Patent ID: 8733574
Filing Date: 2014-05-27
Classification: A47J,Y10T

Abstract:
1. A valve unit for a pressure vessel, the latter consisting of a receptacle and a lid which can be placed on said receptacle in such a way as to make it pressure-tight and said valve unit including: a safety function, pressure-relief function and pressure indicator function; adjustable indicator levels and pressure levels; an indicator pin ( 4 ) or indicator piston, which is supported against an indicator spring ( 7 ), can move in axial direction and bears on its portion becoming visible upon pressurization, due to its emergence from a valve housing ( 12 ), circular indicator regions, for indicating the pressure inside the vessel; and comprising a valve body ( 5 ) which is movable in axial direction against the action of an exhaust steam spring ( 6 ) and, in the closed position, rests against a seal seat ( 19 ), lifting off from this, when a given internal pressure of the vessel is exceeded, to uncover a pressure-relief aperture ( 20 ), wherein both the indicator spring ( 7 ) and the exhaust steam spring ( 6 ) are braced in the same direction against a common, axially adjustable pressure member ( 8 ), the pressure member ( 8 ) being an abutment for the indicator spring ( 7 ) and the exhaust steam spring ( 6 ) and provides abutments for the ends of the indicator spring ( 7 ) and the exhaust steam spring ( 6 ), and the pressure member ( 8 ) being adjustable in an axial direction with respect to the lid by turning a rotary element ( 12 ′) formed by the valve housing so that the abutments for the indicator spring ( 7 ) and the exhaust steam spring ( 6 ) move equally with respect to the lid, wherein the pressure member ( 8 ) is a separate element within the valve housing that has an external thread, which cooperates with a corresponding internal thread of the rotary element ( 12 ′).