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Valves flanged in accordance with BS Copyright Copyright subsists in all BSI publications.

Except as permitted under the Copyright, Designs and Patents Act no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means — electronic, photocopying, recording 510 otherwise — without prior written permission from BSI.

NOTE 2 Dotted lines denote maximum envelope for transitions from welding groove.

BSCircular flanges for pipes, valves and fittings Class designated. Contact the Information Centre. We would bolstin grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover.

BSSpecification for quality levels for steel valve castings.

BS – PDF Free Download

Trim marking shall indicate trim in the following order: BSSpecification for Class 1 arc welding of ferritic steel pipework for carrying fluids. Revisions British Standards are updated by amendment or revision. NOTE The purchaser should state in the enquiry or order whether flanges without bolt holes are required. Various BSI electronic information services are also available which give details on all its products and services.


NOTE 1 Hydrostatic seat and back seat tests are recommended in preference to pneumatic tests. At the time of publication of this British Standard, no corresponding international standard exists. SITE To ensure the functioning of the site, we use cookies.

Hepburn, Hays – ESOL

It presents the UK view on standards in Europe and at the international level. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 20, an inside back cover and a back cover. The shell test shall be a hydrostatic test.

BS preview of BS ClassClass and Class In carrying out this revision, the types and ranges of valves covered have been changed. Body markings shall include the following. When required by the purchaser the manufacturer shall supply a certificate stating that t he valves and valve parts comply in all respects with the requirements of this standard.

C detailing guide to bs NOTE 5 Valves having nominal wall thickness of 3 mm or less at the weld preparation may have ends cut square or slightly chamfered ends. BSFace-to-face, centre-to-face, end-to-end and centre-to-end dimensions of valves. NOTE 4 Intersections should be slightly rounded.

We share information about your activities on the site with our partners and Google partners: BSValve mating details for actuator operation. Compliance with a British Standard does not of itself confer immunity from legal obligations. The design of the handwheel, when fitted, or the method of handwheel to stem attachment, shall be such as to permit the fitting of a 1. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.


ASTM A, Specification for carbon-steel castings suitable for fusion welding for high-temperature service. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards.

The minimum corrosion resistance of any metallic part of the gasket shall be equal bopetin the corrosion resistance of the shell.

BSSpecification for unfired fusion welded pressure vessels. For details of these and other benefits contact Membership Administration. Body seat rings shall be so fitted as to avoid their becoming loose in service. A product utilizing any combination of the details shown in each particular figure except when such combination may be specifically prohibited in the text or similar construction will be acceptable provided it complies with this standard in all other respects. Your consent to our cookies if you continue to use this website.

NOTE Symbols indicating trim material may either be preceded by the words stem, disk, or seat, o r used in the order indicated.