Industrial valves. Steel gate valves

BS EN 1984:2010 Industrial valves. Steel gate valves

BS EN 1984 is a European Standard which specifies the requirements for steel gate valves which are wrought, cast or fabricated with end connections flanged, butt welding, socket welding or threaded.

BS EN 1984 is applicable to steel 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 ranges of nominal sizes covered is:

DN 8; DN 10; DN 12; DN 15; DN 20; DN 25; DN 32; 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 750; DN 800; DN 900;

DN 1000.

DN 750 is used for Class designated valves only.

DN 8 and DN 12 are not used for flanged end connections.

Socket welding end valves and threaded end valves are limited to the range DN 8 to DN 65.

The range of pressure designations covered is:

a) for flanged valves

1) PN 10; PN 16; PN 25; PN 40; PN 63; PN 100

2) Class 150; Class 300; Class 600

b) for butt welding end valves

1) PN 10, PN 16, PN 25, PN 40, PN 63, PN 100

2) Class 150, Class 300, Class 600

c) for socket welding end valves and threaded end valves

1) PN 10; PN 16; PN 25; PN 40; PN 63; PN 100

2) Class 600; Class 800

Contents of BS EN 1984:

Foreword

1 Scope

2 Normative references

3 Terms and definitions

4 Requirements

4.1 Design

4.1.1 Materials

4.1.2 Pressure/temperature ratings

4.1.3 Dimensions

4.1.4 Operation

4.1.5 Auxiliary connections

4.1.6 Permanent joining

4.2 Functional characteristics

4.2.1 Shell design strength

4.2.2 Flow characteristics

4.2.3 Seat leakage

4.2.4 Permissible manual operating forces

5 Test procedures

6 Declaration of compliance

7 Designation

8 Marking and preparation for storage and transportation

8.1 Marking

8.2 Preparation for storage and transportation

Annex A (informative) Information to be supplied by the customer

Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC