Pressure relief valve

摘要

Described herein is an improved externally mounted pressure relief valve that is especially adapted for rail tank cars or other large closed containers that contain or transport fluids, including liquids and gases. The pressure relief valve comprises a plurality of spring assemblies, and each spring assembly contains a pre-determined number of spring leaves. Each spring assembly is coiled upon a corresponding spring drum, and each spring drum is penetrated by a corresponding spring drum bolt. The spring assemblies are preferably aligned in at least two horizontal planes that are parallel to each other and normal to the vertical length of a spring block. The spring block and sealing disk are mounted vertically over the valve seat and within the confines of vertically extending spring brackets.

主权项

1. An integral single component spring bracket, said spring bracket comprising a first single lateral side, a second single lateral side, an upper spring bracket edge, a lower spring bracket edge, a single flat anterior side and a single flat posterior side,
said single flat anterior side and said single flat posterior side congruently aligning with each other and being integral with each other, said spring bracket further comprising six vertically aligned spring bracket apertures penetrating said single flat anterior side and said single flat posterior side, and wherein two of said six spring bracket apertures penetrating said single flat anterior side and said single flat posterior side are threaded, said spring bracket further comprising an additional two said spring bracket apertures within and as part of said upper spring bracket edge, said spring bracket further comprising a single rigid vertical structure within and as part of said single flat posterior side, said single rigid vertical structure comprising rigid walls, said single rigid vertical structure mechanically retaining another device within said rigid walls so said another device exclusively moves vertically in a linear manner.