Patent ID: 6050288
Filing Date: 2000-04-18
Classification: F16K,Y10T

Abstract:
An improved slide valve for control of flow therethrough 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 adjacent the upstream entrance of the valve chamber and having a downstream end area,an orifice plate provided with an orifice,a circumferentially extending annular weld-on stub welded to the orifice plate extending upwardly from around the orifice,a circumferentially extending attachment stub surrounding and welded by a fillet weld adjacent its upper end to the annular weld-on stub, the fillet weld being in compression by flow through the slide valve,the support cone being welded adjacent its downstream end to an external surface of the circumferentially extending attachment stub,a guide assembly having a guide plate with an opening in alignment with the orifice of the orifice plate secured to the orifice plate,the guide assembly having inwardly extending guides,a valve slide having outwardly extending slides disposed in the inwardly extending guides,whereby the orifice plate, guide assembly, and circumferentially extending weld-on stub can be released as a unit by cutting the fillet weld and withdrawn through the bonnet area, and replaced through the bonnet area and welding the circumferentially extending weld-on stub to the circumferentially extending attachment stub by a fillet weld.