Inside the Space Station Processing Facility high bay at NASA's Kennedy Space Center in Florida, technicians work on the pump package assembly (PPA) on Aug. 30, 2018. The payload will be carried to the International Space Station on SpaceX's 16th Commercial Resupply Services mission. The PPA will be used to continuously drive the cooling water in the space station's thermal control system. The assembly includes a centrifuge pump, a fine filter and gas trap for pump protection, a coarse outlet filter, sensors, and an accumulator. The PPA also will provide a reservoir used for makeup of coolant if leakage occurred. CRS-16 is scheduled to launch to the space station later this year.

Inside the Space Station Processing Facility high bay at NASA's Kennedy Space Center in Florida, a technician works on the pump package assembly (PPA) on Aug. 30, 2018. The payload will be carried to the International Space Station on SpaceX's 16th Commercial Resupply Services mission. The PPA will be used to continuously drive the cooling water in the space station's thermal control system. The assembly includes a centrifuge pump, a fine filter and gas trap for pump protection, a coarse outlet filter, sensors, and an accumulator. The PPA also will provide a reservoir used for makeup of coolant if leakage occurred. CRS-16 is scheduled to launch to the space station later this year.

Inside the Space Station Processing Facility high bay at NASA's Kennedy Space Center in Florida, technicians work on the pump package assembly (PPA) on Aug. 30, 2018. The payload will be carried to the International Space Station on SpaceX's 16th Commercial Resupply Services mission. The PPA will be used to continuously drive the cooling water in the space station's thermal control system. The assembly includes a centrifuge pump, a fine filter and gas trap for pump protection, a coarse outlet filter, sensors, and an accumulator. The PPA also will provide a reservoir used for makeup of coolant if leakage occurred. CRS-16 is scheduled to launch to the space station later this year.

Inside the Space Station Processing Facility high bay at NASA's Kennedy Space Center in Florida, technicians work on the pump package assembly (PPA) on Aug. 30, 2018. The payload will be carried to the International Space Station on SpaceX's 16th Commercial Resupply Services mission. The PPA will be used to continuously drive the cooling water in the space station's thermal control system. The assembly includes a centrifuge pump, a fine filter and gas trap for pump protection, a coarse outlet filter, sensors, and an accumulator. The PPA also will provide a reservoir used for makeup of coolant if leakage occurred. CRS-16 is scheduled to launch to the space station later this year.

Inside the Space Station Processing Facility high bay at NASA's Kennedy Space Center in Florida, technicians work on the pump package assembly (PPA) on Aug. 30, 2018. The payload will be carried to the International Space Station on SpaceX's 16th Commercial Resupply Services mission. The PPA will be used to continuously drive the cooling water in the space station's thermal control system. The assembly includes a centrifuge pump, a fine filter and gas trap for pump protection, a coarse outlet filter, sensors, and an accumulator. The PPA also will provide a reservoir used for makeup of coolant if leakage occurred. CRS-16 is scheduled to launch to the space station later this year.

iss059e061760 (May 15, 2019) --- NASA astronaut Nick Hague of Expedition 59 installs gas trap plugs inside the Harmony module's Moderate Temperature Loop Pump Package Assembly. The gas trap plugs would slow an ammonia release through the gas trap vent hole in the event of an Interface Heat Exchanger breach and reduce coolant leakage during vacuum conditions at the International Space Station.