Data Sheet Regulate and monitor ammonia and fluorinated refrigerants in industrial refrigeration systems Thermostatic expansion valves regulate the injection of refrigerant liquid into evaporators. Injection is controlled by the refrigerant superheat. Therefore the valves are especially suitable for liquid injection in ,,dry" evaporators where the superheat at the evaporator outlet follows the evaporator load proportionally. • Large temperature range: -50 °C - +30 °C Can be used in both freezing and refrigeration systems • Interchangeable orifice assemblies • Interchangeable thermostatic element • Rated capacities from 3.5 - 295 kW, 1 - 85 tons (TR) • External superheat setting Can be matched to all evaporators to give optimum evaporator utilization • Patented double contact bulb Fast and easy to install. Good temperature transfer from tube to bulb • Classification: DNV, CRN, BV, EAC etc. To get an updated list of certification on the products please contact your local Danfoss Sales Company

Thermostatic expansion valves for ammonia, Type TEA Functions TEA is equipped with interchangeable orifice assembly and thermostatic element. TEA is built up of three interchangeable main components: • Thermostatic element (1) • Orifice assembly (2) • Valve body (3), with flange connections The valve has external equalization. A separate outlet orifice assembly (10) is for use with TEA 20-1 (3.5 kW) only. The double contact bulb gives fast and precise reaction to temperature changes in the evaporator suction line, even with much reduced evaporator load. It also makes fitting the bulb quick and...

Thermostatic expansion valves for ammonia, Type TEA Media Refrigerants Refrigerant R717 - NH3(Ammonia) New refrigerants Danfoss products are continually evaluated for use with new refrigerants depending on market requirements. When a refrigerant is approved for use by Danfoss, it is added to the relevant portfolio, and the R number of the refrigerant (e.g. R513A) will be added to the technical data of the code number. Therefore, products for specific refrigerants are best checked at store.danfoss.com/en/, or by contacting your local Danfoss representative. © Danfoss | Climate Solutions | 2023.02...

Thermostatic expansion valves for ammonia, Type TEA Product specification Pressure and temperature Table 1: Pressure and temperature Evaporating temperature range Capillary tube length: Connection for external pressure equalization 1⁄4 in. or ∅ 6.5 / ∅ 10 mm weld nipple. An 8 mm self-cutting union can also be used. Design Materials Valve housing made of GGG40.3 Gaskets are non asbestos Identification Figure 1: Element label Element label The thermostatic element Has a white label attached to its top. The colour refers to the refrigerant for which the valve is designed: R 717 (Ammonia). The orifice...

Thermostatic expansion valves for ammonia. Type TEA 1 Thermostatic element (diaphragm) 4 Superheat setting spindle (see Jnstructions") 5 Ext. pressure equalizing connection 10 Separate outlet orifice (for TEA 20-1 only) © Danfoss I Climate Solutions I 2023.02 Al 172886422449en-000501 I 5

Thermostatic expansion valves for ammonia, Type TEA © Danfoss | Climate Solutions | 2023.02 AI172886422449en-000501 | 6

Thermostatic expansion valves for ammonia, Type TEA Type and rated Pressure drop across valve Ap bar Pressure drop across valve Ap bar Subcooling At = 4K ahead of the valve. Type and rated capacity in tons (TR) Pressure drop across valve Ap bar Pressure drop across valve Ap bar Evaporating temperature +10 °C Evaporating temperature 0 °C © Danfoss | Climate Solutions | 2023.02 AI172886422449en-000501 | 7

Thermostatic expansion valves for ammonia, Type TEA Type and rated Pressure drop across valve Ap bar Pressure drop across valve Ap bar Subcooling At = 4K ahead of the valve. Table 6: Temperature and cooling data Evaporator capacity Qe Evaporating temperature te Condensing temperature tc Subcooling At If the pressure drop Ap1 across pipelines, etc. is calculated, for example, as 0.5 bar, the effective pressure drop across the thermostatic valve becomes Now, from the capacity table at an evaporating temperature te = -20 °C and Ap = 10 bar, the capacity is 267 kW. The column on the far left of this...

Thermostatic expansion valves for ammonia, Type TEA Table 7: Valid approvals Machinery & Equipment EAC Declaration Explosive - Safety Certificate Manufacturers Declaration Pressure - Safety Certificate Pressure - Safety Certificate Pressure - Safety Certificate © Danfoss | Climate Solutions | 2023.02 AI172886422449en-000501 | 9

Online support Danfoss offers a wide range of support along with our products, including digital product information, software, mobile apps, and expert guidance. See the possibilities below. The Danfoss Product Store is your one-stop shop for everything product related—no matter where you are in the world or what area of the cooling industry you work in. Get quick access to essential information like product specs, code numbers, technical documentation, certifications, accessories, and more. Start browsing at store.danfoss.com. Find technical documentation Find the technical documentation you...