Valve block assembly

Details Valve block assembly Valve block assembly

1993-12-22

1994-11-15

Hepperle, Stephen M.

Valves and valve actuation

Electrically actuated valve

Including solenoid

251331, 251334, F16K 3110

Patent

active

053640683

ABSTRACT:
A valve block assembly with internal delivery channels and a common outlet channel is provided. Access of reactants to the delivery channels is controlled by diaphragm valves, preferably equipped with relief grooves to accommodate deformation of the diaphragm. Reservoirs feeding the delivery channels have an inert atmosphere controlled by pressurizing and venting channels in the valve block. Exposure of plastic tubing to oxygen is kept to a minimum. The assembly is particularly adapted for use in a DNA or protein sequencer to supply reactants without cross-contamination or oxidative decomposition.

REFERENCES:
patent: 2619986 (1952-12-01), Geopfrich
patent: 3740019 (1973-06-01), Kessell et al.
patent: 4558845 (1985-12-01), Hunkapiller
patent: 4597412 (1986-07-01), Stark
patent: 4944487 (1990-07-01), Holtermann
patent: 5112027 (1992-05-01), Hanyu et al.

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