They do this in response to signals sent to them by an electronic controller. All valves currently offer 2500 steps of stroke, except for the two. The tseries takeapart valves, with adjustable superheat and replaceable, interchangeable components are ideal for original equipment and field replacements in air. The exdu00 is a universal driver that enables the operation of emerson stepper motor driven valves used in applications such as solenoid valves, electronic expansion valves, hot gas bypass or evaporator pressure regulator as capacity control, crankcase pressure regulator, heat reclaim regulator, and liquid level control. Contact us 5580 enterprise parkway, fort myers, florida usa 33905 phone. A wide variety of electronic expansion valve options are available to you, such as refrigeration parts. The emerson nxt series is a balanced ported valve designed for high efficiency r410a air conditioning and heat pump applications. Sporlan selection program for hvacr applications is new virtual. Reliable and stable performance for controlling superheat. The leading selection software for making quick selections of compressors or refrigeration units that best match your needs.
Flow controls asia cross reference and production information. Piping systems dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams. Valueadded features include rotary screw compression, r4a hfc refrigerant, a quiet aeroacoustic fan system, easy to. This site is devoted to providing our customers the most up to date information about the valve sizing and selection software programs for emerson automation solutions including our latest version of relief valve sizing software, prv 2 size. Find the right valves, controls and system protectors for your air conditioning or refrigeration applications. They are much more sophisticated and allow the refrigeration system to operate much more accurately and efficiently.
Only energized during stepping moving valve member position. From the 1947 launch of the catchall, the worlds first molded core filterdrier, to todays intricate electronic valve and controller packages, for over 80 years sporlan has set the industry standard for the development and manufacture of leading edge hvacr components. Coolselector2 helps you optimize energy consumption and increase efficiency in any hvacr system. Danfoss the pioneer in electric expansion valve control. Mar 25, 20 carel electronic expansion valves are designed to meet any cooling capacity requirements up to 2000 kw in airconditioning and refrigeration applications, and stand out above all for their. Thermostatic expansion valves electrical control valves. Pressure controls can be used in refrigeration and airconditioning systems to. Thermostatic expansion valve cross reference interchangeable orifice nominal capacity tons connection alco sporlan parker virginia singer danfoss totaline replacement type orifice pn pn body orifice conn. We manufacturing the worlds most reliable reversing valves. Electronic expansion valves stators cables accessories. Carel electronic expansion valves are designed to meet any cooling capacity requirements up to 2000 kw in airconditioning and refrigeration applications, and stand out above all for their excellent flow control, even at lower flowrates.
Angelo aquilina refrigeration supplies ltd always research and develop and implement leading processes and technologies, so we offer latest equipment latest technology latest electronic expansion valves resulting. However, the cost of electronic valves, which includes the sensors, regulator, actuator and the valve itself, is still much higher than for the simple and mechanical thermal expansion valve. User friendly software tools for real time alerts, information and service with emersons climate. Welcome to the emerson automation solutions sizing website. Danfoos electronic expansion valve ets 400 and ets 50 to decrease sudden pressure and temperature duration.
Pressure equalizing flare hc14fw rcd12fw nif14 ff14 gf14 df14 ra14fa. The rsv is engineered for use with common hcfc and hfc refrigerants. General characteristics electronic expansion valves summary of selection guide. The valve has been designed for precise liquid injection into evaporators for air conditioning and refrigeration applications. Using an rsv electric expansion valve in place of a traditional mechanical expansion valve ensures the system is at the desired superheat over a much wider range of operating conditions. Ts series electronic expansion valves are designed for usage in air conditioning and refrigeration systems or in heat pumps.
The exdu00 is a universal driver that enables the operation of emerson stepper motor driven valves used in applications such as solenoid valves, electronic expansion valves, hot gas bypass or evaporator pressure regulator as capacity control, crankcase pressure regulator, heat. Since electric valves are assigned their function in the system by the software in the controller, an electric valve can be used anywhere in the system. Moreover, these also have statistical advantages again of several percent as the electronic system guarantees optimum calibration at all times, unlike mechanical devices that needs to be adjusted manually and periodically. The table below can be used as a valve selection guide. The following procedure should be used when selec rating of the. Using an electronic expansion valve eev allows the supermarket to operate with lower head pressures lazzarin et al. E2v18bwa00 electronic expansion valve e2v18b 3838 iacs. This means that in most cases you can manage without a crankcase pressure regulator, which amounts to a significant cost saving with a relatively large. Jul 28, 2004 the electronic expansion valve eev operates with a much more sophisticated design.
Introduction evd4 is an evolved pid controller complete with driver for stepper motors specially designed for the ma nagement of electronic expansion valves in refrigerant circuits. Considering the necessary general nature of the data and how the practical development and use of the plant affects the cooling systems efficiency, carel provides no guarantee nor accepts. Moreover, these also have statistical advantages again of several percent as the electronic system guarantees optimum calibration at all times, unlike mechanical devices. How electronic expansion valves work the engineering mindset. Run unbiased calculations based on a set of operating conditions such as cooling capacity, refrigerant, evaporation, and condensation temperature and then select the best components for your design. Electronic expansion valve eev kits for dvm s systems. The unit also delivers industryleading dehumidification capability, down to 50 percent.
