BS 5041-2:1987
Current
The latest, up-to-date edition.
Fire hydrant systems equipment Specification for landing valves for dry risers
Hardcopy , PDF
English
31-03-1987
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Foreword
Committees responsible
Specification
Section one. General
1 Scope
2 Definitions
3 Pressure rating
4 Nominal inlet sizes
5 Temperature rating
6 Marking
Section two. Design
7 Materials
8 Valve bodies
9 Valve inlets
10 Valve outlets
11 Bonnets
12 Wedge gates
13 Stems
14 Stem sealing
15 Glands
16 Handwheels and operation
17 Bolting
18 Pressure retention
19 Strap
20 Blank cap and chain
Section three. Production testing requirements and test
certificate
21 Hydrostatic test requirements
22 Test certificate
Appendices
A Hydrostatic tests methods
B Recommendations for the information to be supplied
by the purchaser to the manufacturer
Tables
1 Choice of materials for components and parts
2 Bolting for valves
Material and design requirements for copper alloy gate valves for dry rising mains to BS 5306-1.
| Committee |
FSH/17
|
| DevelopmentNote |
Supersedes BS 5041-2(1976) (10/2001) Supersedes 86/35863 DC. (07/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This Part of BS 5041 specifies requirements for copper alloy gate valves generally complying with BS 5154, suitable for installation as landing valves on dry risers. The valves have screwed or flanged inlets and also delivery hose connections complying with BS 336. The standard covers valves of nominal pressure (PN) designation 15 bar and nominal inlet size DN 65 for flanged ends and 2½ for screwed ends.
NOTE 1. Unless otherwise stated all pressures are gauge pressures expressed in bar: 1 bar = 105 N/m2 = 100 kPa.
NOTE 2. Information which the purchaser is recommended to supply to the manufacturer is given in appendix B and does not form part of the specification.
NOTE 3. The titles of the publications referred to in this standard are listed on the inside back cover.
| BS 1769:1951 | Specification. Unified black hexagon bolts, screws, nuts (UNC & UNF threads). Heavy series |
| BS 4439:1969 | Specification for screwed studs for general purposes. Metric series |
| BS 3763:1976 | The International System of units (SI) |
| BS 5041-3:1975 | Fire hydrant systems equipment Specification for inlet breechings for dry riser inlets |
| BS 5041-1:1987 | Fire hydrant systems equipment Specification for landing valves for wet risers |
| BS 2789:1985 | Specification for spheroidal graphite or nodular graphite cast iron |
| BS 5041-5:1974 | Fire hydrant systems equipment Specification for boxes for foam inlets and dry riser inlets |
| BS 2693-1:1956 | Specification for screwed studs General purpose studs |
| BS 5306-1:1976 | Fire extinguishing installations and equipment on premises Hydrant systems, hose reels and foam inlets |
| BS 1490:1988 | Specification for aluminium and aluminium alloy ingots and castings for general engineering purposes |
| BS 5041-4:1975 | Fire hydrant systems equipment Specification for boxes for landing valves for dry risers |
| BS 3692:2001 | ISO metric precision hexagon bolts, screws and nuts. Specification |
| BS 4504-2:1974 | Circular flanges for pipes, valves and fittings (PN designated) Copper alloy and composite flanges |
| BS 6681:1986 | Specification for malleable cast iron |
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