Danfoss AVTA Water Valve
Danfoss AVTA Thermostatically Self-acting cooling water valve
AVTA is a self-acting, thermostatic valves for use in cooling
applications. The valve is commonly used in connection with hydraulic
stations, and is often named the "fit and forget" valve, due to its
immense reliability, proven throughout decades.
- Self-acting cooling water valves for accurate flow control
based on sensor temperature
- Capillary sensor with adsorption charge, mass charge or
universal charge
- Open on rising temperature
- Brass or stainless steel valve body
- For extremely aggressive media, also available in titanium
(please contact us)
- Click for the Danfoss AVTA Technical PDF Brochure
- For further information call Freddy - Peace Refrigeration's
Danfoss
Consultant on 03-8961 9008
Technical Data
| Media temperature : |
-25 to + 130oC |
| Differential pressure : |
0 to 10 bar |
| Max. working pressure : |
16 bar |
| Max. test pressure : |
25 bar |
| Max. pressure on sensor : |
25 bar |
| Materials : |
Standard valve body : Brass |
| |
Stainless steel or DZR bodies on request |
Opens on rising sensor temperature. The valve is pressure relieved,
i.e. the degree of opening is not effected by differential
pressure Δp (pressure drop). The regulation range is defined for
the point at which the valve begins to open.
AVTA with adsorption charge
The charge consists of active carbon and CO2 which is absorbed
on falling sensor temperature and thereby produce pressure changes
in the element.
Special Characteristics:
- Wide regulating range
- Small sensor dimensions - ø9.5 x 160mm. The sensor can be
installed in any position as far as orientation and temperature
is concerned.
| Connection |
Regulating range
(oC) |
Max. sensor
temperature |
kv Value (m3/h at
Δp = 1bar) |
Capillary tube
length |
Type |
Code No. |
Weight |
| G 1/2 |
+10 to +80oC |
+130oC |
1.9 |
2.3 |
AVTA15 |
003N0107 |
1.53 |
| G 3/4 |
+10 to +80oC |
+130oC |
3.4 |
2.3 |
AVTA20 |
003N0108 |
1.42 |
| G 1 |
+10 to +80oC |
+130oC |
5.5 |
2.3 |
AVTA25 |
003N0109 |
1.57 |
AVTA with universal charge
The charge is liquid / gas where the liquid surface (regulating
point) is always inside the sensor. Which charge medium is used depends
on the temperature range.
Special Characteristics
- Sensor Dimensions ø18 x 210mm. The sensor must be installed
horizontally or with the free end pointing downwards. The sensor can be
installed colder or warmer than the valve.
- Max pressure on sensor 25 bar
| Connection |
Regulating range
(oC) |
Max. sensor temperature |
kv Value (m3/h at
Δp = 1bar) |
Capillary tube length |
Type |
Code No. |
Weight |
| G 1/2 |
0 to +30oC |
+57oC |
1.9 |
2 |
AVTA15 |
003N2132 |
1.68 |
| G 3/4 |
0 to +30oC |
+57oC |
3.4 |
2 |
AVTA20 |
003N3132 |
1.50 |
| G 1/2 |
+25 to +65oC |
+90oC |
1.9 |
2 |
AVTA15 |
003N2162 |
1.68 |
| G 3/4 |
+25 to +65oC |
+90oC |
3.4 |
2 |
AVTA20 |
003N3162 |
1.70 |
| G1 |
+25 to +65oC |
+90oC |
5.5 |
2 |
AVTA25 |
003N4162 |
1.83 |
AVTA Accessories
Sensor pocket for ø9.5mm - Brass G 1/2 - 017-4367 |
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