The simplest application is to use push-in pipes:
Roll the ring seal onto the push-in pipe, push it as far as required into the normal pipe, roll the ring seal back to the lip of the normal pipe and press it by means of a pull ring (without seal). This connection is not shock-explosion proof. Admissible differential pressure 100 mbar (1000 mm WG, 10.000 PA).
Push-in pipe connections cannot absorb any axial forces. The piping must be fixed on site so that it cannot displace. For horizontally installed pipelines a support of the pipes must be planned in the area of the connection in order to prevent the pipeline from sagging. As the area between the push-in pipe and the normal pipe is difficult to keep clean, a push-in pipe is not recommended in case of higher requirements with regard to hygiene.
In case of formation of condensation the push-in pipe must be mounted in a way, that in the area between the pipes no liquid may gather. The flow direction for air is not defined. Solid materials may only be conveyed from the push-in pipe in the direction of the normal pipe. The sealing of the push-in pipe with rubber bead ring and clamping ring must be used for 3 mm thick piping – but it may be also used for smaller wall thicknesses.
Push-in pipes are not telescopic pipes that can be adjusted during operation.