Eevs control the flow of refrigerant entering a direct expansion evaporator. Types of expansion devices expansion devices can be divided into four general categories. The actual selection of sei valves should be based on information generally requi if possible, the valve capacity should equal or slightly exceed the design red for any expansion valve. To date, more than 200,000,000 electric expansion valves have demonstrated proven reliability around the globe. The ex4ex8 are stepper motor driven valves that are optimized for the control of liquid or gaseous mass flow in refrigeration systems multifunction capability as expansion valve, hot gas bypass, suction gas throttling, head pressure, liquid line actuator and other applications systems. The ex4ex8 are stepper motor driven valves that are optimized for the control of liquid or gaseous mass flow in refrigeration systems multifunction capability as expansion valve, hot gas bypass, suction gas throttling, head pressure, liquid line actuator and other applications systems the aseries is used for heat pump, air conditioning. Quick response expansion valve qrev selection tool. It features sophisticated control functions and can be used in many operating con. Electronic expansion valves have been increasing in popularity, and the technology has evolved to cope with increasingly sophisticated demands. Control valves control valve terminology, bodies, trim, flow characteristics, cv and kv sizing, noise, actuators and positioners. Selection table for electrical control valves and applicable controllers.
Valve sizing and selection software emerson automation. Let me explain what an expansion valve does and why an electronic type makes for a better chamber. The resolution of an electric expansion valve eev is governed by the stroke and number of steps in that stroke. An akv is based on pulse width modulating pwm principle a combined solenoid valve and expansion valve in one device. Thermal expansion valve vs electronic expansion valve. Always remember that selection software is only as good as the person using it. Electronic expansion valves are an evolution on the thermal expansion valve. Electronic expansion valves replace mechanical expansion devices, improving control of refrigerant flow and consequently increasing unit efficiency by up to several percent. Selection procedure evaporating temperature and the available pressure drop across the valve. Since electric valves are assigned their function in the system by the software in their controller, an electric valve can be used anywhere in the system. A small motor is used to open and close the valve port.
Expansion valve cross reference thermostatic expansion valve cross reference interchangeable orifice nominal capacity tons connection alco sporlan parker virginia singer danfoss totaline replacement type orifice pn pn body orifice conn. Welcome to parker sporlans virtual engineer sizing and selection tool parker sporlans virtual engineer is an innovative design tool for climate control and refrigeration applications. Danfoss learning electrically operated expansion valves. The valve supports automatic adjustment of refrigerant flow rate and makes the system work under optimized conditions for the purpose of fast cooling or heating, precise temperature. Heating ventilation and air conditioning 10,916 views 2. Ke2 therm solutions, inc 12 chamber drive, washington, mo 63090 636. Colibri electric expansion valves type ets 12c, ets 24c, ets 25c, ets 50c, ets 100c dkrcc. Eevs have small stepper motors that open and close their valve port. Exvlab, the fruit of carels thirtysome years of experience, allows the user to size and select the valve that most fits the given operating conditions.
Compact design, easy to install versatile refrigerant control. Carel electronic expansion valves are designed to meet any cooling capacity requirements up to 2000 kw in airconditioning and refrigeration applications, and. The app calculates based on input data and suggest you the right product showing also refrigeration diagram and cycle data besides technical data of the. Valve will remain in place without power, resulting in energy savings. Aug 27, 2014 danfoos electronic expansion valve ets 400 and ets 50 to decrease sudden pressure and temperature duration. Alibaba manufacturer directory suppliers, manufacturers.
The current range is available with different capacities, and can be used with all common refrigerants. Features precise control using stepper motor with 500 step resolution 250 for lfm. Sporlan offers nine standard electric expansion valves to cover the full nominal capacity range from 2. The electronic expansion valve eev operates with a much more sophisticated design. An expansion valve is used in a refrigeration circuit to change the coolant from a compressed liquid to an expanded gas. The electronic expansion valve driver allows the user to select from different. Starting from the data relevant to the working temperature and coolingheating capacity, the application calculates the valve size suitable for the manufacturer needs. Pressure equalizing flare hc14fw rcd12fw nif14 ff14 gf14 df14 ra14fa 223fa14 228fa14 tf 2 01. System 450 modular digital electronic controls flash drive firmware. Electronic expansion valves eev balanced ets valve danfoss. The mop is freely selectable with an electronic expansion valve, and.
The sporlan selection program is newly launched as virtual engineer. Ets 6 is a compact and lightweight electric expansion valve. Since electric valves are assigned their functions by the software in their controllers, an electric valve can be used anywhere in a systemas an expansion valve, discharge gas bypass valve, evaporator control valve, heat reclaim valve, head pressure. Expansion valves resource center espec north america. Designed for refrigeration and air conditioning applications. Select 8 asia selection tool for refrigeration, heating, rail transport products. Since electric valves are assigned their functions by the software in their controllers, an electric valve can be used anywhere in a systemas an expansion valve, discharge gas bypass valve, evaporator control valve, heat reclaim valve, head pressure control valve, or crankcase pressure control valve. Nowadays the majority of customers pays particular attention to energy costs. Valve standards international standards for valves in. Exv selection is the application, developed by carel, to quickly and easily select the correct size of the electronic expansion valve, either for ac or retail applications. Electronic expansion valves summary of selection guide.
The suitability of a valve for a particular application is decided by the materials used in relation to the conveyed fluid as well as its mechanical design. Aquaforce 30xa chillers were designed from the ground up to meet the efficiency demands of today and the future by providing premium aircooled chiller packages for contractors, consulting engineers and building owners. Youll usually see electronic expansion valves listed with the acronym of either eev or exv. Especs reachin and walkin chambers feature electronic expansion valves eevsthe first and only chambers in north america to do so. The valve supports automatic adjustment of refrigerant flow rate and makes the system work under optimized conditions for the purpose of fast.
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