Pressure relief valve (PRV) assembly including end-to-end coupled PRV stages and related methods

A pressure relief valve (PRV) assembly comprising:

• a plurality of PRV stages coupled in end-to-end relation, each PRV stage comprising
• a PRV body having a cavity therein to receive an adjacent PRV body therein and a fluid passageway fluidly coupled to the cavity, the PRV body having an enlarged size body section having the cavity therein, and a reduced size body section to be coupled within a cavity of an adjacent PRV body,
• a PRV valve carried within the cavity and extending within the fluid passageway and comprising a head configured to define a seal between the cavity and the fluid passageway, and a shaft extending outwardly from the head within the fluid passageway,
• a first biasing member carried within the cavity to bias the PRV valve,
• a biasing member stop coupled to the PRV valve within the fluid passageway, and
• a second biasing member held within the fluid passageway by the biasing member stop and biasing the PRV valve;
• and
• an end cap coupled to a last PRV stage of the plurality of PRV stages to hold the first biasing member within the cavity.

A method of making a pressure relief valve (PRV) assembly comprising:

• coupling a plurality of PRV stages in end-to-end relation, each PRV stage comprising
• a PRV body having a cavity therein to receive an adjacent PRV body therein and a fluid passageway fluidly coupled to the cavity,
• a PRV valve carried within the cavity and extending within the fluid passageway,
• a first biasing member carried within the cavity to bias the PRV valve,
• a biasing member stop coupled to the PRV valve within the fluid passageway, and
• a second biasing member held within the fluid passageway by the biasing member stop and biasing the PRV valve;
• and
• coupling an end cap to a last PRV stage of the plurality of PRV stages to hold the first biasing member within the cavity.

A method of making a pressure relief valve (PRV) assembly comprising:

• forming each of a plurality of PRV stages by at least
• forming a PRV body having a cavity therein to receive an adjacent PRV body therein and a fluid passageway fluidly coupled to the cavity,
• positioning a PRV valve carried within the cavity and extending within the fluid passageway,
• positioning a first biasing member carried within the cavity to bias the PRV valve,
• coupling a biasing member stop to the PRV valve within the fluid passageway, and
• positioning a second biasing member within the fluid passageway and to be held by the biasing member stop to bias the PRV valve;
• coupling the plurality of PRV stages in end-to-end relation;
• and
• coupling an end cap to a last PRV stage of the plurality of PRV stages to hold the first biasing member within the cavity.