Compact inline over-pressurization protection device

A device for shutting off fluid-flow in a pipe;

• the device comprising:
• a moveable sealing member inside a pipeline;
• a housing enclosing the sealing member, the housing including a passage configured to be positioned inline with the pipeline;
• a longitudinal spring configured to bias against the sealing member in a first direction, wherein the sealing member extends into a seal seat to close off the pipeline upon an overpressure within the pipeline;
• a lateral spring at an angle to the longitudinal spring wherein the lateral spring is configured to bias against the sealing member in a second direction;
• and
• a lever to retract and reset the sealing member, wherein the lever extends outside of the housing, and comprises a shaft extending through the sealing element.

A device for shutting off fluid-flow in a pipe;

• the device comprising:
• a moveable sealing member inside a pipeline;
• a longitudinal spring configured to bias against the sealing member in a first direction;
• a lateral spring at an angle to the longitudinal spring wherein the lateral spring is configured to bias against the sealing member in a second direction;
• and
• a removable cartridge including the sealing member, the longitudinal spring, and the lateral spring, wherein the removable cartridge is removable and replaceable within a housing.

A device for shutting off fluid-flow in a pipe;

• the device comprising:
• a housing with a passage configured to be positioned inline with a pipeline, the passage including a sealing seat;
• a sealing member inside the housing;
• a longitudinal spring biased against the sealing member toward the sealing seat;
• a locking element biased against a surface of the sealing member to maintain an open position with the sealing member off of the sealing seat, wherein the locking element is configured to move off the surface of from the sealing member upon a fluid overpressure in the passage, whereby the sealing member extends into the seal seat to close off the pipeline upon the overpressure.

A device for shutting off fluid-flow in a pipe;

• the device comprising:
• a housing with a passage configured to be positioned inline with a pipeline, the passage including a sealing seat, the housing further including a locking element passage;
• a sealing member inside the housing;
• a longitudinal spring biased against the sealing member toward the sealing seat;
• and
• a locking element biased against the sealing member to maintain an open position with the sealing member off of the sealing seat, wherein the locking element is configured to move from the sealing member upon a fluid overpressure in the passage, and the fluid overpressure within the passage pushes the lock element into the locking element passage and off the sealing member, whereby the sealing member extends into the seal seat to close off the pipeline upon the overpressure.