Detailed product knowledge about Danfoss expansion valves The thermal expansion valve is used to adjust the supply amount of liquid refrigerant in the evaporator. The supply amount is controlled by the superheat of the refrigerant. Therefore, this valve is particularly suitable for the supply of refrigerant liquid in the dry evaporator. Because the refrigerant superheat at the outlet of the dry evaporator is proportional to the load of the evaporator. Features: Large evaporation temperature range, interchangeable flow port components-easier to stock,-easy to match capacity,-easy to maintain, the nominal cooling capacity is 0.5`15.5kw when the working medium is R22. Valves with MOP function can be provided to prevent damage to the machine motor due to excessively high evaporation force. Patented dual-contact temperature-sensing package-quick and convenient installation-good heat transfer effect between the pipeline and the temperature-sensing package. Valves with special temperature range can be provided. Technical parameters: After the valve is installed, the temperature of the temperature package is: 100℃. When the temperature package is not installed, the temperature of the package is: 60℃. Maximum test pressure: 36bar Permissible working pressure: 28bar Static superheat SS can be adjusted by adjusting lever. For valves without MOP function, SS=5k: For valves with MOP function, SS=4k Open superheat OS= 6K is the superheat of the valve from opening to reaching the opening of the cooling capacity defined in the performance table. Usually T2, and TE2 are replaceable, orifice components. TE5-TE55 thermal expansion valve is used to adjust the supply of liquid refrigerant in the evaporator. The supply amount is controlled by the superheat of the refrigerant. This valve is therefore particularly suitable for the supply of refrigerant liquid in dry evaporators. Because the refrigerant superheat at the outlet of the dry evaporator is proportional to the load of the evaporator. Features, wide evaporation temperature range, -60℃~+10℃ is suitable for freezing, refrigeration and air conditioning devices. Interchangeable spout components are easier to stock, easier to match capacity, and easier to maintain. Stainless steel actuator, capillary tube and temperature sensor-high corrosion resistance; high strength and shock resistance,-easy installation: self-correcting temperature sensor,-good heat transfer effect. Valves with MOP function can be provided to prevent damage to the compressor motor due to excessively high evaporation pressure. Patented dual-contact temperature sensor; quick and convenient installation -; good heat transfer effect between pipeline and temperature sensor. Technical data: *High temperature; The temperature of the valve after installing the temperature sensor: 100℃; The temperature of the valve without the temperature sensor: 60℃ *High test pressure: 28bar Allowable working pressure: 2bar *Low temperature; -60℃ Heat: The static superheat SS can be adjusted using the adjustment lever. For valves without MOP function, SS=5k: For valves with MOP function, SS=4K. Opening superheat degree OS=6K; It is the superheating degree when the cooling capacity is defined in the valve opening capacity table. Design function: Usually TE5 and TE55 are composed of interchangeable thermal element 1, orifice assembly 2 and valve body 3. For the same valve type and refrigerant, the matching flow port assembly can be applied to various types of valve body and evaporation temperature, the amount of charge of the temperature sensing element, based on the range of evaporation temperature, TE5 and TE55 have external balance flow ports At this time, it can only be used in systems with dispensers. The valve can also withstand the effects of hot gas defrost. In order to extend the service life, all the valve core and valve seat are made of a special anti-wear alloy. TRE10, TRE20, TRE40, TE802 TRE type thermal expansion valve can be welded for air conditioning and refrigeration systems. Its high-sealing design section meets various environmental requirements. The valve can be used in systems with a cooling capacity of 28 to 245 kilowatts (8 to 70 cold tons R22). The TRE valve includes a heat-treated copper valve body and an actuator. The bimetallic brazed joints staggered up and down at both ends are made of stainless steel and brass pressed together. The two directions of the TRE valve The balanced orifice design can be conveniently used for bidirectional flow.
All TRE-type thermal expansion valves have external superheat adjustment function. For OEM-type valves that are impossible to adjust, setting components can be provided, and the filter installed at the inlet connection can be provided as an accessory.
TRE thermal expansion valve can be used for R22, R410A, R134A, and R407C and other working fluids.
Features: 1 Bimetallic connector
2; Can be used for R410A
3; Laser components for laser welding,
4; Stainless steel actuator, capillary tube and thermocouple,
5 Two-way balanced orifice design,
6; Stainless steel double-contact temperature sensor,
7 There are two types of external superheat adjustable/unadjustable.
Technical parameters: N series: -40℃~+10℃, without MOP. K series: -25~+10℃, with MOP.
Static superheat, adjustable/non-adjustable: 2k~6k. Discharge capacity: %15.
Maximum working temperature: -Thermal components N series: 100℃ (R410A: 70℃) K series: 150℃ Valve body: 110℃ Maximum operating pressure: PB=42bar; *Maximum test pressure: P=46.5bar Bidirectional flow application performance.
Changing the static superheat SS (through lever adjustment) can change the total superheat.
Note: If the superheat is too low, it can cause flash evaporation.
Electronic expansion valve ETS
ETS series electronic expansion valves are used in air conditioners and in this cold, to accurately control the liquid refrigerant injected into the evaporator. The valve piston and linear positioning design can achieve full balance, not only can provide two-way flow balance, but also has a two-way closing function like a solenoid valve. ETS series electronic expansion valves require click-driven operation, such as EKC312 and EVD200/300 can be used to drive ETS.
ETS design has applied for a patent.
