Three-way stopcock and flow rate control device in use thereof

Details Three-way stopcock and flow rate control device in use thereof Three-way stopcock and flow rate control device in use thereof

1997-04-03

1998-11-24

Fox, John

Fluid handling

Systems

Dividing into parallel flow paths with recombining

13762547, F16K 1108

Patent

active

058394702

ABSTRACT:
A three-way stopcock and a flow rate control device having a flow rate control unit for controlling the flow rate by flow resistances of flow rate control tubes. The three-way stopcock includes a plug portion in a cylindrical shape having a liquid path in a T-like shape, a cylindrical portion having two flow inlet ports and one flow outlet port, into which the plug portion can be inserted rotatably and in a liquid tight fit, and a switch lever capable of attachably and detachably engaging with the plug portion, wherein when the liquid path of the plug portion communicates with the flow outlet portion of the cylindrical portion by rotation of the plug portion by the switching lever, the liquid path of the plug portion communicates with at least one of the two flow inlet ports of the cylindrical portion.

REFERENCES:
patent: 3769975 (1973-11-01), Nimoy et al.
patent: 4314586 (1982-02-01), Folkman
patent: 4349022 (1982-09-01), Ishikawa
patent: 4644967 (1987-02-01), Wyatt et al.
patent: 4840613 (1989-06-01), Balbierz
patent: 5501674 (1996-03-01), Trombley, III et al.

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