CPC F16K 41/02 (2013.01) [F16K 41/16 (2013.01)] | 20 Claims |
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.
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