outside diameter of neck A , in mm	S for PN 2.5, in mm	S for PN 6, in mm	S for PN 10, in mm	S for PN 16, in mm
17.2	2	2	2	2
21.3	2	2	2	2
26.9	2	2	2	2
33.7	2	2	2	2
42.4	2	2	2	2
48.3	2	2	2	2
60.3	2	2	2	2
76.1	2	2	2	2
88.9	2	2	2	3.2
114.3	3.2	3.2	3.2	3.2
139.7	3.2	3.2	3.2	3.5
168.3	3.5	3.5	3.5	4.5
219.1	4.5	4.5	4.5	5.6