jscottelwood
Member
- Location
- Oklahoma
My company is installing drain plugs on purged panels (enclosures) (Hoffman NEMA 4).
The enclosures are in a Class I, Division 2, Groups B and D environment. (Hydrogen)
Here is the question:
The purged panels are vented with a one way vent (flapper style) so no ambient atmosphere can enter upon failure of the purging system.
My company is using an ECD-15 universal vent/drain installed in a meyers hub for the draining method.
The meyers hub will allow approximately 1/2" of water to accumulate before spilling over the inside lip of the hub. (this is unacceptable)
I have therefore replaced the drain with a Crouse-Hinds ACDPEN/M20/15.
I am still wondering two things.
By whose authority and direction did we install drains in these panels to start with and can I get a one way drain that doesn't have to be screwed into a meyers hub to be installed?
I really don't want to have to modify the hub by drilling holes (horizontally) in its threaded base to allow water out.
Thank you,
Jeff E. (Fab. I & E Tech.)
The enclosures are in a Class I, Division 2, Groups B and D environment. (Hydrogen)
Here is the question:
The purged panels are vented with a one way vent (flapper style) so no ambient atmosphere can enter upon failure of the purging system.
My company is using an ECD-15 universal vent/drain installed in a meyers hub for the draining method.
The meyers hub will allow approximately 1/2" of water to accumulate before spilling over the inside lip of the hub. (this is unacceptable)
I have therefore replaced the drain with a Crouse-Hinds ACDPEN/M20/15.
I am still wondering two things.
By whose authority and direction did we install drains in these panels to start with and can I get a one way drain that doesn't have to be screwed into a meyers hub to be installed?
I really don't want to have to modify the hub by drilling holes (horizontally) in its threaded base to allow water out.
Thank you,
Jeff E. (Fab. I & E Tech.)