Vented port-cap for fire hydrant

Details Vented port-cap for fire hydrant Vented port-cap for fire hydrant

2007-10-09

2007-10-09

Lee, Kevin (Department: 3753)

Fluid handling

Hydrant type

With casing

C137S107000, C137S302000, C137S015190

Reexamination Certificate

active

11214715

ABSTRACT:
The vented port-cap includes a check-valve, which admits air into the barrel of the hydrant when the pressure inside is lower than the pressure outside. After an inspection of the hydrant, the hydrant can be left to drain by itself, even though the port-cap has been replaced and tightened.

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