Re-energizable valve and valve seats
Disclosed is a type of valve of the sort that controls the flow of fluid and that contain a plug and at least one seat against which the plug presses to close the valve. The novel valve has floating seats, which can seal downstream, and only when desired, can also be re-energized to seal upstream. T...
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| creator | WITT, ROBERT L BATES, ROY C UNGCHUSRI, TEP |
| description | Disclosed is a type of valve of the sort that controls the flow of fluid and that contain a plug and at least one seat against which the plug presses to close the valve. The novel valve has floating seats, which can seal downstream, and only when desired, can also be re-energized to seal upstream. The upstream sealing capability of the invention provides a backup against downstream leaks, such as from low-pressure flows or parts failures such as due to wear or breakage. The valve can seal upstream through the use of hydraulic fluid, which is injected at high pressure into a sealed cavity behind the upstream seat, thereby forcing the seat against the plug. A novel seat seal design permits sealing against the fluid flow as well as isolation of the hydraulic injection ports from the fluid flow, during all operating states of the valve. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP0587006A1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP0587006A1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP0587006A13</originalsourceid><addsrcrecordid>eNrjZFAJStVNzUstSs-sSkzKSVUoS8wpS1VIzEuBsopTE0uKeRhY0xJzilN5oTQ3g4Kba4izh25qQX58anFBYjLQiJJ41wADUwtzAwMzR0NjIpQAAKreJiI</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Re-energizable valve and valve seats</title><source>esp@cenet</source><creator>WITT, ROBERT L ; BATES, ROY C ; UNGCHUSRI, TEP</creator><creatorcontrib>WITT, ROBERT L ; BATES, ROY C ; UNGCHUSRI, TEP</creatorcontrib><description>Disclosed is a type of valve of the sort that controls the flow of fluid and that contain a plug and at least one seat against which the plug presses to close the valve. The novel valve has floating seats, which can seal downstream, and only when desired, can also be re-energized to seal upstream. The upstream sealing capability of the invention provides a backup against downstream leaks, such as from low-pressure flows or parts failures such as due to wear or breakage. The valve can seal upstream through the use of hydraulic fluid, which is injected at high pressure into a sealed cavity behind the upstream seat, thereby forcing the seat against the plug. A novel seat seal design permits sealing against the fluid flow as well as isolation of the hydraulic injection ports from the fluid flow, during all operating states of the valve.</description><edition>5</edition><language>eng ; fre ; ger</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>1994</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=19940316&DB=EPODOC&CC=EP&NR=0587006A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19940316&DB=EPODOC&CC=EP&NR=0587006A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WITT, ROBERT L</creatorcontrib><creatorcontrib>BATES, ROY C</creatorcontrib><creatorcontrib>UNGCHUSRI, TEP</creatorcontrib><title>Re-energizable valve and valve seats</title><description>Disclosed is a type of valve of the sort that controls the flow of fluid and that contain a plug and at least one seat against which the plug presses to close the valve. The novel valve has floating seats, which can seal downstream, and only when desired, can also be re-energized to seal upstream. The upstream sealing capability of the invention provides a backup against downstream leaks, such as from low-pressure flows or parts failures such as due to wear or breakage. The valve can seal upstream through the use of hydraulic fluid, which is injected at high pressure into a sealed cavity behind the upstream seat, thereby forcing the seat against the plug. A novel seat seal design permits sealing against the fluid flow as well as isolation of the hydraulic injection ports from the fluid flow, during all operating states of the valve.</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>1994</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAJStVNzUstSs-sSkzKSVUoS8wpS1VIzEuBsopTE0uKeRhY0xJzilN5oTQ3g4Kba4izh25qQX58anFBYjLQiJJ41wADUwtzAwMzR0NjIpQAAKreJiI</recordid><startdate>19940316</startdate><enddate>19940316</enddate><creator>WITT, ROBERT L</creator><creator>BATES, ROY C</creator><creator>UNGCHUSRI, TEP</creator><scope>EVB</scope></search><sort><creationdate>19940316</creationdate><title>Re-energizable valve and valve seats</title><author>WITT, ROBERT L ; BATES, ROY C ; UNGCHUSRI, TEP</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0587006A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>1994</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>WITT, ROBERT L</creatorcontrib><creatorcontrib>BATES, ROY C</creatorcontrib><creatorcontrib>UNGCHUSRI, TEP</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WITT, ROBERT L</au><au>BATES, ROY C</au><au>UNGCHUSRI, TEP</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Re-energizable valve and valve seats</title><date>1994-03-16</date><risdate>1994</risdate><abstract>Disclosed is a type of valve of the sort that controls the flow of fluid and that contain a plug and at least one seat against which the plug presses to close the valve. The novel valve has floating seats, which can seal downstream, and only when desired, can also be re-energized to seal upstream. The upstream sealing capability of the invention provides a backup against downstream leaks, such as from low-pressure flows or parts failures such as due to wear or breakage. The valve can seal upstream through the use of hydraulic fluid, which is injected at high pressure into a sealed cavity behind the upstream seat, thereby forcing the seat against the plug. A novel seat seal design permits sealing against the fluid flow as well as isolation of the hydraulic injection ports from the fluid flow, during all operating states of the valve.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
| recordid | cdi_epo_espacenet_EP0587006A1 |
| source | esp@cenet |
| 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 | Re-energizable valve and valve seats |
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