C
VTC952 Thermometer VTC952, 3pcs.	57020600	VTC952	Thermometer, 3pcs
VTC953 Insulation VTC953, ≥ DN32.	52070700	VTC953	Insulation, ≥ DN32

Spare parts

Image	Art.no.	Reference	Designation
VTC951 Thermostat VTC951 75°C	57020500	VTC951	Thermostat 75°C
LTC922 ESBE LTC922 Jointing set VTC/LTC, 3pcs of fibre gasket 1½".	57020900	LTC922	Jointing set VTC/LTC, 3pcs of fibre gasket 1½"
LTC801 ESBE LTC801 Shut-off valves / Adapters 1½" x 1" 3pcs.	57060500	LTC801	Shut-off valves / Adapters 1½" x 1" 3pcs
LTC801 ESBE LTC801 Shut-off valves / Adapters 1½" x 1¼" 3pcs.	57060600	LTC801	Shut-off valves / Adapters 1½" x 1¼" 3pcs
LTC801 ESBE LTC801 Shut-off valves / Adapters 1½" x 1½" 3pcs.	57060700	LTC801	Shut-off valves / Adapters 1½" x 1½" 3pcs
LTC801 ESBE LTC801 Shut-off valves / Adapters 1½" x 2" 3pcs.	57060800	LTC801	Shut-off valves / Adapters 1½" x 2" 3pcs
LTC801 ESBE LTC801 Shut-off valves / Adapters 1½" x CPF 28mm 3pcs.	57060900	LTC801	Shut-off valves / Adapters 1½" x CPF 28mm 3pcs
LTC801 ESBE LTC801 Shut-off valves / Adapters 1½" x CPF 35mm 3pcs.	57061000	LTC801	Shut-off valves / Adapters 1½" x CPF 35mm 3pcs

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Data Sheet

VTC500

Installation instruction

VTC500

Certificate

Declaration of Conformity VTC500

Certificate

Building Product Declaration BPD3

Image

VTC511, high res