BS EN 1171:2015 – TC:2020 Edition
$186.33
Tracked Changes. Industrial valves. Cast iron gate valves
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 48 |
This European Standard specifies the requirements for cast iron gate valves with flanged ends, socket ends or spigot ends. This 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 |
|---|---|
| 28 | Contents Page |
| 30 | 1 Scope 2 Normative references |
| 31 | 3 Terms and definitions 4 Requirements 4.1 Design 4.1.1 Materials |
| 32 | 4.1.2 Pressure/temperature ratings 4.1.2.1 Isobaric series 4.1.2.2 Isomorphic series |
| 33 | 4.1.3 Dimensions 4.1.3.1 Face-to-face and end-to-end dimensions |
| 34 | 4.1.3.2 Body ends 4.1.3.3 Body end port inside diameter |
| 35 | 4.1.4 Operation 4.1.4.1 Maximum height |
| 37 | 4.1.4.2 Operating device 4.1.4.3 Operating direction 4.2 Functional characteristics 4.2.1 Shell design strength |
| 38 | 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 |
| 39 | 5 Test procedures 6 Declaration of compliance 7 Designation |
| 40 | 8 Marking, preparation for storage and transportation 8.1 Marking 8.2 Preparation for storage and transportation |
| 41 | Annex A (informative)Information to be supplied by the customer |
| 42 | Annex B (normative) Strength torque test |
| 43 | Annex C (normative)Equivalence between EN and ISO cast iron material grades |
| 44 | Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC |
