Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1990-12-21
1992-03-17
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137597, F16K 717
Patent
active
050959387
ABSTRACT:
An injector for a fluid delivery system is provided to deliver precise volumes of a plurality of fluids in sequence to a treatment reservoir. The injector is in fluid communication with a positive displacement pump which accepts fluid from a fluid source. The injector includes a spring loaded plunger, an end of which contacts a diaphragm adapted to seal an injector inlet from an injector outlet. The end of the plunger is shaped to seat the diaphragm against the injector outlet and to position the diaphragm away from the injector inlet.
REFERENCES:
patent: 3642026 (1972-02-01), Sielaff
patent: 4555719 (1985-11-01), Arway et al.
patent: 4660598 (1987-04-01), Butterfield et al.
patent: 4718467 (1988-01-01), DiGianfilippo et al.
patent: 4768547 (1988-09-01), Danby et al.
Cook Paul J.
Hepperle Stephen M.
Karnakis Andrew T.
Millipore Corporation
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