Patent ID: 8047226

Claim:
A pressure relief valve comprising: a lever plate having a first side, a second side, and an opening extending therebetween; a first spring positioned on the first side of the lever plate and having a first end, the first spring adapted to supply a first force against the lever plate in a first direction; a fitting having a first side, a second side, and a flange extending from the second side of the fitting, the fitting including a surface with which the first end of the first spring contacts, and the flange including a rounded end; a guide assembly having a first side, a second side, a first concavity, and a second concavity, at least a portion of the guide assembly extending through the opening of the lever plate, the first concavity formed on the first side of the guide assembly and contacting the rounded end of the flange of the fitting, and the second concavity aligned coaxially with the first concavity; a diaphragm assembly including a rod having a rounded end, the rounded end of the rod disposed in contact with the second concavity of the guide assembly; and a second spring adapted to supply a second force against the diaphragm assembly to move the lever plate in a second direction that is substantially opposite the first direction.