Load valve
VTC400
- accurate control of the return water temperature
- high kvs value
- available fixed and adjustable temperature setting
- wide range of temperatures
The ESBE thermic valves series VTC400 are designed for applications with boilers, which require return temperature control. Maintaining a high and stable return temperature means a higher level of boiler efficiency, reduced tarring and increased life span of boiler.
Product range
VTC412, Fixed temperature
![VTC410.png](/storage/A8AC07E4BE4C8029889CA7A46C9E96CDD740B29F0FB3F098E00E73B0A37F697F/270564217ddb4ab2a08228b6bb662157/160-160-0-png.Png/media/131446706ef74b3ab63a6cd702fde23b/VTC410.png)
![VTC412 front_A-01.png](/storage/825C97040B67DE70873A202B1739630E0D7958BB3A117BF04B0AD0F8B41B99FE/3e20b8308c26436da746dfd056511e12/160-160-0-png.Png/media/ac372026f7fe4a859c5c414aa03d1f5b/VTC412%20front_A-01.png)
![VTC412 side_A-01.png](/storage/CF5B3D45E1AFB5CD3A89EE1D7A9B0E7079579C339E4C25D76D12D46AF6214141/4e14752d84064234b437282c8b5ee361/160-160-0-png.Png/media/b323447fc58e4acf8090200366c5451b/VTC412%20side_A-01.png)
Art.no. | Reference | DN | Kvs | Opening temperature | Connection | A [mm] | B [mm] | C [mm] | D [mm] | Weight [kg] |
51060100 | VTC412 | 25 | 5,5 | 50 ± 4°C | G 1" | 84 | 62 | 48 | 56 | 0,69 |
51060200 | VTC412 | 25 | 5,5 | 55 ± 4°C | G 1" | 84 | 62 | 48 | 56 | 0,69 |
VTC422, Adjustable temperature
![VTC420.png](/storage/C8D6466D28EF50D445C3FDCB4152AFCC2ADFA897B652EEEBA110F98A97910E0A/32a48c24987f4d3b8212da0eaca9de3c/160-160-0-png.Png/media/8644b944dd894e2eb643a2d492368eaf/VTC420.png)
![VTC422 front_A-01.png](/storage/1ACBA1596BB1BF3E9FF989064DF755226F23B2D1CAA5286FA7F99EC7332987D5/8229e4ad211b4eedbfd355f36df8dad8/160-160-0-png.Png/media/b03f08b51d724c6c8b3b295bf0daa9f6/VTC422%20front_A-01.png)
![VTC422 side_A-01.png](/storage/6363CC9309B5D3E460DB6C301BF3FAC05DF79E1E478106C0EFAE0F3E46C3BE60/5cedb248bcec44bfb4400e6b80fb9f6b/160-160-0-png.Png/media/ce83e95d3ae2450d9765c5577d018ed2/VTC422%20side_A-01.png)
Art.no. | Reference | DN | Kvs | Opening temperature range | Connection | A [mm] | B [mm] | C [mm] | D [mm] | Weight [kg] |
51060600 | VTC422 | 25 | 4,5 | 50‒70 ± 4°C | G 1" | 84 | 62 | 60 | 56 | 0,77 |
Installation support
Installation examples
![Installation examples](/storage/8DE173E645BD62685DDB681754A8166C58AEA8F29B20DF2BAB0DB6938EC6D28B/fc8af0f52ca04220a01936f811a195ae/png/media/bd796c334424483fb08605e0113d5783/VTC300_VTC500_Mixing-01.png)
![](/storage/442794A0C5706C3980D4043CAD37E47E2DBFBD4C923112CCAB9379285D8425D0/3b6933b29dcd48738d4ee516cb8cb2f9/png/media/11693e66eae8413dbd2675b5c3e2d219/VTC300_VTC500Diverting-01.png)
![](/storage/BA21D2CABE27DD8E01CA7BD62CD5D71BE79314143B82B669DE7D7C674F800B46/693be498c4c14411b1a839a5d71310d6/png/media/3e63fff9c447416c98c1ef2818e8c56d/VTD300_1-01.png)
Documents
Name | Download |
Installation instruction VTC400 |
|
Technical data
Technical data
Pressure class: | PN10 |
Differential pressure, max.: | Mixing: 100kPa; Diverting: 30kPa |
Leakrate A - AB: | Tight sealing |
Leakrate B - AB: | Tight sealing |
Rangeability: | 100 |
Connections: | External thread (G), ISO 228/1 |
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 |
Temperature stability**: | ± 4 °C |
**Temperature stability conditions are applicable when hot water from primary circuit is >10°C warmer than mixed temperature and return water from secondary circuit is >20°C colder than mixed temperature. | |
Material, Valve housing and other metal parts with fluid contact: | Dezincification resistant brass, DZR |
Conformity
SI 2016 No. 1105 (UK)
![](/storage/D112415CF1FB9E5D58E7F7F5ECD1AD2EE83CCF25FE83BABCF5A3C942DA7E9D96/ae1092b9e2ff4856860ac56de770ee98/png/media/bba1d4a50094459e99aa95f483c80917/EAC_black-01.png)
![](/storage/321497FA0E48EAA3DA58BD28AAA462CD860FCCAA1D01924844C733E462B13C63/1d12233666764a75932c6c24b532b494/png/media/d751858a06804ef8b5cf7fbee2f7ca1a/UKRSEPRO.png)
Flow pattern
![Flow pattern](/storage/5D01DFA24A2ACB4C8490CAF02EC19094721C58469C8AB99733CB5156A3341A93/3288046a3b3b4f1380a74187fa9f7fce/png/media/e4fddd90df0041999b780689e0d8bf9d/Mixing_B-01.png)
![](/storage/A34DE671287E75B74C462A18128D6FBF71EBC9C186DF28823B10C7A26EF5A83A/11a6aa6808c14ab990b4720779d2c9f8/png/media/ed30ac00f96a45938b00364b4353d8df/Diverting_B-01.png)
Dimensioning
Accessories and spare parts
Spare parts
Download area
Download area
Type | Preview | Download |
Data Sheet | VTC400 |
|
Installation instruction | VTC400 |
|
Certificate | Declaration of Conformity, VTC400 |
|
Certificate | Declaration of Conformity UKCA, VTC400 |
|
Certificate | Building Product Declaration BPD3, VTC400 |
|
Certificate | EAC certificate (RU), VTC400 |
|
Certificate | Certificate of conformity UA, VTC400 |
|
Image | VTC412, high res |
|
Image | VTC422, high res |
|
2D Image | VTC412 |
|
2D Image | VTC422 |
|
3D drawing (stp file) | VTC412, DN25 |
|
3D drawing (stp file) | VTC422, DN25 |
|
Quick links
Quick links
ESBE APP |
ESBE Catalogue Online |
FAQ Solid fuel products |