castel changeover valves co2castel changeover valves co2

Changeover valves CO2

Connections: NPT
Suitable for: R744 (CO2)
Maximum pressure (PS): 120 bar
Temperature range (TS): -40 to +150 ºC

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  • See table below in tabs for specifications of all types.


The valve is a three-way shutoff valve for refrigerating or air-conditioning systems. It is designed for the installation of two safety valves in a system and makes it possible to replace the de-pressurized safety valve while the system continues running. According to DIN EN 378-2
the valve can only be handled with a tool. The valve has one inlet and two outlets. In end position the spindle always closes up one of the two outlets.

Please see next tab for all types and specifications

Types and connections

TypeConnectionConn. InConn. out (2x)Kv [m3/h]PS [bar]TS [°C] min/maxArt. nr.
550295In NPT male x out NPT fem.1/2"1/2"4,0160-10 / +140..
3032E/33In NPT male x out NPT fem.3/8"3/8"2,5120-40 / +150181500
3032E/44In NPT male x out NPT fem.1/2"1/2"3,3120-40 / +150181510
3032E/64In NPT male x out NPT fem.3/4"1/2"9120-40 / +150181520
3032E/66In NPT male x out NPT fem.3/4"3/4"9120-40 / +150181530
3032E/88In NPT male x out NPT fem.1"1"14,5120-40 / +150181540
3032E/108In NPT male x out NPT fem.1.1/4"1"20120-40 / +150181550