Abstract: A pressure bleed-off system. The system includes a fluid bypass line having an inlet and an opposing outlet, wherein the inlet is in fluid communication with a high pressure frac line for a hydraulic fracturing operation. The system also includes a high-pressure transducer located proximate the fluid inlet, a first plug valve residing along the fluid bypass line, and a first electric actuator residing on the first plug valve. The actuator is configured to rotate the first plug valve between close and open positions in response to command signals from a controller. The controller, in turn, sends the command signals in response to control signals delivered by an operator, remotely. Preferably, the command signals are wireless signals sent from outside of the red zone. The system may also include a second plug valve along the bypass line.

Abstract: An animal gambrel apparatus having a three piece telescoping spreader bar. The center section of the spreader bar has a telescoping section engaged in each end of the center section, and each end of the center section has an internally mounted retention member that cooperates with an externally mounted stop member on the proximal end of each telescoping section to prevent the telescoping sections from being dislodged from the center section. A locking mechanism is attached to the proximal end of one of the telescoping sections to bias and selectively lock and maintain the sections of the spreader bar in an extended condition. The extended condition is released by turning the spreader bar upside down to disengage the locking mechanism.