AVTA Thermostatic Valves

Danfoss thermostatically operated valves are a simple and reliable control solution requiring neither electricity nor control air. An example of application is automatic control of water temperature in cooling systems.
The valves are available with remote or built-in sensor.

The AVTA needs no power, so if the electricity supply is interrupted, the cooling system won’t fail. The AVTA uses small changes in temperature to move the valve cone and proportionally change the coolant flow.

In addition, the AVTA:

• Is insensitive to dirt, increasing reliability while reducing maintenance costs,

• Is insensitive to water pressure, ensuring reliable function throughout the entire pressure range,

• Minimises the consumption of cooling water,

• Can operate from 0 bar differential pressure,

• Adjusts the temperature to the required value with a high degree of precision, and

• Is easier to install than electrical control valve solutions

AVTA is a self-acting, thermostatically operated valve 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
• Medium temp -25 to 130°C

Table Glossary

AVTA with universal charge : The charge is a mix of liquid and gas where the liquid surface (regulating point) is always inside the sensor. Which charge medium is used depends on the regulation range
• Sensor dimensions ø18 × 210 mm
• Sensor can be installed in a place where it is
• Either colder or warmer than the valve
• Max. pressure on sensor 25 bar

AVTA with mass charge : The charge is a mix of liquid and gas. Due to the mixture of liquid and gas the sensor must be installed in an area or environment that is warmer than the valve
• Small sensor dimensions – ø9.5 × 180 mm
• Short time constant
• Max. pressure on sensor 25 bar

AVTA with adsorption charge
• Wide regulating range
• Can be installed in any position as far as orientation and temperature are concerned
• Small sensor dimensions – ø9.5 × 150 mm
• Max. pressure on sensor 25 bar

