Single-piece manifold with reduced pressure arrangement
AssigneePotter Electric Signal Company, LLC
InventorDavid Royse
Life of this patent
Estimating the term…
Abstract
A single-piece manifold comprising a body having an inlet in communication with a water supply and an outlet that communicates with a sprinkler system having a main conduit adapted for fluid flow between the inlet and the outlet is disclosed. The body includes a main valve that provides a means of manually shutting off communication with the water supply and first and second check valves positioned across the main conduit for preventing fluid flow therethrough until the sprinkler system is activated. The single-piece manifold has a reduced pressure arrangement comprising a valve member that vents water that may build up between the first and second check valves in order to prevent the back flow of contaminated water from the sprinkler system to the water supply.
Claims26
A single-piece manifold for a fire sprinkler system comprising:
- a body defining a main conduit therethrough in communication with an inlet for connecting the single-piece manifold to a supply of water and an outlet for connecting the single-piece manifold to the fire sprinkler system,
- a first check valve and a second check valve within said main conduit for preventing or permitting fluid flow communication through said main conduit, a first pressure zone defined between said inlet and said first check valve and a second pressure zone defined between said first check valve and said second check valve, and
- a valve member in communication with said first pressure zone and said second pressure zone for preventing water from said second pressure zone from flowing back into said first pressure zone.
A single-piece manifold comprising:
- a body defining a main conduit therethrough in communication with an inlet for connecting the single-piece manifold to a supply of water and an outlet for connecting the single-piece manifold to a sprinkler system, said body having a first pressure zone having a first pressure and a second pressure zone having a second pressure, and
- a valve member in communication with said first pressure zone and said second pressure zone, said valve member being operable between a normally closed position to prevent fluid flow and an open position that permits fluid flow.
A single-piece manifold comprising:
- a body defining a main conduit therethrough in communication with an inlet for connecting the single-piece manifold to a supply of water and an outlet for connecting the single-piece manifold to a sprinkler system,
- a first check valve and a second check valve within the main conduit for preventing or permitting fluid flow communication through the main conduit, a first pressure zone defined between the inlet and the first check valve and a second pressure zone defined between the first check valve and the second check valve;
- a valve member in communication with the first pressure zone and the second pressure zone for preventing water from the second pressure zone from flowing back into the first pressure zone, and a vent passageway in communication with the main conduit for preventing said water from flowing through the main conduit when there is a pressure surge in the supply of water.
Dependencies are inferred from the claim text.