Adjustable recirculating valve
AssigneeTyco Valves & Controls LP
InventorsMichael D. McNeely, Howell A. Smith
Life of this patent
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Abstract
An adjustable automatic recirculation valve includes a valve body, a main valve disk, a bypass valve and a dynamic adjustment assembly. The main valve disk is positioned within the valve body and opens in response to fluid flow between a main inlet and a main outlet. The bypass valve controls the flow of fluid between the main inlet and the recirculating outlet. A dynamic adjustment assembly, housed within the valve body controls the operating lift associated with the maximum opening of the bypass valve to regulate fluid flow capacity to the recirculating outlet.
Claims12
An adjustable automatic recirculation valve comprising:
- a valve body defining a main valve cavity and a recirculating outlet, said main valve cavity having a main inlet and a main outlet;
- a main valve disk positioned within said main valve cavity sensing flow of fluid between said main inlet and said main outlet;
- a bypass valve responsive to opening and closing of said main valve disk for controlling the flow of fluid between said main inlet and said recirculating outlet;
- and
- a dynamic adjustment assembly housed within said valve body configured to control the distance D associated with the opening of said bypass valve to regulate the flow of fluid to said recirculating outlet, said dynamic adjustment assembly including:
- an operator shaft having a first end and a second end, said first end located near an outer surface of said valve body;
- a pivot arm having a first end connected to said second end of said operator shaft and
- a pivot lever connected to a second end of said pivot arm, said pivot lever capable of angular rotation toward said main inlet and outlet of said main valve cavity.
Dependencies are inferred from the claim text.