US 12,281,712 B2
Boiler pressure relief valve and automatic air vent isolation assembly
Christopher W. Mason, Granger, IN (US); Lisa Lyon, North Grafton, MA (US); and Andrew J. Terry, Sturbridge, MA (US)
Assigned to NIBCO Inc., Elkhart, IN (US)
Filed by NIBCO Inc., Elkhart, IN (US)
Filed on Dec. 21, 2021, as Appl. No. 17/557,473.
Application 17/557,473 is a continuation in part of application No. 17/524,010, filed on Nov. 11, 2021.
Prior Publication US 2023/0145680 A1, May 11, 2023
Int. Cl. F16K 11/20 (2006.01); F16K 11/22 (2006.01); F16K 17/02 (2006.01); F24D 19/08 (2006.01); G01L 19/00 (2006.01)
CPC F16K 11/207 (2013.01) [F16K 11/22 (2013.01); F24D 19/083 (2013.01); G01L 19/0007 (2013.01); F16K 17/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A valve assembly, comprising:
a unitary valve body having a first end section, a second end section, and a medial section located in between said first end section and said second end section, wherein said first end section has opposed first and second ports with a generally perpendicular section that transitions into said medial section; and
said second end section includes a third port that is positioned generally perpendicular to said medial section;
a union member, coupled to said second port;
a valve member located on said unitary valve body below said first port, wherein said valve member opens and closes a fluid passageway leading to said first port;
a pressure relief valve coupled to said third port;
an automatic air vent coupled to said first port;
a fourth port located in said medial section; and
wherein said medial section includes a fifth portion that is positioned opposite said fourth port.