Metering valve assembly

Fluid handling – Systems – Multi-way valve unit

Reexamination Certificate

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Details

C251S267000

Reexamination Certificate

active

06953056

ABSTRACT:
A metering valve assembly is provided with a valve stem having one or more tapered channels formed therein for selective engagement with a valve seat to provide incremental regulation of fluid flow through a valve housing. An adjustment knob provides one manner of reciprocal movement of the valve stem within the valve housing. Alternatively, the valve stem can be directly engaged for rotational reciprocal movement within the valve housing. Different embodiments of the valve stem are provided for alternate fluid flow regulation requirements. The metering valve assembly is comprised of a limited number of component parts for ease of manufacture as well as the replacement and exchange of component parts in the field.

REFERENCES:
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patent: 4157808 (1979-06-01), Eidsmore
patent: 4230300 (1980-10-01), Wiltse
patent: 6299134 (2001-10-01), Laaja

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