These Manual Relief Valves and Filler Valves are designed for use in small containers or cases, where automatic breather valves are not required. They provide various methods of manually equalizing pressure or vacuum differentials before opening the containers. Each type of valve is easily installed through a single hole in the wall of the case and comes complete with all attaching hardware. Some valves have safety wire protection features to prevent unauthorized opening of the valves. Recommended torque value for installation of all Manual Relief Valves is 30 in. - lbs. (34 N•m).
NOTE: Because it is visually impossible to tell whether the TA321 and TA327 Manual Relief Valves are open or closed, careful consideration should be taken of the potential consequences (continual exposure to outside atmosphere if left open; potential damage to container if left closed) before selecting these valves.