Revised Standard from Last Update.

1. SCOPE

This standard prescribes dimensions, tolerances and material requirements of inspection gauges recommended for checking the taper thread on the valve stems and the threads in the cylinder necks of valve fitting conforming to Type 2 of IS 3224 and Type 2 of IS 8737. These threads are denoted as 17E and 25E. This standard also mentions the thread details of these 17E and 25E valve stems and cylinder necks.

2. REFERENCES

The Indian Standard listed in below contain provisions which, through reference in this text, constitute provision of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below:

IS 1570 : Part 2 : 1979 Schedules for wrought steels: Part 2 Carbon steels (unalloyed steels) (first revision)

IS 3224 : 2021 Valve for compressed gas cylinders excluding liquefied petroleum gas (LPG) cylinders - Specification (fourth revision)

IS 8737 : 2017 Valve fittings for use with liquefied petroleum gas (LPG) cylinders for more than 5-litre water capacity - Specification (second revision)