AVTA Brass Thermostatically Operated Valves with Temperature Sensitive Sensor
Code No.	Type	Conn.	Cap tube (mm)	Orifice size (mm)	Kv value (m³/h)	Temp range (°C)	Charge type	Arm. Cap. tube
003N0031	AVTA 20	G 3/4	2000 mm	20,00 mm	3,40, 3,400 m³/h	25 - 65 °C	UNIVERSAL	Yes
003N0032	AVTA 25	G 1	2000 mm	25,00 mm	5,50, 5,500 m³/h	25 - 65 °C	UNIVERSAL	Yes
003N0034	AVTA 15	G 1/2	5000 mm	15,00 mm	1,90, 1,900 m³/h	25 - 65 °C	MASS	-
003N0041	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	25 - 65 °C	UNIVERSAL	Yes
003N0042	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	0 - 30 °C	MASS	-
003N0043	AVTA 20	G 3/4	2000 mm	20,00 mm	3,40, 3,400 m³/h	0 - 30 °C	MASS	-
003N0045	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	25 - 65 °C	MASS	-
003N0046	AVTA 20	G 3/4	2000 mm	20,00 mm	3,40, 3,400 m³/h	25 - 65 °C	MASS	-
003N0047	AVTA 25	G 1	2000 mm	25,00 mm	5,50, 5,500 m³/h	25 - 65 °C	MASS	-
003N0107	AVTA 15	G 1/2	2300 mm	15,00 mm	1,90, 1,900 m³/h	10 - 80 °C	ADSORPTION	-
003N0108	AVTA 20	G 3/4	2300 mm	20,00 mm	3,40, 3,400 m³/h	10 - 80 °C	ADSORPTION	-
003N0109	AVTA 25	G 1	2300 mm	25,00 mm	5,50, 5,500 m³/h	10 - 80 °C	ADSORPTION	-
003N0115	AVTA 15	G 1/2	2300 mm	15,00 mm	1,90, 1,900 m³/h	10 - 80 °C	ADSORPTION	-
003N0299	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	25 - 65 °C	MASS	Yes
003N0907	AVTA 15	G 1/2	2300 mm	15,00 mm	1,90, 1,900 m³/h	40 - 110 °C	ADSORPTION	-
003N0908	AVTA 20	G 3/4	2300 mm	20,00 mm	3,40, 3,400 m³/h	40 - 110 °C	ADSORPTION	-
003N0909	AVTA 25	G 1	2300 mm	25,00 mm	5,50, 5,500 m³/h	40 - 110 °C	ADSORPTION	-
003N1132	AVTA 10	G 3/8	2000 mm	10,00 mm	1,40, 1,400 m³/h	0 - 30 °C	UNIVERSAL	-
003N1144	AVTA 10	G 3/8	2300 mm	10,00 mm	1,40, 1,400 m³/h	10 - 80 °C	ADSORPTION	-
003N1162	AVTA 10	G 3/8	2000 mm	10,00 mm	1,40, 1,400 m³/h	25 - 65 °C	UNIVERSAL	-
003N1182	AVTA 10	G 3/8	2000 mm	10,00 mm	1,40, 1,400 m³/h	50 - 90 °C	UNIVERSAL	-
003N2107	AVTA 15	G 1/2	540 mm	15,00 mm	1,90, 1,900 m³/h	10 - 80 °C	ADSORPTION	Yes
003N2114	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m3/h	10 - 80 °C	ADSORPTION	Yes
003N2119	AVTA 15	G 1/2	540 mm	15,00 mm	1,90, 1,900 m³/h	50 - 90 °C	ADSORPTION	Yes
003N2132	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	0 - 30 °C	UNIVERSAL	-
003N2133	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m3/h	0 - 30 °C	UNIVERSAL	-
003N2162	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	25 - 65 °C	UNIVERSAL	-
003N2165	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m3/h	25 - 65 °C	MASS	-
003N2169	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m3/h	25 - 65 °C	UNIVERSAL	-
003N2175	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	25 - 65 °C	MASS	-
003N2182	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	50 - 90 °C	UNIVERSAL	-
003N2202	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	50 - 90 °C	UNIVERSAL	-
003N2212	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	50 - 90 °C	UNIVERSAL	-
003N2213	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	50 - 90 °C	UNIVERSAL	-
003N2299	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	25 - 65 °C	MASS	Yes
003N2303	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	10 - 80 °C	ADSORPTION	Yes
003N2305	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m³/h	10 - 80 °C	ADSORPTION	Yes
003N3132	AVTA 20	G 3/4	2000 mm	20,00 mm	3,40, 3,400 m³/h	0 - 30 °C	UNIVERSAL	-
003N3162	AVTA 20	G 3/4	2000 mm	20,00 mm	3,40, 3,400 m³/h	25 - 65 °C	UNIVERSAL	-
003N3165	AVTA 20	G 3/4	5000 mm	20,00 mm	3,40, 3,400 m³/h	25 - 65 °C	UNIVERSAL	-
003N3171	AVTA 20	G 3/4	2300 mm	20,00 mm	3,40, 3,400 m³/h	10 - 110 °C	ADSORPTION	-
003N3182	AVTA 20	G 3/4	2000 mm	20,00 mm	3,40, 3,400 m³/h	50 - 90 °C	UNIVERSAL	-
003N3184	AVTA 20	G 3/4	4000 mm	20,00 mm	3,40, 3,400 m³/h	50 - 90 °C	UNIVERSAL	-
003N3190	AVTA 20	G 3/4	2000 mm	20,00 mm	3,40, 3,400 m³/h	50 - 90 °C	UNIVERSAL	-
003N4132	AVTA 25	G 1	2000 mm	25,00 mm	5,50, 5,500 m³/h	0 - 30 °C	UNIVERSAL	-
003N4162	AVTA 25	G 1	2000 mm	25,00 mm	5,50, 5,500 m³/h	25 - 65 °C	UNIVERSAL	-
003N4165	AVTA 25	G 1	5000 mm	25,00 mm	5,50, 5,500 m³/h	25 - 65 °C	UNIVERSAL	-
003N4182	AVTA 25	G 1	2000 mm	25,00 mm	5,50, 5,500 m³/h	50 - 90 °C	UNIVERSAL	-
003N4183	AVTA 25	G 1	3000 mm	25,00 mm	5,50, 5,500 m³/h	50 - 90 °C	UNIVERSAL	-
003N6115	AVTA 15	NPT 1/2-14	2300 mm	15,00 mm	1,90, 1,900 m³/h	10 - 80 °C	ADSORPTION	-
003N6132	AVTA 15	NPT 1/2-14	2000 mm	15,00 mm	1,90, 1,900 m³/h	0 - 30 °C	UNIVERSAL	-
003N6162	AVTA 15	NPT 1/2-14	2000 mm	15,00 mm	1,90, 1,900 m³/h	25 - 65 °C	UNIVERSAL	-
003N6182	AVTA 15	NPT 1/2-14	2000 mm	15,00 mm	1,90, 1,900 m³/h	50 - 90 °C	UNIVERSAL	-
003N7120	AVTA 20	NPT 3/4-14	2300 mm	20,00 mm	3,40, 3,400 m³/h	10 - 80 °C	ADSORPTION	-
003N7162	AVTA 20	NPT 3/4-14	2000 mm	20,00 mm	3,40, 3,400 m³/h	25 - 65 °C	UNIVERSAL	-
003N7182	AVTA 20	NPT 3/4-14	2000 mm	20,00 mm	3,40, 3,400 m³/h	50 - 90 °C	UNIVERSAL	-
003N8125	AVTA 25	NPT 1	2300 mm	25,00 mm	5,50, 5,500 m³/h	10 - 80 °C	ADSORPTION	-
003N8132	AVTA 25	NPT 1	2000 mm	25,00 mm	5,50, 5,500 m³/h	0 - 30 °C	UNIVERSAL	-
003N8162	AVTA 25	NPT 1	2000 mm	25,00 mm	5,50, 5,500 m³/h	25 - 65 °C	UNIVERSAL	-
003N8182	AVTA 25	NPT 1	2000 mm	25,00 mm	5,50, 5,500 m³/h	50 - 90 °C	UNIVERSAL	-

