Patent ID: 6227223
Filing Date: 2001-05-08
Classification: F16K,Y10T

Abstract:
In combination with a transportable tank having an opening in said tank, a manway attached to said opening, said manway having a port therethrough, said manway having attachment points to attach at least one emergency hood for sealingly isolating said port, a valve attached to said port, said valve comprising:(i) a valve body having a tank end attachable to a manway;(ii) a valve seat positioned in said valve body near said tank end, said valve seat having a valve sealing surface;(iii) a stem chamber extending through said valve body, said stem chamber having an actuator port, a seat port, and an outlet port, said seat port, said actuator port and said outlet port fluidly communicating with said stem chamber, said seat port positioned near said tank end, said outlet port positioned between said actuator port and said seat port;(iv) a valve stem slidably positioned in said stem chamber and extending through said actuator port, said valve stem having a plug end, said valve stem configured to interchangeably receive an actuator selected from the group consisting of a pneumatically-operated actuator and a manually-operated actuator; and(v) a plug attached to said plug end of said valve stem, said plug having a plug sealing surface adapted to sealingly contact said valve sealing surface of said valve seat;wherein said valve and said actuator, when operatively engaged, fit within an emergency hood of said transportable tank when attached to said manway.