Single-piece manifold with reduced pressure arrangement

Details Single-piece manifold with reduced pressure arrangement Single-piece manifold with reduced pressure arrangement

2007-11-13

2007-11-13

Huson, Gregory (Department: 3753)

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

C137S512000

Reexamination Certificate

active

11091236

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.

REFERENCES:
patent: 3173439 (1965-03-01), Griswold et al.
patent: 3724487 (1973-04-01), Hunter
patent: 4090527 (1978-05-01), Sutherland
patent: 4217921 (1980-08-01), Gidner
patent: 4276897 (1981-07-01), Griswold
patent: 4849739 (1989-07-01), Loiacono
patent: 4878515 (1989-11-01), Stevens
patent: 4895180 (1990-01-01), Vollmer
patent: 4945940 (1990-08-01), Stevens
patent: 5363875 (1994-11-01), Vollmer
patent: 5425393 (1995-06-01), Everett
patent: 5469879 (1995-11-01), Rasmussen
patent: 5522796 (1996-06-01), Dorsey, III
patent: 5669405 (1997-09-01), Engelmann
patent: 6102066 (2000-08-01), Craig et al.
patent: 6138706 (2000-10-01), Brint
patent: 6206025 (2001-03-01), Koch et al.
patent: 6443173 (2002-09-01), Thompson, Jr.
patent: 6446652 (2002-09-01), Horne et al.
patent: 6540028 (2003-04-01), Wood
patent: 6540205 (2003-04-01), Stafford
patent: 6824118 (2004-11-01), Stafford
patent: 6860331 (2005-03-01), Hagen et al.
patent: 2002/0108759 (2002-08-01), Hagen et al.
patent: 2002/0121302 (2002-09-01), Thompson, Jr.

Affiliated with

Also associated with

Rating

Single-piece manifold with reduced pressure arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single-piece manifold with reduced pressure arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-piece manifold with reduced pressure arrangement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3886234