Abstract: An improved brass alloy providing improved ability for machining is detailed that is free of lead and is at the same time environmental friendly. The alloy comprises added alloying elements in an amount that is identified through an iterative process during manufacturing of the alloy.

Abstract: An improved brass alloy providing improved ability for machining is detailed that is free of lead and is at the same time environmental friendly. The alloy comprises added alloying elements in an amount that is identified through an iterative process during manufacturing of the alloy.

Abstract: A coupling includes a coupling housing and a coupling member. The coupling housing consists of a first housing part and a second housing part capable of being screwed together axially. Each of the first housing part and the second housing part has an internal conical surface, wherein, in a position that the first housing part and the second housing part are screwed together, the inner circumference of each of the internal conical surfaces generally lessen towards outward ends thereof, respectively. The coupling member is situated in the housing for clamping a tube inserted in the coupling housing. The coupling member is influenced axially by a conical clamping ring by cooperation with the conical surface in the first housing part and influences a resilient ring which causes sealing between the tube and the second housing part. One end of the coupling member is shaped as axial, flexible fingers separated by splits.

Abstract: A coupling comprising a coupling housing consisting of a first and a second housing part (1, 2) which can be screwed together axially, each of which having an internal conical surface (3; 4) with, in the position of use, oppositely directed conicity in the two conical surfaces. A coupling member (5) situated in the coupling housing is adapted to, by the screwing together, to be influenced axially by a conical clamping ring (6) by cooperation with the conical surface (3) in the first housing part (1), for clamping of a tube inserted in the coupling housing, whereby the coupling member (5) by the screwing together influences a resilient ring (7) which causes sealing between the tube and the second housing part (2).