Patents Assigned to Promosint & Contractors S.r.l.
  • Dump valve
    Patent number: 4771802
    Abstract: A dump valve having a valve body provided with a closure piston plug for alternately closing a compressed gas feed aperture in a valve cover and a dump aperture connected to a user structure, the valve body also having a third aperture communicating with a compressed gas storage tank. Mainly to avoid gripping, the closure piston plug has the form of a hollow cylinder open at one end and slidably engaging a cylindrical guide member forming part of the valve cover and extending axially within the valve body.
    Type: Grant
    Filed: June 2, 1987
    Date of Patent: September 20, 1988
    Assignee: Promosint & Contractors S.r.l.
    Inventor: Sergio Cristiano