Plastic and fibreglass flange for surge tanks

Abstract

The present patent relates to the sector of surge tanks for pumps and boilers, and particularly concerns a new flange made of plastic and fibreglass for assembling on surge tanks The flange has a dome-like geometrical shape, that is concave on the underside, designed to reinforce it and to reduce the amount of material needed to make it. Said flange is distinctive in that it is shaped so as to ensure perfect geometrical compatibility with the surge tank on which it is assembled and the tightness of the butyl (or other material) seal.

1 . A flange for assembling on surge tanks in water, heating and sanitary systems, characterised in that it is made of a thermoformed material consisting of polypropylene and fibreglass. 
     
     
         2 . A flange according to  claim 1 , characterised in that it comprises a circular crown on its underside, with suitable holes for containing fixing screws. 
     
     
         3 . A flange according to  claims 1  and  2 , characterised in that it can comprise an upper portion with a dome-shaped upper surface and a concave lower surface. 
     
     
         4 . A flange according to  claims 1 ,  2 , characterised in that it can comprise an upper portion with a circular body with upper reinforcement cross walls. 
     
     
         5 . A flange according to  claims 1 ,  2 ,  3  and  4 , characterised in that, in the upper portion, it comprises a threaded connection thermoformed therewith, suitable for ensuring the flange's connection to the hydraulic system. 
     
     
         6 . A flange according to  claims 1 ,  2 ,  3 ,  4  and  5 , characterised in that said material consists of the polypropylene Tecnoprene. 
     
     
         7 . A flange according to  claims 1 ,  2 ,  3 ,  4 ,  5  and  6 , characterised in that said thermoformed material contains fibreglass. 
     
     
         8 . A flange according to  claims 1 ,  2 ,  3 ,  4  and  5 , characterised in that it comprises fixing holes and seats that are wider than the holes for the corresponding screws, in order to provide sufficient space for the fixing tools. 
     
     
         9 . A flange according to any or any combination of the previous claims, characterised in that it comprises all the above-described characteristics, as shown and claimed in the present patent.