BS 143 and 1256:2000

Committees responsible
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Types of fitting
5 Materials
6 Design options
7 Dimensions and tolerances
8 Threads
9 Manufacture
10 Characteristics
11 Assembly
12 Testing and inspection
12 Designation of fittings
14 Marking
Annex A (informative) Relationship between fitting
                        size and nominal size DN
Annex B (normative) Information to be obtained
                        from the purchaser
Annex C (normative) Effect of non-metallic materials
                        on water quality
Bibliography
Figures
1 - Forms of reinforcement
2 - Temperature/pressure ratings
3 - Outlets of fittings with more than two outlets
Tables
1 - Index of fitting types, symbols and specifying tables
      of this British Standard
2 - Design options
3 - Elbows A1; male and female elbows A4; tees B1; male
      and female tees; crosses C1
4 - Elbows, reducing A1; male and female elbows, reducing
      A4
5 - 45 degree elbows A1/45 degree; 45 degree male and
      female elbows A4/45 degree
6 - Tees, reducing on the branch B1; tees, increasing on
      the branch B1
7 - Tees, reducing on the run and branch B1; tees, reducing
      on the run and equal on the branch B1
8 - Bends D1; male and female bends D4; male bends D8;
      pitcher tees E1; twin elbows E2
9 - 45 degree male and female bends D4/45 degree
10 - Pitcher tees, reducing on the branch E1; pitcher tees,
      reducing on the run E1; pitcher tees, reducing on the
      branch and run E1
11 - Return bends Kb1
12 - Sockets M2; sockets, reducing M2; sockets, eccentric,
      reducing M3
13 - Bushes N4
14 - Hexagon nipples N8; hexagon nipples, reducing N8
15 - Backnuts P4
16 - Caps T1; plain plugs T8; beaded plugs T9; countersunk
      plugs T11; alternative slotted head plugs for sizes
      5 and 6
17 - Unions, flat seat U1; unions, taper seat U11; male
      and female unions, taper seat U12
18 - Elbow unions, taper seat UA11; male and female
      elbow unions, taper seat UA12
19 - Gaskets for unions, flat seat U1
20 - Tolerance on length
21 - Minimum depth of spanner flats
22 - Jointing threads
23 - Temperature/pressure ratings
24 - Design test pressures
Table A.1 - Relationship between fitting size and nominal
            size (DN)