EX6 Electrical Control Valve

Description

Emerson has developed a stepper motor driven valve for precise control of refrigerant mass flow in air conditioning, refrigeration, heat pumps, close control, and industrial process cooling applications. It is suitable for subcritical CO₂ applications.


Basic Specifications

• Applications: thermo-expansion duty with superheat control, liquid injection duty, hot gas bypass, evaporator pressure regulator, crankcase pressure regulator, head pressure regulator, or liquid level control
• Multifunction as expansion valves, hot gas bypass, suction gas throttling, head pressure, liquid level actuator etc.
• Fully hermetic design (no thread joints between valve body and motor compartment)
• Stepper motor driven
• Maximum working pressure: 45 bar
• Burst pressure: 225 bar
• Nominal capacity range: 24 – 244kW

Advantages

• Short opening and closing time
• Very fast full stroke time
• High resolution and excellent repeatability
• Bi-flow versions for heat pump applications
• Positive shut-off function to eliminate the use of an additional solenoid valve
• 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 (no gear mechanism)
• Ceramic slide and port for accurate flow and minimal wear
• Balanced force design
• Corrosion resistant stainless steel body and connections