US 12,442,456 B2
Systems and methods for a valve and a valve assembly
Chen Jing, Shanghai (CN); Chen Yuanyuan, Shanghai (CN); Li Chen Chen, Shanghai (CN); Nalinkumar Rajput, Stafford, TX (US); and Vishwa Kalyanasundaram, Stafford, TX (US)
Assigned to Emerson Automation Solutions Final Control US LP, Houston, TX (US)
Filed by Emerson Automation Solutions Final Control US LP, Houston, TX (US)
Filed on Dec. 5, 2023, as Appl. No. 18/529,129.
Claims priority of application No. 202211560417.4 (CN), filed on Dec. 7, 2022.
Prior Publication US 2024/0191807 A1, Jun. 13, 2024
Int. Cl. F16K 17/04 (2006.01)
CPC F16K 17/04 (2013.01) 20 Claims
OG exemplary drawing
 
1. A spring-operated relief valve comprising:
a valve body;
a nozzle with a nozzle sealing surface;
a main spring positioned between a bottom spring seat and a top spring seat;
a valve seat configured to form a seal with the nozzle sealing surface when the spring-operated relief valve is in a closed orientation;
a spindle having a distal end and a proximal end, the distal end arranged to urge the bottom spring seat toward the top spring seat as the valve seat is moved away from the nozzle during a valve relief event to compress the main spring between the bottom spring seat and the top spring seat; and
a seat retainer having an inner bore that receives the valve seat and threadably receives the proximal end of the spindle to couple the spindle to the seat retainer and axially secure the valve seat within the inner bore, with a sealing end of the valve seat extending out of the inner bore at a sealing end of the seat retainer.