Valve

Abstract

Valve for discharging foaming agents from pressurized containers with said valve sealing off the pressurized container to the outside and being provided with an outlet opening furnished with a closure part ( 4 ) movably arranged therein and retained in closed position by means of a spring element ( 21 ) and, when actuated externally, clearing an outlet opening for the foaming agent present in the pressurized container, said valve being mounted on a container cover designed to function as a valve disk ( 1 ), so that the valve disk ( 1 ) has a sealing face designed to act as valve seat ( 6 ) with said sealing face interacting with a sealing element ( 7 ), and the valve disk ( 1 ) and the sealing element ( 7 ) being made of a rigid, functionally non-deformable material and the sealing effect being brought about by an elastic element ( 17 ) arranged on the valve disk ( 1 ), and the spring element ( 9, 21, 30 ) that holds the sealing element ( 7 ) in closing position being directly secured to the valve disk ( 1 ).

1 . Valve for discharging foaming agents from pressurized containers with said valve sealing off the pressurized container to the outside and being provided with an outlet opening furnished with a closure part ( 4 ) movably arranged therein and retained in closed position by means of a spring element ( 21 ) and, when actuated externally, clearing an outlet opening for the foaming agent present in the pressurized container, said valve being mounted on a container cover designed to function as a valve disk ( 1 ), characterized in that the valve disk ( 1 ) has a sealing face designed to act as valve seat ( 6 ) with said sealing face interacting with a sealing element ( 7 ), and the valve disk ( 1 ) and the sealing element ( 7 ) being made of a rigid, functionally non-deformable material and the sealing effect being brought about by an elastic element ( 17 ) arranged on the valve disk ( 1 ), and the spring element ( 9 ,  21 ,  30 ) that holds the sealing element ( 7 ) in closing position being directly secured to the valve disk ( 1 ).  
   
   
       2 . The valve according to  claim 1 , characterized in that the movable closure part ( 4 ) is brought into and kept in closing position by the tractive force of a helical spring ( 9 ) with said helical spring ( 9 ) resting on a shoulder ( 10 ) of the closure part ( 4 ).  
   
   
       3 . The valve according to  claim 1 , characterized in that the movable closure part ( 4 ) is brought into and kept in closing position by the compressive force of a spring tongue ( 21 ) with the spring element ( 30 ) being secured to the inside of the valve disk ( 1 ).  
   
   
       4 . The valve according to  claim 3 , characterized in that the spring element ( 30 ) is secured to the inside of the valve disk ( 1 ) in a form- and/or force-closed manner.  
   
   
       5 . The valve according to  claim 4 , characterized in that the spring element ( 30 ) is secured to the valve disk ( 1 ) by a crimping or clamping method.  
   
   
       6 . Valve according to any one of the above claims, characterized in that the elastic element ( 16 ,  17 ) is a sealing body or a sealing disk.  
   
   
       7 . The valve according to  claim 6 , characterized in that the sealing disk ( 17 ) is arranged between the valve seat ( 6 ) and the sealing element ( 7 ).  
   
   
       8 . The valve according to  claim 6 , characterized in that the sealing body ( 16 ) is fitted into an inner cylindrical extension of disk ( 1 ) and retained in position by upper and lower radial enlargements with the lower radial enlargement interacting with the valve seat ( 6 ) and the sealing element ( 7 ) so as to provide a tight seal.  
   
   
       9 . The valve according to  claim 7 , characterized in that the sealing disk ( 17 ) is secured to the valve disk ( 1 ) by a crimping or clamping method.  
   
   
       10 . Valve according to any one of the above claims, characterized in that the closure part ( 4 ) comprises of a valve stem and the sealing element ( 7 ) and being of one- or two-component design.  
   
   
       11 . Valve according to any one of the above claims, characterized in that the base of the closure part ( 4 ) is enlarged radially to form the sealing element ( 7 ).  
   
   
       12 . The valve according to  claim 10 , characterized in that the sealing element ( 7 ) is a separate, molded part that acts on the valve seat ( 6 ) via the elastic element ( 17 ).  
   
   
       13 . The valve according to  claim 12 , characterized in that the sealing element ( 7 ) is a bowl-shaped, molded metallic part retained in closing position by means of a spring tongue ( 21 ) acting on the bottom.  
   
   
       14 . Sealing element according to any one of the above claims, characterized in that the closure part ( 4 ) has been provided with an inside longitudinal bore terminating in radially extending bores or ducts.  
   
   
       15 . The valve according to  claim 14 , characterized in that the apertures as per cross-sectional representation are shaped as a triangle turned upside down.  
   
   
       16 . Valve according to any one of the above claims, characterized in that the valve disk ( 1 ) simultaneously acts as valve guide ( 8 ) for the closure part ( 4 ,  5 ) with the guide ( 8 ) of the valve disk ( 1 ) being designed as a central tubular element into which a cylindrical sealing body ( 16 ) has been fitted the base of which being enlarged radially to form a sealing disk ( 17 ).