US 12,188,618 B2
Calibrated gauge tool for checking pressures on installed inert systems per NFPA
Paul M. Johnson, Clinton, MA (US)
Assigned to KIDDE-FENWAL, LLC, Ashland, MA (US)
Appl. No. 17/252,647
Filed by KIDDE-FENWAL, LLC, Ashland, MA (US)
PCT Filed Sep. 17, 2019, PCT No. PCT/US2019/051381
§ 371(c)(1), (2) Date Dec. 15, 2020,
PCT Pub. No. WO2020/060961, PCT Pub. Date Mar. 26, 2020.
Claims priority of provisional application 62/732,137, filed on Sep. 17, 2018.
Prior Publication US 2021/0270422 A1, Sep. 2, 2021
Int. Cl. A62C 37/50 (2006.01); F16L 29/00 (2006.01); F16L 41/00 (2006.01); F17C 13/02 (2006.01); G01L 7/00 (2006.01); G01L 19/00 (2006.01)
CPC F17C 13/025 (2013.01) [F16L 29/002 (2013.01); F16L 41/008 (2013.01); G01L 7/00 (2013.01); G01L 19/0015 (2013.01); A62C 37/50 (2013.01); F17C 2205/0382 (2013.01); F17C 2250/043 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A system comprising:
an agent cylinder, comprising a valve port and a check valve in the valve port; and
a gauge tool having an inlet arranged to removably connect to the valve port of the agent cylinder,
the gauge tool, comprising:
a valve body extending along a first axis between a first valve body end and a second valve body end, the valve body defining a valve seat, the inlet extending through the valve seat along the first axis, and an outlet extending along a second axis that is disposed transverse to the first axis;
a valve member movably disposed within the valve body, the valve member extending between a first valve member end and a second valve member end along the first axis; and
a drive member connected to the second valve member end, responsive to actuation of the drive member relative to the first axis, the valve member is movable relative to the valve seat between a first position that inhibits a fluid flow between the inlet and the outlet and a second position that facilitates the fluid flow between the inlet and the outlet;
wherein the gauge tool is configured such that the fluid flow is facilitated between the inlet and the outlet of the gauge tool upon a protrusion of the valve member engaging the check valve in the valve port of the agent cylinder;
and the gauge tool is configured such that the fluid flow is inhibited between the inlet and the outlet of the gauge tool upon the protrusion of the valve member being spaced apart from the check valve in the valve port of the agent cylinder.