Abstract: A pressure relief valve may include a housing and a seat portion in flow communication with an inlet passage. The pressure relief valve may also include a relief body configured to abut the seat portion and provide a fluid seal between the inlet passage and an outlet passage, and a keeper abutting the relief body. The pressure relief valve may also include an intermediate sleeve coupled to the housing and at least one waveform spring configured to abut the keeper and resist movement of the relief body and the keeper away from the seat portion, such that the relief body prevents flow communication between the inlet passage and the outlet passage. The pressure relief valve may further include an end cap including a shoulder abutting the end surface of the intermediate sleeve and a reaction surface against which an end of the at least one waveform spring abuts.