Pressure compensated flow rate controller with BTU meter

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United States of America Patent

PATENT NO 8805591
APP PUB NO 20120185102A1
SERIAL NO

13352229

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Importance

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Abstract

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A constant-flow control valve and BTU meter assembly that has a pressure independent, constant-flow control valve assembly connectable to the fluid-based heating or cooling system. A valve stem is connected to a valve member and is rotatable as a unit relative to a valve body to change the position of valve member to change a fluid flow rate through the valve. The valve member's position relative to the fluid path is directly related to the fluid flow rate. A BTU meter assembly is connected to the valve stem, which is rotatable relative to the BTU meter assembly. A position sensor of the BTU meter assembly detects a rotational position of the valve stem relative to the BTU body. A controller of the BTU meter assembly determines the fluid flow rate based upon the pressure drop across the valve assembly and the rotational position of the valve stem.

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Patent Owner(s)

Patent OwnerAddress
FLOW CONTROL INDUSTRIES INCWOODINVILLE WA 98072

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kirchner, Mark W Seattle, US 15 109
Robson, Chris Woodinville, US 16 99
Skoglund, Paul K Medina, US 14 223
Smith, Art Woodinville, US 5 26
Trueblood, Ben Woodinville, US 4 43

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