US 11,852,261 B2
Valve with exchangeable packing seal cartridge
Paul Jeffrey Parish, Spanish Fork, UT (US); Michael P. Nelson, Lehi, UT (US); and Ivica Radman, Kaernten (AT)
Assigned to Flowserve Pte. Ltd., Singapore (SG)
Filed by Flowserve Pte. Ltd., Singapore (SG)
Filed on Sep. 27, 2021, as Appl. No. 17/485,678.
Prior Publication US 2023/0101258 A1, Mar. 30, 2023
Int. Cl. F16K 41/02 (2006.01); F16K 41/04 (2006.01); F16K 1/36 (2006.01); F16K 1/46 (2006.01); F16K 1/42 (2006.01)
CPC F16K 41/02 (2013.01) [F16K 1/36 (2013.01); F16K 1/46 (2013.01); F16K 1/422 (2013.01); F16K 41/04 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A valve comprising:
a valve seat within a valve body;
a valve plug configured to control a flow of process fluid through the valve body according to a separation between the valve plug and the valve seat, and/or according to a rotational position of the valve plug within the valve seat;
a valve stem in mechanical communication with the valve plug;
an actuator, the actuator being separated from the valve stem by a linkage gap;
a removable valve stem linkage that bridges the linkage gap and provides a direct mechanical linkage between the actuator and the valve stem, so that rotational and/or linear displacement of the actuator is transferred to the valve stem; and
a seal cartridge removably attached to the valve body and comprising at least one seal that surrounds the valve stem and forms a seal between the seal cartridge and the valve stem, while permitting at least one of linear and rotational movement of the valve stem relative to the seal cartridge;
wherein, upon removal of the removable valve stem linkage, the linkage gap between the actuator and the valve stem is unobstructed; and
wherein, upon disconnecting of the seal cartridge from the valve body, the seal cartridge can be slid along the valve stem into the unobstructed linkage gap until the seal cartridge no longer surrounds the valve stem and can be laterally removed from the valve without modifying the seal cartridge and without disassembling the actuator from the valve body.