INTERNAL RELIEF VALVE APPARATUS FOR USE WITH LOADING REGULATORS

摘要

An internal relief valve apparatus for use with loading regulators, comprising a relief valve seat having a cylindrical body and a first flange portion, wherein the first flange portion includes a seating surface to engage a first side of a diaphragm when the relief valve apparatus is in a closed position and is to move away from the first side of the diaphragm when the loading regulator is in a bleed condition; a biasing member disposed between a second flange portion of the relief valve seat and a portion of the loading regulator, wherein the biasing member is to bias the first side of the diaphragm toward the seating surface; and a travel stop disposed within at least a portion of the loading regulator to engage the relief valve seat, wherein engagement of the travel stop and the relief valve seat causes the seating surface to move away from the first side of the diaphragm when the diaphragm moves toward the travel stop.