Patent ID: 6109590
Filing Date: 2000-08-29
Classification: F16K,Y10T

Abstract:
An improved control valve of the slide type comprising,a body having a valve chamber with an upstream entrance area and a downstream outlet area,a support cone having an entrance chamber connected to the body extending to the upstream entrance of the valve chamber and a downstream outlet,an upstream flange having an outwardly extending projection welded to the downstream outlet of the cone,an orifice plate provided with an orifice and having an outwardly extending projection,a downstream flange having an outwardly extending projection welded to the orifice plate,the upstream and downstream flanges having abutting surfaces disposed together in abutting relationship about the orifice,a split clamp having clamping surfaces releasably disposed about and clamping together the upstream and downstream flanges by pulling the abutting surfaces together into sealing relationship,an alignment pin disposed between the projections on the upstream and downstream flanges effective to prevent rotation of the upstream and downstream flanges relative to one another thereby maintaining them in alignment,an overhang guide having an inwardly facing support and guide groove disposed about and hanging from the orifice plate in which the outwardly extending projection of the downstream flange is disposed thereby supporting the overhang guide,a valve slide having an outwardly extending slide slidably disposed in the inwardly extending guide groove of the overhang guide downstream of the orifice plate operable to open and close the orifice,whereby the downstream flange, the orifice plate and the overhang guide are released and removed as a unit by separating the split clamp and are replaced and inserted as a unit by clamping them in place by the clamping action of the split clamp.