Attentions for installation and maintenance of safety valve:
(1) The newly installed safety valve shall be accompanied by a certificate of product qualification. Before installation, it shall be re-checked, sealed with lead and checked with safety valve.
(2) Safety valves shall be installed vertically and installed at the gas-phase interface of the container or pipeline.
(3) There should be no resistance at the exit of the safety valve to avoid back pressure. If the discharge pipe is installed, its inner diameter should be larger than the outlet diameter of the safety valve. The outlet of the safety valve should be frozen-proof. For containers containing flammable or toxic or highly toxic media, the discharge pipe should go directly to the outdoor safe place or facilities for proper treatment, and self-regulated. Valve discharge pipes are not allowed to install any valves.