Lock nut for the safe operation of two-cylinder systems with automatic change-over valve, DuoComfort, DuoControl or DuoControl CS with only one gas cylinder.

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

Advantages and equipment
- with fastening lug

Technical data
- Material: locking nut: brass
- Thread: M20 x 1.5 ܍

Note
- The pressure regulator is not included in the scope of delivery!