How to install the manual valve behind the safety valve
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For the back valve of a safety valve, should the valve stem be installed vertically or at an angle? Which standards can provide information on this?
Check the regulations on the safety technical inspection of safety valves under [Reading Permission 50]: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=*070004&shareuid=*0**99; there are *05 items related to TSG ZF00*-*006, the regulations on the safety technical inspection of safety valves: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=****90&shareuid=*0**99. The details are not clear.
The back valve of a safety valve is generally installed at the threaded outlet of the safety valve via a threaded connection. The following points should be noted during installation: 1. The valve stem of the backhand valve should be installed vertically to ensure proper operation. 2. Sufficient space should be left between the safety valve and the backup valve to facilitate operation and maintenance. 3. After installation, a leak test should be conducted to ensure that the sealing performance meets the requirements. For the specific installation requirements and specifications regarding the manual valve placed after a safety valve, it is possible to refer to relevant industry standards or product manuals; for example, **Standard GB/T 12242-2005 \"Safety Valves\" may contain relevant provisions. Additionally, it is also possible to consult the manufacturer or professionals to ensure proper installation. .