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Accessories for use with refrigerant R744.
These valves are exclusively sold in the model without coil (S suffix).

Coils with the new FAST LOCK fixing system, series 9320, and coils with gear fixing systems, series 9120 and 9121 to be used with normally closed solenoid valves.
Fast-on connections type DIN 43650/A for coils in series 9120 and 9320; co-moulded cables for series 9121 coils.
Available voltages: 220/230 VAC - 50/60 Hz, 12 VDC, 24 VDC, 27 VDC, 48 VDC.
Connectors in series 9150, normalized DIN 43650, to wire, with IP65 protection rating. Connectors in series 9900, again normalized DIN 43650, pre-wired with various cable lengths, with IP65 protection rating.

The "SMART CONNECTOR" systems series 9910 are formed by coupling a connector in series 9152, equipped with an integrated electronic circuit in the connector, with a specific series 9300 coil designed for the connector. These systems have been designed by Castel to be installed on solenoid expansion valves and they allow for:
- a reduction in energy consumption when fully operational with consequent reduction in operating temperature
- an extension of the coil life
- an increase in the MOPD value of the valve
IP65 protection rating. Available voltages; 24 VAC - 50/60 Hz, 220/230 VAC - 50/60 Hz, 240 VAC - 50/60 Hz, 12 VDC, 24 VDC.

Magnetic tool part number 9900/X91 can be used on all Castel normally closed solenoid valves. Used during brazing of copper connections of the solenoid valve to the line piping allows the valve to be opened and for passage of the protective gas inside the valve. This avoids damage due to overheating of both the nucleus gasket and the membrane/piston gasket.