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Danfoss AVTB Thermostatic Valves
Temperature controller AVTB (PN 16)
Danfoss AVTB is self-acting temperature controller used to control the water temperature in hot water tanks, heat exchangers, oil preheaters, etc. Controller closes on rising temperature.
The controller has a control valve, thermostatic actuator and handle for temperature setting. Thermostatic actuator consist of a bellows, capillary tube and sensor.
The complete AVTB valve has a setting knob, a valve body, a bellows element with capillary tube and a sensor pocket.
The valve is used to control the water temperature in hot-water tanks, heat exchangers, oil preheaters etc.
Main data:
• DN 15, 20, 25
• kVS 1.9, 3.4, 5.5 m3/h
• PN 16
• Setting range: 0…30 °C / 20…60 °C / 30…100 °C
• Temperature:
- Circulation water / glycolic water up to 30%: -25 … +130 °C
• Connections:
- Int. thread
- Ext. thread (weld-on and ext. thread tailpieces)
• Flow or return mounting, depending on sensor type.
Materials of parts in contact with medium:
Valve body - Hot-brass stamping MS58
Diaphragms - Ethylene-propylene rubber
Valve plate - Nitrile rubber
Valve seat - Chrome steel
Sensor pocket - MS63 brass or 316 stainless steel option
|
Code No. |
DN (mm) |
kvs (m3/h) |
PN (bar) |
tmax (°C) |
Connection type |
Min. setting temp. (°C) |
Max. setting temp.(°C) |
Sensor Ømm |
|
003N2232 |
15 |
1.9 |
16 |
130 |
Int. thread |
0 |
30 |
18Ø x 210 |
|
003N5101 |
15 |
1.9 |
16 |
130 |
Ext. thread |
0 |
30 |
18Ø x 210 |
|
003N5114 |
15 |
1.9 |
16 |
130 |
Ext. thread |
20 |
60 |
9.5Øx180 |
|
003N5141 |
15 |
1.9 |
16 |
130 |
Ext. thread |
30 |
100 |
9.5Øx150 |
|
003N8141 |
15 |
1.9 |
16 |
130 |
Int. thread |
30 |
100 |
9.5Øx150 |
|
003N8229 |
15 |
1.9 |
16 |
130 |
Int. thread |
20 |
60 |
9.5Øx180 |
|
003N3232 |
20 |
3.4 |
16 |
130 |
Int. thread |
0 |
30 |
18Ø x 210 |
|
003N5102 |
20 |
3.4 |
16 |
130 |
Ext. thread |
0 |
30 |
18Ø x 210 |
|
003N5115 |
20 |
3.4 |
16 |
130 |
Ext. thread |
20 |
60 |
9.5Ø x 180 |
|
003N5142 |
20 |
3.4 |
16 |
130 |
Ext. thread |
30 |
100 |
9.5Ø × 150 |
|
003N8142 |
20 |
3.4 |
16 |
130 |
Int. thread |
30 |
100 |
9.5Ø × 150 |
|
003N8230 |
20 |
3.4 |
16 |
130 |
Int. thread |
20 |
60 |
9.5Ø x 180 |
|
003N4232 |
25 |
5.5 |
16 |
130 |
Int. thread |
0 |
30 |
18Ø x 210 |
|
003N5103 |
25 |
5.5 |
16 |
130 |
Ext. thread |
0 |
30 |
18Ø x 210 |
|
003N5116 |
25 |
5.5 |
16 |
130 |
Ext. thread |
20 |
60 |
9.5Ø x 180 |
|
003N5143 |
25 |
5.5 |
16 |
130 |
Ext. thread |
30 |
100 |
9.5Ø × 150 |
|
003N8143 |
25 |
5.5 |
16 |
130 |
Int. thread |
30 |
100 |
9.5Ø x 150 |
|
003N8253 |
25 |
5.5 |
16 |
130 |
Int. thread |
20 |
60 |
9.5Ø x 180 |
Click to View Danfoss AVTB technical 
Note:
When selecting a valve always choose the smallest valve which will do the job properly, oversizing may result in poor regulation as well as excessive wear of disc and seat surfaces.
Repair Kit - Consists of:-
Two diaphragms, two O-rings, one rubber cone, one tube of grease and eight cover screws.
Code numbers:
DN 15 - 003N4006
DN 20 - 003N4007
DN 25 - 003N4008
Thermostatic element only:-
Code numbers:
0-30°C sensor 18Øx210 - 003N0075
20-60°C sensor 18Øx210 - 003N0078
20-60°C sensor 9.5Øx180 - 003N0130
30-100°C sensor 9.5Øx180 - 003N0131
Brass pockets for AVTA/B
Sensor 18Øx210 - 003N0050 3/4 bsp
Sensor 9.5Øx180 - 017-436766 1/2 bsp
Stainless steel pockets for AVTA/B
Sensor 9.5Øx180 - 003N0192 3/4 bsp
Sensor 9.5Øx180 - 003N0196 1/2 bsp
Mounting Bracket for AVTA/B
All - 003N0388