Specification for draining taps (screw-down pattern)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-31-1980

Publisher

British Standards Institution

Foreword
Cooperating organizations
Specification
Section one. General
1 Scope
2 References
3 Definition
4 Materials
5 Marking
Section two. Design requirements
6 Nominal size
7 Pattern
8 General requirements
9 Seating
10 Washer plate
11 Lockshield
12 Keys
13 Inlet ends
14 Outlet ends
Section three. Materials and dimensions
15 Castings
16 Hot pressings
17 Dimensions
Section four. Test requirements
18 Hydraulic type tests
Tables
1 Dimensions of draining tap bodies
2 Dimensions of draining tap spindle, washer plate,
washer nut and key
3 Dimensions of draining tap gland and lockshield
Figures
1 Screw-down pattern draining tap: typical design
2 Dimensions of draining tap bodies
3 Dimensions of draining tap spindle, washer plate,
washer nut and key
4 Dimensions of draining tap gland and lockshield

Specifies ½ and ¾ nominal size copper alloy bodied taps for draining down hot and cold water installations and heating systems.

This British Standard specifies requirements for copper alloy bodied taps used for draining hot and cold water installations and heating systems. It covers nominal sizes of 1/2 and 3/4 only for use with water:

up to 70 °C with occasional excursions up to 90 °C max. for period of 1 h (type 1);
up to a maximum of 120 °C (type 2).

Committee	B/504
DevelopmentNote	Supersedes 78/11626 DC and 87/10080 DC (06/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
DocumentType	Standard
Pages	12
PublisherName	British Standards Institution
Status	Current

BS 3643(1963) : LATEST
BS 2874:1969	Specification for copper and copper alloys. Rods and sections (other than forging stock)
BS 93:1951	Specification for British Association (B.A.) screw threads with tolerances for sizes 0 B.A. to 16 B.A.
BS 2767:1972	Specification for valves and unions for hot water radiators
BS 5412&5413-5(1976) : AMD 4591	SPECIFICATION FOR THE PERFORMANCE OF DRAW-OFF TAPS WITH METAL BODIES FOR WATER SERVICES - PHYSIO-CHEMICAL CHARACTERISTICS MATERIALS COATINGS
BS 903-A26:1969	Physical testing of rubber Determination of hardness
BS 3457:1973	Specification for materials for water tap and stopvalve seat washers
BS 21:1973	Specification for pipe threads for tubes and fittings where pressure-tight joints are made on the threads
BS 2872:1969	Specification for copper and copper alloys. Forging stock and forgings
BS 4518:1974	Specification for metric dimensions of toroidal sealing rings (\'O\'-rings) and their housings
BS 864-2:1971	Capillary and compression tube fittings of copper and copper alloy. Metric units

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BS 2879:1980

Specification for draining taps (screw-down pattern)

Table of Contents

Abstract

Scope

General Product Information

Standards Referencing This Book

Category

Subcategory