Patent ID: 9285041
Filing Date: 2016-03-15
CPC Classification: F16K,G05D,Y10T

Claim Text:
1. A control valve between an inlet conduit and an outlet conduit, said control valve being configured for regulating the flow of a fluid at a pressure in one of said inlet conduit and said outlet conduit, said control valve comprising: a valve body including an interior chamber and a loading chamber; a valve body cover configured for removable attachment to said valve body to seal said interior chamber; an inlet formed in and through said valve body for communicating a fluid from the inlet conduit to said interior chamber; a plurality of plates positioned within said interior chamber, said plurality of plates including a first plate located within said interior chamber, said first plate having a second plate located within said interior chamber proximate and downstream of said first plate, said second plate having at least a diaphragm having an upper side positioned proximate said loading chamber and a lower side spaced apart from said upper side, said lower side being positioned proximate said first plate, said diaphragm being operable between a first diaphragm position in which said fluid is inhibited from passing into and through said at least one first plate aperture and a second diaphragm position in which fluid passes into and through said at least one first plate aperture and said diaphragm being formed to effect a seal against said ridge when in said first diaphragm position; a biasing member positioned to apply a preselected force to urge the diaphragm toward said first position, said preselected force being selected so that said diaphragm moves from said first position toward said second position when said pressure of said fluid in one of said inlet conduit and said outlet conduit is sufficient to urge said diaphragm from said first position toward said second position for said fluid in said interior chamber to pass into and through at least said first row of first plate apertures; and a pilot valve assembly connected to receive regulating fluid at pressure which is said fluid at pressure in one of said inlet conduit and said outlet conduit, said pilot valve assembly having an outlet in fluidic communication with said loading chamber to direct said regulating fluid at pressure to urge said diaphragm to move between said first diaphragm position and said second diaphragm position to vary the flow of said fluid through at least said first row of first plate apertures to maintain the pressure of fluid in said outlet conduit at a selected pressure; and an outlet formed in and through said valve body for communicating fluid from said plurality of stacked plates and said interior chamber to said outlet conduit.