Flexible hose handles high rates of flow under high pressures. Short lengths of tubing are overlapped to permit flexibility with much greater parallel offset

Higley, D. F.

English

NASA Technical Reports Server

ii
August 1969	 Brief 69-10288 
NASA TECH BRIEF 
rrsr	 -- ---	 ------__ 
NASA Tech Briefs are issued to summarize specific innovations derived from the U.S. space program, 
to encourage their commercial application. Copies are available to the public at 15 cents each 
from the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
TFE-Fluorcarbon Liners for Flexible Hoses 
Ring	 Braid 
Metal Bellows	 End Fitting 
Flexible Hose Liner 
The problem:	 The solution: 
Design of a flexible hose, for handling high rates 	 A superior flexible liner is made from short 
of flow under high pressures, that permits greater 	 lengths of TFE-fluorocarbon tubing. The outside 
parallel offset than 0.10. Under greater offset, avail- 	 diameter of one end of each length is reduced so 
able hoses, commonly lined with metallic. one-piece or 	 that it becomes a male end; increase in the internal 
two-piece liners, allow the flow to impinge on the sur- 	 diameter of the other end makes it female. Thus the 
rounding metallic bellows, with consequent failure of joints between the lengths are sliding overlaps that 
the hose.	 permit flexibility with much greater parallel offset. 
(continued overleaf) 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19690000287 2020-03-16T18:11:52+00:00Z
The liners are surrounded by the usual metallic bel-
lows covered with braid. Oil companies and manu-
facturers of hoses may be interested. 
Note: 
No further documentation is available. Inquiries 
may be directed to: 
Technology Utilization Officer 
Marshall Space Flight Center 
Huntsville, Alabama 35812 
Reference: B69-10288
Patent status: 
No patent action is contemplated by NASA. 
Source: D. F. Higley of

North American Rockwell Corporation

under contract to
Marshall Space Flight Center 
(MFS-1 6480)
. 
Brief 69-10288	 Category 05


TFE-fluorocarbon liners for flexible hoses

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