BSP pipe fittings pressure temperature is also specified by ISO 8434 6, it rated pressures for 60° cone connector ends.
60° cone connectors in conformance with this part of ISO 8434 made of carbon steel shall meet or exceed without leakage the requirements from a vacuum of 6,5 kPa (0,065 bar) absolute pressure to the rated pressures given in Table 1 when used at temperatures between –40 °C and +120 °C. For stud end connectors, the upper
limit shall be the lower of the rated pressure given in Table 1 and the rated pressure for the relevant stud end, i.e., ISO 1179-2, ISO 1179-3 or ISO 6149-3.
Rated pressures for 60° cone connector ends
Rated pressure a With O-ring Without O-ring Tube outside diameter Thread size MPa (bar) MPa (bar)
6 G 1/8 A – – 35 (350)
8 G 1/4 A 40 (400) 35 (350)
10 G 3/8 A 40 (400) 35 (350)
12 G 1/2 A 35 (350) 31,5 (315)
16 G 5/8 A 35 (350) 31,5 (315)
20 G 3/4 A 31,5 (315) 25 (250
25 G 1 A 25 (250) 20 (200)
32 G 1 ¼ A 20 (200) 16 (160)
38 G 1 ½ A 16 (160) 12,5 (125)
50 G 2 A 12,5 (125) 8 (80)