As a secure closure to protect against damage or contamination of the inlet connection of pressure regulators or high-pressure hose lines. Useful when the connection between gas cylinders and fittings is disconnected or the gas system is shut down for a longer period.

Note (1/2): The use of the screw plug on regulators with gas non-return valve, such as Caramatic BasicTwo, is not permitted.

Note (2/2): The pressure regulator is not included!