This ceramic spur gear pump was designed to allow variants to support three environmental systems on the ISS: oxygen generation (OGA system), water delivery (WPDP system), and waste water processing (WWP system). The highly engineered solution provides the exceptional reliability and long operating life required of space-based equipment; service calls are problematic. Designed with common parts and processes these pumps featured:
This ECLSS NASA Fact sheet provides an overview of the system which is located on Node 3 of the ISS.
|Fluid||Deionized Water (OGA & WPDP), Grey Waste Water (WWP)|
|Pump Speed, Nominal (rpm)||2,500|
|Pressure Rise (psid)||30 (OGA & WPDP models), 110 (WWP model)|
|Flow (in3/minute)||330 (OGA & WPDP models), 20 (WWP model)|
|Vibration & Shock||Typical Spacecraft Launch Loads|