US 12,215,801 B2
Valve packing apparatus and related methods
Lucas Schmitt, Conrad, IA (US); Steven Hostetter, Colfax, IA (US); Aaron Anderson, Marshalltown, IA (US); and Lisa Miller, Marshalltown, IA (US)
Assigned to Fisher Controls International LLC, Marshalltown, IA (US)
Filed by Fisher Controls International LLC, Marshalltown, IA (US)
Filed on Aug. 26, 2022, as Appl. No. 17/896,872.
Prior Publication US 2024/0068596 A1, Feb. 29, 2024
Int. Cl. F16K 41/02 (2006.01); F16K 41/16 (2006.01)
CPC F16K 41/02 (2013.01) [F16K 41/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus to install a valve packing comprising:
a cartridge having a first end and a second end, the first end dimensioned to fit in a bore of a bonnet of a valve, the cartridge including:
packing components;
a flange to couple the cartridge to the bonnet;
an aperture disposed between the second end of the cartridge and the flange; and
a spring; and
a retainer disposed in the aperture of the cartridge to prevent the spring from applying a compressive load to the packing components, the retainer, when removed from the aperture, to release the spring to apply a predetermined compressive load to the packing components.