Apparatus and method for sealing a dispensing valve to a bag

Abstract

Disclosed herein is a dispensing valve and bag combination comprising, a valve body, a receptacle body and a seal. The valve body has an appendage extending therefrom and a sealing seat on the appendage. The receptacle body has a bore that is receptive of the appendage of the valve body. The receptacle body is sealable to the appendage when the seal is positioned at the sealing seat and the appendage is inserted into the bore. Further disclosed herein is a method of sealing a dispensing valve to a bag comprising, diametrically sealing a valve body to a receptacle body with a seal positioned between an appendage of the valve body and a bore of the receptacle body.

1 . A dispensing valve and bag combination, comprising: 
 a valve body;    an appendage extending from the valve body;    an appendage seal seat encircling the appendage and receptive of a seal;    a receptacle body having a bore receptive to the appendage of the valve body; and    a seal positioned at the appendage seal seat and sealable against the bore when the appendage is inserted in the bore.    
   
   
       2 . The dispensing valve and bag combination of  claim 1 , wherein: 
 the seal is an o-ring.    
   
   
       3 . The dispensing valve and bag combination of  claim 1 , wherein: 
 the seal is made with a low permeability material.    
   
   
       4 . The dispensing valve and bag combination of  claim 1 , wherein: 
 the seal is made of an elastomeric material.    
   
   
       5 . The dispensing valve and bag combination of  claim 1 , wherein: 
 the valve body is injection molded with a low permeability resin.    
   
   
       6 . The dispensing valve and bag combination of  claim 1 , further comprising: 
 a bag wherein the receptacle body is heat sealed thereto.    
   
   
       7 . The dispensing valve and bag combination of  claim 1 , further comprising: 
 a circumferential notch in the valve body at a radial location substantially equal to an outer circumferential surface of the receptacle body; and    a tolerance take up device disposed at the notch between the valve body and the receptacle body.    
   
   
       8 . The dispensing valve and bag combination of  claim 7 , wherein: 
 the tolerance take up device has a rectangular cross section.    
   
   
       9 . The dispensing valve and bag combination of  claim 7 , wherein: 
 the tolerance take up device is made with a low permeability material.    
   
   
       10 . The dispensing valve and bag combination of  claim 7 , wherein: 
 the tolerance take up device is made of an elastomeric material.    
   
   
       11 . The dispensing valve and bag combination of  claim 1 , further comprising: 
 a groove annularly encircling the appendage wherein the seal seat is disposed within the groove.    
   
   
       12 . The dispensing valve and bag combination of  claim 1 , further comprising: 
 a seal recess within the bore of the receptacle body.    
   
   
       13 . The dispensing valve and bag combination of  claim 1 , further comprising: 
 a barb disposed at the appendage spaced from the valve body and engagable with the bore of the receptacle body.    
   
   
       14 . A method of sealing a dispensing valve to a bag, comprising: 
 diametrically sealing a valve body to a receptacle body with a seal positioned between an appendage of the valve body and a bore of the receptacle body.    
   
   
       15 . The method of  claim 14 , further comprising: 
 occluding propellant from permeating through the receptacle body with a tolerance take up device disposed against a surface of the receptacle body in a notch of the valve body.    
   
   
       16 . The method of  claim 15 , further comprising: 
 biasing the tolerance take up device against the receptacle body with a pressure gradient that exists from the outside of the bag toward the inside of the bag.    
   
   
       17 . The method of  claim 14 , further comprising: 
 retaining the receptacle body to the valve body with a barb on the appendage of the valve body that has a greater radial extension than the through bore of the receptacle body.