3620241 is referenced by 42 patents and cites 2 patents.

In a water purification system wherein a supply of pressurized, potable, product water is to be dispensed as required, and a small volume flow of nonpressurized byproduct waste water is to be discharged to a potentially contaminated drain, a combination plumbing fixture comprises a body with a valve-controlled passage therethrough for dispensing the potable water. A pair of axially upright ducts are provided through a faucet body, the lower end of one of the ducts being connected to receive the flow of waste byproduct water, and the lower end of the other duct being connected to the drain. A recess in the body encompasses the upper ends of both ducts, and a gooseneck tube is fitted into the upper end of said one duct and discharges the waste water in a free fall into the other duct. A vent opening in the other duct provides an antisiphon airgap.

Title
Combination plumbing fixture for water purification system having waste bypass flow
Application Number
05/060,409
Publication Number
3620241
Application Date
August 3, 1970
Publication Date
November 16, 1971
Inventor
Ross M Brown
Agent
Thomas D Lane
Assignee
Desalination Systems Escondido CA
IPC
E03c 01/10
E03C 01/10
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