Location of the flame arrester and check valve
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Let’s discuss: under normal circumstances, is a flame arrester installed before or after the check valve?
Flame arresters are generally placed in front of check valves
Behind the valve, it is determined according to the flow direction: the inlet side is the front, and the outlet side is the back. There are two types of flame arrestors: one is of the fuse-type, and the other is of the check valve type.
A flame arrester; it doesn’t seem to be the kind of flame arrester installed on hazardous materials vehicles