Features: Precise positioning ensures optimal control of refrigerant injection volume. ETS50 and ETS100 are designed for HFC/HCFC working fluid, including R410A, and the working pressure is up to 45.5bar. ETS250 and ETS400 are designed for HFC/HCFC working fluid and can provide a pressure of 34 bar. The balanced orifice design not only provides two-way flow operation, when the MOPD is 33bar, it has the same two-way closing function as the solenoid valve; ETS50 and ETS100 use a bimetallic welding interface, and no wet cloth is needed for welding, which is convenient and fast. ETS250 and ETS400 are equipped with built-in sight glasses: cable connectors can be selected as required:
Provide AST-g transmission mechanism for manual operation and maintenance of ETS electronic expansion valve. For more information, please contact Danfoss.
Valve operation: ETS valve is driven and operated by AST stepper motor electronic control. The motor is a hatchback bipolar type. Only when the drive generates an electric pulse to start the two sets of separate motor stator windings to rotate in different directions, the motor will act.
The direction of motor rotation depends on the phase sequence relationship of the electrical pulses, and the number of phases plays a decisive role in operation.
The motor pushes the connecting rod, which converts the motor's rotational motion into linear motion. AST motor protection cover has standard configuration of glass sealed 2M long cable connection, and can also customize cables and plug connectors of different lengths according to user requirements.
The valve cone adopts a V-shaped port with an independent index setting, which can provide zero resistance when the refrigerant passes through the maximum cooling capacity, and can also achieve the best performance characteristics under partial load conditions. The valve cavity and valve hole adopt a completely balanced design. It can provide completely consistent bidirectional flow cooling energy and approximately the same maximum cooling capacity.
The hair port is designed to have a two-way flow closing function equivalent to a solenoid valve seal. The closed position is also the mechanical stop point. The change point is the reference point for initializing the controller. After initializing the controller with continuous excess drive steps, it is ensured that the reference step number is always correct when the valve is closed. ETS series electronic expansion valve needs to be driven by a controller. The controller can be driven by 12V DC voltage or 100maRMS clipping current.
Thermal expansion valves TUB/TUBE and TUC/TUCE
TU series thermal expansion valves are used in fully enclosed systems. The TU valve is made of stainless steel and is especially suitable for the food industry.
The TU valve can be used in various refrigeration systems, especially:-traditional refrigeration systems,-heat pump systems,-air conditioning units,-refrigeration equipment-liquid coolers,-ice machines,-automotive refrigeration systems.
All valves are available in single packaging and industrial packaging.
The superheat degree of TUB/TUBE is adjustable, and the standard model is an angle valve. The superheat of TUC/TUCE is not adjustable, same as other TUB. Both TUB/TUBE and TUC/TUCE can provide straight-through valves. All straight-through valves and TUC valves are only produced when required. Features: 1 bimetallic connection, 2 refrigerants R22, R134A, R404A, R507, R407C, R410A, 3 nominal refrigerant capacity when the working medium is R22 is 0.6-16 kW (0.17-4.5 cold tons)
4. Stable adjustment,
5. Two-way streaming application,
6. Compact structure, small size and light weight.
7. Stainless steel material, strong sealing, brazed connection,-high connection strength; high corrosion resistance; high capillary strength, anti-vibration.
8. Laser welding, stainless steel temperature-sensitive diaphragm-best adjustment ability-long diaphragm life; high compressive strength.
9. The stainless steel double-contact temperature-sensing package is easy and quick to install-the package has good heat transfer performance.
10. TUB/TUBE superheat is adjustable, TUC/TUCE superheat is not adjustable,
11. High ability to filter dirt,
12. Self-cleaning function with MOP function. Standard model: N series -40℃~+10℃ without MOP. Static superheat SS: R22, R134A, R404A, R407C, R410A=5K; R507=6.4K. Capillary length; 0.8M connection; spool; inlet 0-6 or 7-9, 6mm; 10mm; outlet: 12mm
Technical parameters; Maximum temperature package temperature: 100℃ Maximum valve body temperature 120℃; Instant maximum 150℃. Allowable working pressure (excluding R410A): PB=34bar; maximum working pressure R410A: PB=42.5bar
Maximum test pressure (excluding R410A) P=34bar; maximum test pressure R410A P=47bar
Bidirectional flow function When the fluid flows in the reverse direction, the nominal cooling capacity will be reduced by at least 15%. TUBE with port number 9, TUB and all valves with MOP function cannot be used for bidirectional flow operation. Danfoss Danfoss expansion valve is divided into thermal expansion valve T2 and TE2 thermal expansion valve TUB/TUBE and TUC/TUCE thermal expansion valve TE5-TE55 thermal expansion valve TRE10, TRE20, TRE40, TRE80 thermal expansion valve PHT electronic expansion valve ETS RD refrigerant points Liquid Solenoid Valve EVR2-40-NC/NO Solenoid Coil Solenoid Valve EVU2,3,4,5,6 Pressure Controller KP Temperature Controller KP Pressure Controller RT Temperature Controller RT Pressure Controller MP Plug-in Pressure Controller ACB series evaporating pressure regulator KVP condensing pressure regulator KVR+NRD condensing pressure regulator (water valve) WVFM, WVFX and WVS temperature control water valve AVTA energy regulator (hot gas bypass) TUH/TCHE/TRHE energy regulator ( Hot gas bypass) KVC Energy Regulator CPCE+LG Crankcase Pressure Regulator KVL Liquid Collector Pressure Regulator KVD Pressure/Temperature Control Main Valve PM5-PM125 PM Pilot Valve Series Liquid Line Dry Filter DCL and DML Interchangeable Solid Filter Element Dry filter DCR; burnt out; dry filter DAS night vision goggles SGI, SGN, SGR and SGRN check valves NRV and NRVH globe valve BM ball valve GBC pressure sensor AKS32, AKS33 pressure sensor AKS3000 for air conditioning or refrigeration system oil separation OUB Heat Exchanger HE
