The connection principle used in the Series 2N from EM-TECHNIK entails pushing the pipe against the inner edge of the connector and sealing with a sealing ring. The pipe is secured in place by a cutting ring, which is forced against the pipe by a nut. The more the nut is screwed onto the connector body, the more the slotted cutting ring wedges the pipe. The result is a tight, friction-locked connection, which can be released at any time. The design concept eliminates the dead volume. It also has no effect on the flow because the inside diameter is identical to that of the pipe.