Controlled discharge gas vent
AssigneesHoltec Gas Systems, Engineered Corrosion Solutions, LLC
InventorsDavid J. Burkhart, Jeffrey T. Kochelek, Kenneth Jones, Thorstein Holt
Life of this patent
Estimating the term…
Abstract
A fire protection system includes a dry pipe system and a controlled discharge gas vent. The dry pipe system and controlled discharge gas vent operate using a breathing cycle to displace oxygen and/or water vapor from within the piping network of the dry pipe system. The controlled gas discharge vent allows displacement of pressurized air with nitrogen, for example, using manual or automated processes that can employ one or more sensors. Corrosion resulting from oxygen, water, and/or microbial growth is reduced or nearly eliminated.
Claims22
1-24. (canceled)
A controlled discharge gas vent for a dry pipe fire sprinkler system, the controlled discharge gas vent comprising:
- a liquid sensing valve;
- a back pressure regulator having a threshold pressure;
- and
- an orifice operable to provide a flow rate of gas therethrough;
- wherein the liquid sensing valve is adapted to allow gas discharge but not liquid discharge from a piping network when the liquid sensing valve is coupled to the piping network;
- and
- wherein the back pressure regulator is operable to open when a pressure in the piping network exceeds the threshold pressure and close when the pressure in the piping network is below the threshold pressure.
A fire protection system comprising:
- a sprinkler system including at least one sprinkler, a source of pressurized water, a piping network connecting the at least one sprinkler to the source of pressurized water, and a controlled discharge gas vent according to claim 68;
- and
- a source of pressurized gas coupled to the sprinkler system.
Dependencies are inferred from the claim text.