AVTA Stainless Steel Thermostatically Operated Valves for aggressive media
Code No.	Type	Conn.	Cap tube (mm)	Orifice size (mm)	Kv value (m³/h)	Temp range (°C)	Charge type	Arm. Cap. tube
003N1710	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m3/h	25 - 65 °C	MASS	-
003N2150	AVTA 15	G 1/2	2300 mm	15,00 mm	1,90, 1,900 m3/h	10 - 80 °C	ADSORPTION	-
003N2151	AVTA 15	G 1/2	2000 mm	15,00 mm	1,90, 1,900 m3/h	0 - 30 °C	UNIVERSAL	Yes
003N2152	AVTA 15	G 1/2	2300 mm	15,00 mm	1,90, 1,900 m3/h	10 - 80 °C	ADSORPTION	-
003N3150	AVTA 20	G 3/4	2300 mm	20,00 mm	3,40, 3,400 m3/h	10 - 80 °C	ADSORPTION	-
003N4150	AVTA 25	G 1	2300 mm	25,00 mm	5,50, 5,500 m3/h	10 - 80 °C	ADSORPTION	-
003N4152	AVTA 25	G 1	2000 mm	25,00 mm	5,50, 5,500 m3/h	0 - 30 °C	UNIVERSAL	-

AVTA Spare Parts and Accessories

AVTA Spare Parts and Accessories
Code No.	Type/Description	Temp range (°C)	Sensor (dia x L) (mm)	Arm. Cap. tube	Conn standard	Conn size (in)	Cap Length (mm)
003N0012	Adjusting handle	-	-	-	-	-	-
003N0050	Sensor pocket	-	18 x 210 mm	-	ISO 228-1	G External	-
003N0051	Sensor pocket	-	18 x 210 mm	-	ANSI/ASME B1.20.1	NPT External	-
003N0053	Sensor pocket	-	18 x 210 mm	-	ANSI/ASME B1.20.1	NPT External	-
003N0056	Capillary tube gland	-	18 x 210 mm	-	-	-	-
003N0062	Thermostatic element	50-90°C	18 x 210 mm	-	-	-	2000 mm
003N0063	Thermostatic element	25-65°C, 20-60°C	18 x 210 mm	Yes	-	-	2000 mm
003N0066	Thermostatic element	0-30°C	9,5 x 180 mm	-	-	-	2000 mm
003N0068	Thermostatic element	25-65°C, 20-60°C	9,5 x 180 mm	-	-	-	5000 mm
003N0075	Thermostatic element	0-30°C	18 x 210 mm	-	-	-	2000 mm
003N0077	Thermostatic element	0-30°C	18 x 210 mm	-	-	-	5000 mm
003N0078	Thermostatic element	25-65°C, 20-60°C	18 x 210 mm	-	-	-	2000 mm
003N0079	Thermostatic element	25-65°C, 20-60°C	18 x 210 mm	-	-	-	3000 mm
003N0089	Thermostatic element	50-90°C	18 x 210 mm	-	-	-	3000 mm
003N0091	Thermostatic element	25-65°C, 20-60°C	9.5 x 180 mm	-	-	-	2000 mm
003N0155	Capillary tube gland	-	18 x 210 mm	-	-	-	-
003N0192	Sensor pocket	-	18 x 210 mm	-	ISO 7-1	R External	-
003N0196	Sensor pocket	-	9,5 x 150 mm , 9,5 x 180 mm	-	ISO 7-1	R External	-
003N0278	Thermostatic element	10-80°C	9,5 x 150 mm	-	-	-	2300 mm
003N0388	Bracket	-	-	-	-	-	-
003N0520	Plastic hand knob	-	-	-	-	-	-
003N4006	Repair kit	-	-	-	-	-	-