T-21564 Pressure Plug for Olson Transport Vent Assembly

T-21564 Pressure Plug helps to prevent pressure build up in the system caused by heat. As an essential part of the Olson Transport Vent Assembly, the pressure plug allows air to pass in and out of the device to help balance pressure inside and outside of tank. The pressure plug has an unique chess-piece design that assists in superior venting capabilities that allows pressure to be released and maintained at a certain level of vacuum.