Flow restrictor for water purification systems

Details Flow restrictor for water purification systems Flow restrictor for water purification systems

1990-10-15

1992-06-09

Bryant, III, James E.

Pipes and tubular conduits

With flow regulators and/or baffles

Restrictors

138 40, 138109, 138137, F15D 102

Patent

active

051198606

ABSTRACT:
A flow restrictor that is intended primarily for use in a reverse osmosis water purification system of the type having a reverse osmosis membrane housing receiving feed water to be purified and generating purified water at a first outlet and waste water at a second outlet. The flow restrictor of the invention comprises a selected length of elongated, doubly-extruded tubing having an inner, low-friction tube and an outer, higher-friction tube. The outer tube is coaxial with the inner tube and has an inner surface which is substantially contiguous with the outer surface of the inner tube. The diameter of the inner tube and the length of the tubing are selected for precisely limiting flow of water therethrough.

REFERENCES:
patent: 1895022 (1933-01-01), Chandler
patent: 3109461 (1963-11-01), Wolff et al.
patent: 3734139 (1973-05-01), Zafiroglu
patent: 3828112 (1974-08-01), Johansen et al.
patent: 4636346 (1987-01-01), Gold et al.
patent: 4800109 (1989-01-01), Washizu

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