UNE-EN 1171:2016

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
  4.1 Design
  4.2 Functional characteristics
  4.3 Strength torque
5 Test procedures
6 Declaration of compliance
7 Designation
8 Marking, preparation of storage and transportation
  8.1 Marking
  8.2 Preparation of storage and transportation
Annex A (informative) - Information to be supplied by the
                         customer
Annex B (normative) - Strength torque test
Annex C (normative) - Comparison between EN and ISO cast
                         iron material grades
Annex ZA (informative) - Clauses of this European standard
                         addressing essential requirements
                         or other provisions of EU Directives

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.