- Nov 25, 2005
- 8,390
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Looking at plumbing/drainage P&ID/schematic drawings..
I can't seem to find the what the physical difference between:
HB - Hub Drain
FD - Floor Drain
We also have FFD - Funnel Floor Drain, which is just FD w/ a funnel on top used for HVAC condensate drains.
Even by verifying out in the field, I couldn't tell the difference except for recessed vs flush with floor grating... any help? Tried google but got nothing
(at Pharmaceutical manufacturing plant)
I can't seem to find the what the physical difference between:
HB - Hub Drain
FD - Floor Drain
We also have FFD - Funnel Floor Drain, which is just FD w/ a funnel on top used for HVAC condensate drains.
Even by verifying out in the field, I couldn't tell the difference except for recessed vs flush with floor grating... any help? Tried google but got nothing
(at Pharmaceutical manufacturing plant)
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