Microbial Check Valve for ShuttleThe Microbial Check Valve (MCV) is a device developed for the Space Shuttle that prevents the transfer of viable microorganisms within water systems. The device is essentially a bed of resin material, impregnated with iodine, that kills microorganisms on contact. It prevents the cross-contamination of microorganisms from a nonpotable system into the potable water system when these systems are interconnected. In this regard, the function of the device is similar to that of the 'air gap' found in conventional one-gravity systems. Basic design data are presented including pressure drop, scaling factors, sizing criteria, and the results of challenging the device with suspensions of seven microorganisms including aerobes, anaerobes and spore formers.
Document ID
19790028563
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Colombo, G. V. (Umpqua Research Co. Myrtle Creek, OR, United States)
Putnam, D. F. (Umpqua Research Co. Myrtle Creek, Ore., United States)
Sauer, R. L. (NASA Johnson Space Center Houston, Tex., United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1978
Subject Category
Man/System Technology And Life Support
Report/Patent Number
ASME PAPER 78-ENAS-27
Meeting Information
Meeting: American Society of Mechanical Engineers, Intersociety Conference on Environmental Systems