Butterfly valve

A valve having improved inherent flow characteristics and improved dynamic torque characteristics is provided. The valve includes a disk for controlling fluid flow inside the valve. The disk has at least a sealing surface for sealing with a valve seal when the disk is in a closed position. The seali...

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Hauptverfasser:	BAUMANN HANS D, RALSTON DONALD G, DEPENNING CHARLES L
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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creator	BAUMANN HANS D RALSTON DONALD G DEPENNING CHARLES L
description	A valve having improved inherent flow characteristics and improved dynamic torque characteristics is provided. The valve includes a disk for controlling fluid flow inside the valve. The disk has at least a sealing surface for sealing with a valve seal when the disk is in a closed position. The sealing surface includes a contour and creates a flow clearance with the valve seal as the disk pivots from a closed position toward an open position. A radius of curvature of the contour defines a size of the flow clearance at predetermined disk positions to characterize flow through the valve. The valve can further include an upstream indentation for dynamic torque reduction and/or an indentation for dynamic torque reduction in case of a fluid flow reversal.
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The disk has at least a sealing surface for sealing with a valve seal when the disk is in a closed position. The sealing surface includes a contour and creates a flow clearance with the valve seal as the disk pivots from a closed position toward an open position. A radius of curvature of the contour defines a size of the flow clearance at predetermined disk positions to characterize flow through the valve. The valve can further include an upstream indentation for dynamic torque reduction and/or an indentation for dynamic torque reduction in case of a fluid flow reversal.</description><edition>7</edition><language>eng</language><subject>ACTUATING-FLOATS ; BLASTING ; COCKS ; DEVICES FOR VENTING OR AERATING ; ENGINEERING ELEMENTS AND UNITS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; TAPS ; THERMAL INSULATION IN GENERAL ; VALVES ; WEAPONS</subject><creationdate>2004</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040921&DB=EPODOC&CC=US&NR=6793197B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040921&DB=EPODOC&CC=US&NR=6793197B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BAUMANN HANS D</creatorcontrib><creatorcontrib>RALSTON DONALD G</creatorcontrib><creatorcontrib>DEPENNING CHARLES L</creatorcontrib><title>Butterfly valve</title><description>A valve having improved inherent flow characteristics and improved dynamic torque characteristics is provided. 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The valve can further include an upstream indentation for dynamic torque reduction and/or an indentation for dynamic torque reduction in case of a fluid flow reversal.</description><subject>ACTUATING-FLOATS</subject><subject>BLASTING</subject><subject>COCKS</subject><subject>DEVICES FOR VENTING OR AERATING</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>TAPS</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>VALVES</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2004</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOB3Ki0pSS1Ky6lUKEvMKUvlYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxocFm5pbGhpbmTkbGRCgBAFqmHts</recordid><startdate>20040921</startdate><enddate>20040921</enddate><creator>BAUMANN HANS D</creator><creator>RALSTON DONALD G</creator><creator>DEPENNING CHARLES L</creator><scope>EVB</scope></search><sort><creationdate>20040921</creationdate><title>Butterfly valve</title><author>BAUMANN HANS D ; RALSTON DONALD G ; DEPENNING CHARLES L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US6793197B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2004</creationdate><topic>ACTUATING-FLOATS</topic><topic>BLASTING</topic><topic>COCKS</topic><topic>DEVICES FOR VENTING OR AERATING</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>TAPS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>VALVES</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>BAUMANN HANS D</creatorcontrib><creatorcontrib>RALSTON DONALD G</creatorcontrib><creatorcontrib>DEPENNING CHARLES L</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BAUMANN HANS D</au><au>RALSTON DONALD G</au><au>DEPENNING CHARLES L</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Butterfly valve</title><date>2004-09-21</date><risdate>2004</risdate><abstract>A valve having improved inherent flow characteristics and improved dynamic torque characteristics is provided. The valve includes a disk for controlling fluid flow inside the valve. The disk has at least a sealing surface for sealing with a valve seal when the disk is in a closed position. The sealing surface includes a contour and creates a flow clearance with the valve seal as the disk pivots from a closed position toward an open position. A radius of curvature of the contour defines a size of the flow clearance at predetermined disk positions to characterize flow through the valve. The valve can further include an upstream indentation for dynamic torque reduction and/or an indentation for dynamic torque reduction in case of a fluid flow reversal.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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subjects	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
title	Butterfly valve
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