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BS EN 1171:2015

BS EN 1171:2015

$142.49

Industrial valves. Cast iron gate valves

Published By Publication Date Number of Pages
BSI 2015 24
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This European Standard specifies the requirements for cast iron gate valves with flanged ends, socket ends or spigot ends.

This European Standard is applicable to cast iron gate valves mainly used for industrial and general-purpose applications. However, they can be used for other applications provided the requirements of the relevant performance standards are met.

The range of nominal sizes covered is:

DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 800; DN 900; DN 1 000.

The range of pressure designations covered is:

  • isobaric PN 6; PN 10; PN 16; PN 25;

  • isomorphic, PS 10 bar to PS 1 bar at room temperature.

PDF Catalog

PDF Pages PDF Title
4 Contents Page
6 1 Scope
2 Normative references
7 3 Terms and definitions
4 Requirements
4.1 Design
4.1.1 Materials
8 4.1.2 Pressure/temperature ratings
4.1.2.1 Isobaric series
4.1.2.2 Isomorphic series
9 4.1.3 Dimensions
4.1.3.1 Face-to-face and end-to-end dimensions
10 4.1.3.2 Body ends
4.1.3.3 Body end port inside diameter
11 4.1.4 Operation
4.1.4.1 Maximum height
13 4.1.4.2 Operating device
4.1.4.3 Operating direction
4.2 Functional characteristics
4.2.1 Shell design strength
14 4.2.2 Flow characteristics
4.2.2.1 General
4.2.2.2 Gate valves with obturator recess in the body
4.2.2.3 Gate valves without obturator recess in the body
4.2.3 Seat tightness
4.2.4 Sizing the operating element
4.3 Strength torque
15 5 Test procedures
6 Declaration of compliance
7 Designation
16 8 Marking, preparation for storage and transportation
8.1 Marking
8.2 Preparation for storage and transportation
17 Annex A (informative)Information to be supplied by the customer
18 Annex B (normative) Strength torque test
19 Annex C (normative)Equivalence between EN and ISO cast iron material grades
20 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC

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BS EN 1171:2015
$142.49