Patent ID: 9279516
Filing Date: 2016-03-08
CPC Classification: F16K,G05D

Claim Text:
1. A fluid regulator, comprising: an actuator assembly comprising an upper casing, a lower casing secured to the upper casing, and a diaphragm assembly disposed between the upper casing and the lower casing; a body assembly secured to the actuator assembly, the body assembly comprising a stem assembly operatively connected to the diaphragm assembly to move with the diaphragm assembly; and a balancing system disposed between the actuator assembly and the body assembly, the balancing system comprising a second diaphragm operatively connected to the stem assembly to move with the stem assembly; wherein the lower casing of the actuator assembly includes a wall defining a portion of a balancing cavity that receives the balancing system and an inner surface that ends at a shoulder, the wall having an annular groove formed in the inner surface of the wall that receives a portion of the second diaphragm of the balancing system as the fluid regulator moves from a fully open position to a lockup position.