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Electrical control valves series EX4-8 Features and benefits • Multifunction as expansion valve, hot gas bypass, suction gas throttling, head pressure, liquid level actuator etc. • Fully hermetic design (no thread joints between valve body and motor compartment) • Applicable to all common refrigerants (HCFC, HFC) and for subcritical CO2 applications • Stepper motor driven • Short opening and closing time • High resolution and excellent repeatability • Positive shut-off function to eliminate the need for additional solenoid valve • Bi-flow versions for heat pump applications • High linear flow capacity • Extremely wide capacity range (10 ... 100%) • Continuous modulation of mass flow, no stress (liquid hammering) in the refrigeration circuit • Direct coupling of motor and valve for high reliability EX4 EX6 EX5 EX7 (no gear mechanism) • Ceramic slide and port for highly accurate flow and minimal wear • Balanced force design • Corrosion resistant stainless steel body and stainless steel connections • PS: EX4 (uni-flow) 90bar, EX4 (bi-flow) 60bar, EX5-7 60bar, EX8 56bar • Liquid Inlet Temperature TS: Uniflow: -50...+100°C, Biflow: -40...+80°C Selection table EX8 Type Part no. Flow pattern Nominal capacity range (kW) Inlet connection Outlet connection Electrical connection EX4-I21 800615 Uni-flow 27 3/8” ODF 5/8” ODF M12 Plug EX4-M21 800616 10 mm ODF 16 mm ODF EX5-U21 800618 82 5/8” (16 mm) ODF 7/8” (22 mm) ODF EX6-I21 800620 197 7/8” ODF 1-1/8” ODF EX6-M21 800621 22 mm ODF 28 mm ODF EX7-I21 800624 541 1-1/8” ODF 1-3/8” ODF EX7-M21 800625 28 mm ODF 35 mm ODF EX8-M21 800629 1442 42 mm ODF 42 mm ODF EX8-U21 800630 1-3/8” (35 mm) ODF 1-3/8” (35 mm) ODF EX8-I21 800631 1-5/8” ODF 1-5/8” ODF EX4-U31 800617 Bi-flow (Heat pump) 27 5/8” (16 mm) ODF 5/8” (16 mm) ODF EX5-U31 800619 82 7/8” (22 mm) ODF 7/8” (22 mm) ODF EX6-I31 800622 197 1-1/8” ODF 1-1/8” ODF EX6-M31 800623 28 mm ODF 28 mm ODF EX7-U31 800626 541 1-3/8” (35 mm) ODF 1-3/8” (35 mm) ODF Note1: EX4-8 are delivered without cable/connector assembly -to be ordered separately. Note2: Nominal capacity at -10°C evaporating temperature, +10°C liquid temperature and 0K subcooling. Note3: For selection of other operating condition, please use quick selection tables in the next pages or Navigator selection program 2019. Cable connector assemblies Type Part no. Temperature range Length Connector type to valve Connector type to driver board or controller Picture EXV-M15 804 663 1.5 m EXV-M30 804 664 3.0 m EXV-M60 804 665 -50 ... +80°C 6.0 m M12, 4 pins Loose wires 25PDF Image | CO2 Product Guide 2021
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
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