
Solenoid valves, CO2
Solenoid valves for CO₂ are used to open, close, or control refrigerant flow in refrigeration systems that operate with R744 (CO₂). In cold room applications that use CO₂ refrigeration, they support shut-off and control functions within the refrigeration circuit and fit into the wider cold room component set together with the condensing unit, controller, expansion valve, filter drier, and evaporator.
This category includes product options for high-pressure CO₂ systems and compact refrigeration systems, depending on the application need. Beyond cold rooms, these valves are also relevant for food retail, commercial refrigeration, refrigeration appliances, liquid coolers, ice cube machines, mobile refrigeration systems, heat pumps, and air conditioning units.
Features and benefits
- Designed for CO₂ refrigeration applications
- Supports shut-off and refrigerant flow control in refrigeration systems
- Relevant for cold room systems that use CO₂ as well as broader refrigeration applications
- Includes direct and servo operated valve options, depending on the product family
- Suitable for specific line functions such as oil return, pressure equalization or relief control, high-pressure hot gas bypass or dump, and hot gas defrost on EVT
- Supports compact refrigeration system use through EVUL
- Designed for media temperatures up to 150 °C and working pressures up to 140 bar on EVT
- Available with copper solder connections for brazing and stainless-steel connections for Swagelok fittings on EVT
- Built with compact construction and robust design for long lifetime
- Supplied in normally closed configuration on EVT
Product types shown: 2

EVT
EVT high pressure range is a direct or servo operated solenoid valve specially designed to fit into CO2 transcritical refrigeration systems.
They can be applied in following applications:- EVT 1.2 direct operated for oil return, pressure equalization/relief control, high pressure hot gas bypass/dump and hot gas defrost.
- EVT 2.0 and 3.0 servo operated for high pressure hot gas bypass/dump and hot gas defrost application.
- EVT valves and coils are sold separately.
- EVT 1.2 direct operated for oil return, pressure equalization/relief control, high pressure hot gas bypass/dump and hot gas defrost.

EVUL
EVUL solenoid valves are designed to fit into compact refrigeration systems. Available in servo operated versions they can be applied in liquid, suction, and hot gas lines.
EVUL solenoid valves can be used in many different refrigeration systems and are specially designed for:- Commercial refrigeration systems
- Refrigeration appliances
- Liquid coolers
- Ice cube machines
- Mobile refrigeration systems
- Heat pump systems
- Air conditioning units