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.
Danfoss AVTB 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
- Circulation water / glycolic water up to 30%: -25 … +130 °C
- Int. thread
- Ext. thread (weld-on and ext. thread tailpieces)
• Flow or return mounting, depending on sensor type.
Complete controller including sensor stuffing box. The immersion pocket is an accessory.
Small sensor Ø 9.5 × 180. The sensor is to be mounted where the system temperature is warmer than the temperature in the valve housing. Insulaton disk is factory mounted on the controller.
Capillary tube length: 2 m. Including sensor Ø 18 × 210;
Small sensor Ø 9.5 × 150. Capillary tube length 2.3 m.
Pockets available on request