bsen736-3-1999valves—terminology—part3definitionofterms

bsen736-3-1999valves—terminology—part3definitionofterms内容摘要：

etal valves for use in flanged pipe systems — Part 1: PN. designated valves. EN 5582, Industrial valves — Facetoface and centretoface dimensions of metal valves for use in flanged pipe systems — Part 2: Classdesignated valves. EN 764, Pressure equipment — Terminology and symbols — Pressure, t emperature, volume. EN 1333, Pipework ponents — Definition and selection of PN. prEN 17593, Flan ges and t heir joints — Circular flanges for pipes, valves, fittings and accessories, class designated — Part 3: Copper alloy and posit e flanges. EN ISO 6708, Pipework ponents — Definition and selection of DN (nominal size). (ISO 6708:1995) EN 605341, Industrialprocess control valves — Part 1: Control valve t erminology and general considerations. (IEC 605341:1987) 3 Definitions For the purposes of this standard, the following definitions apply. Terms relating to pressure and temperature allowable pressure, ps EN 764 test pressure, pt EN 764 Copyright British Standards Institution I 24 October 2020 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2020 Reproduced by IHS under license with BSI Uncontrolled Copy 05:35:15 MST Questions or ments about this message: please call the Document Policy Group at 3033972295. 4 169。 BSI 24 O `,``,`,`,`,`,`,``,``,`,`,`,` EN 7363:1999 allowable temperature, t s EN 764 test temperature, tt EN 764 PN EN 1333 class prEN 17593 allowable differential pressure maximum allowable static differential pressure at a given temperature of a valve when it is in the closed position Terms relating to dimensions DN (nominal size) EN ISO 6708 NPS prEN 17593 facetofac e dimension, FTF EN 5581 and EN 5582 centretoface dimension, CTF EN 5581 and EN 5582 endtoend dimension, ETE distance expressed in millimetres between the ends of the body for straight pattern valves other than those with flanged ends centretoend dimension, CTE distance expressed in millimetres between one of the ends of the body and the centre of the body for angle pattern valves other than those with flanged ends travel EN 605341 relative travel, h EN 605341 rated travel EN 605341 Copyright British Standards Institution Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2020ctober 2020 Reproduced by IHS under license with BSI Uncontrolled Copy 05:35:15 MST Questions or ments about this message: please call the Document Policy Group at 3033972295. 169。 BS `,``,`,`,`,`,`,``,``,`,`,`,` 5 EN 7363:1999 maximum travel for valves with mechanical end stops, the total displacement of the obturator between these mechanical end stops NOTE 1 The mechanical end stops may be in the body, the bon or cover, the operating device, etc. Terms relating to design full bore valve valve with the seat diameter not less than 90 % of the nominal inside diameter of the body end port NOTE The nominal inside diamet er of the body end port for the particular valve type is specified in the correspondin g produ ct or perform an c e stand ard . clearway valve valve designed to have an unobstructed flow way which allows the passage of a theoretical sphere with a diameter which is not less than the nominal inside diameter of the body end port NOTE The nominal inside diamet er of the body end port for the particular valve type is specified in the correspondin g produ ct or perform an c e stand ard . reduced bore valve valve with a seat diameter less than 90 % and not less than 60 % of the nominal inside diameter of the body end port NOTE The nominal inside diamet er of the body end port for the particular valve type is specified in the correspondin g produ ct or perform an c e stand ard . symmetric valve valve with an internal construction which has a plane of symmetry perpendicular to the axis of the body ends asymmetric valve valve with an internal construction which has no plane of symmetry perpendicular to the axis of the body ends antistatic design valve design which ensures electrical continuity between all the ponents in contact with the fluid and the shell antiblow out design valve design which ensures that the shaft or stem cannot be blown out of the shell when the valve is under pressure: — by disassembly of any external part。 or — by failure of the connection between obturator and shaft or stem even when external parts are removed. NOTE External parts are parts which are not include d in the bare shaft valve (bracket, lever, actuator ...). coating protective layer applied to a valve ponent or the valve itself to provide a protection against corrosion and/or to prevent contamination of the fluid by the valve Copyright British Standards Institution I 24 October 2020 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2020 Reproduced by IHS under license with BSI Uncontrolled Copy 05:35:15 MST Questions or ments about this message: please call the Document Policy Group at 3033972295. 6 169。 BSI 24 O。