A bypass valve , comprising: a housing defining a chamber , the housing including an inlet and an outlet in a sidewall of the housing , both in communication with the chamber , the chamber including a distal end opposite the inlet , a shoulder proximate the distal end , a length extending from the distal end to the inlet , and a width transverse to the length; a poppet configured to fit within and translate along at least a portion of the length of the chamber , the poppet including a first end configured to be oriented toward the inlet , a second end opposite the first end , and a partition configured to extend across the width of the chamber , the poppet further including a sidewall extending from the partition to the first end , the sidewall including an opening therethrough, the partition being configured to contact a fluid; and a spring configured to fit within the chamber and to bias the poppet towards a first position wherein the poppet prevents communication between the inlet and the outlet when the fluid in contact with the partition has a pressure less than or equal to a limit, the spring being further configured to compress, thereby allowing the poppet to translate to a second position wherein the opening in the sidewall of the poppet aligns with the outlet in the sidewall of the housing when the pressure of the fluid in contact with the partition is greater than the limit, thereby placing the inlet and the outlet in communication and allowing the fluid to pass therethrough; wherein failure of the spring would permit the poppet to translate to a third position wherein the second end of the poppet contacts the shoulder and the sidewall of the poppet prevents communication between the inlet and the outlet , and characterized in that the bypass valve is configured to prevent the poppet from translating to the third position due to excessive pressure of the fluid. a housing defining a chamber , the housing including an inlet and an outlet in a sidewall of the housing , both in communication with the chamber , the chamber including a distal end opposite the inlet , a shoulder proximate the distal end , a length extending from the distal end to the inlet , and a width transverse to the length; a poppet configured to fit within and translate along at least a portion of the length of the chamber , the poppet including a first end configured to be oriented toward the inlet , a second end opposite the first end , and a partition configured to extend across the width of the chamber , the poppet further including a sidewall extending from the partition to the first end , the sidewall including an opening therethrough, the partition being configured to contact a fluid; and a spring configured to fit within the chamber and to bias the poppet towards a first position wherein the poppet prevents communication between the inlet and the outlet when the fluid in contact with the partition has a pressure less than or equal to a limit, the spring being further configured to compress, thereby allowing the poppet to translate to a second position wherein the opening in the sidewall of the poppet aligns with the outlet in the sidewall of the housing when the pressure of the fluid in contact with the partition is greater than the limit, thereby placing the inlet and the outlet in communication and allowing the fluid to pass therethrough; wherein failure of the spring would permit the poppet to translate to a third position wherein the second end of the poppet contacts the shoulder and the sidewall of the poppet prevents communication between the inlet and the outlet , and characterized in that the bypass valve is configured to prevent the poppet from translating to the third position due to excessive pressure of the fluid. <EOS>