1、May 2014 English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.01; 23.100.40!%C%b“2320263www.
2、din.deDDIN 3852-2Stud ends and ports of fittings, valves and plug screws Part 2: Dimensions for pipe thread,English translation of DIN 3852-2:2014-05Einschraubzapfen und Einschraublcher fr Rohrverschraubungen, Armaturen undVerschlussschrauben Teil 2: Konstruktionsmae fr Rohrgewinde,Englische bersetz
3、ung von DIN 3852-2:2014-05lments mles et orifices filetage pour raccordements, robinetterie et vis defermeture Partie 2: Dimensions de conception pour le filetage,Traduction anglaise de DIN 3852-2:2014-05SupersedesDIN 3852-2:2000-11www.beuth.deDocument comprises 11 pagesTranslation by DIN-Sprachendi
4、enst.In case of doubt, the German-language original shall be considered authoritative.0815 DIN 3852-2:2014-05 2 A comma is used as the decimal marker. Contents Page Foreword . 3 1 Scope . 4 2 Normative references . 4 3 Types and dimensions . 4 3.1 Stud ends . 4 3.1.1 Types and dimensions . 4 3.1.2 S
5、crew threads . 6 3.2 Ports . 7 3.2.1 Types and dimensions . 7 3.2.2 Screw threads . 9 4 Designation . 10 Annex A (informative) Explanatory notes . 11 DIN 3852-2:2014-05 3 Foreword This document (DIN 3852-2:2014) has been prepared by Working Committee NA 082-00-07 AA Rohrverschraubungen of the Normen
6、ausschuss Rohrleitungen und Dampfkesselanlagen (NARD) (Piping and Boiler Plant Standards Committee). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN and/or DKE shall not be held responsible for identifying any or all such pate
7、nt rights. Amendments This standard differs from DIN 3852-2:2000-11 as follows: a) the title of the standard has been modified; b) type B stud ends have been deleted; c) dimensions for type C stud ends have been deleted from Table 1 and are now given in a new Table 2; d) type X ports (standard desig
8、n) have been deleted; e) type Y ports (standard design) have been deleted; f) dimensions for type Z ports have been deleted from Table 2 and are now given in a new Table 4; g) Annex A (informative) “Explanatory notes” has been added; h) the standard has been editorially revised. Previous editions DI
9、N 3852-2: 1953x-08, 1964-10, 1991-11, 2000-11 DIN 3852-2:2014-05 4 1 Scope This standard specifies the dimensions, types and designation of stud ends for fittings, valves and plug screws (port plugs) and their ports that are not specified in DIN EN ISO 1179-1 to DIN EN ISO 1179-4. DIN 3852-2 contain
10、s specifications for component parts with a) pipe threads where pressure-tight joints are not made on the threads as in DIN EN ISO 228-1 and b) Whitworth pipe threads as in DIN 3858. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and
11、are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 3858, Whitworth pipe threads for pipe unions Parallel internal thread and taper external thread D
12、imensions DIN 7603, Sealing rings DIN EN 10226-1, Pipe threads where pressure tight joints are made on the threads Part 1: Taper external threads and parallel internal threads Dimensions, tolerances and designation DIN EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the thread
13、s Part 1: Dimensions, tolerances and designation DIN EN ISO 1179-1, Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 1: Threaded ports DIN EN ISO 1179-4, Connections for general use and fluid power Ports and stud e
14、nds with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 4: Stud ends for general use only with metal-to-metal sealing (type B) 3 Types and dimensions 3.1 Stud ends 3.1.1 Types and dimensions There are 2 types of stud ends depending on the sealing method: a) Type A: with additional
15、 sealing element, e.g. sealing by washer as in DIN 7603 (see Figure 1); b) Type C: with sealing by taper external thread and sealant (see Figure 2). DIN 3852-2:2014-05 5 Dimensions in millimetres Surface roughness in micrometres aThread chamfered to minor diameter Figure 1 Stud end type A Table 1 Di
16、mensions for stud ends type A Dimensions in millimetres Thread size Groove dimensions Application in fittings and valves in port plugs d1a2d3d5f1g1i1r W standard short stand-ard short design min. 00,403,03,00+02,0 0,2 0,2 G 1/8 A 1,5 14 10,0 2 8,3 8 8 8 6 1,0 0,1 G 1/4A 2,0 18 13,4 3 11,2 12 10 12 8
17、 1,2 G 3/8A 2,5 22 17,0 3 14,7 12 10 12 8 1,2 G 1/2A 3,0 26 21,3 4 18,4 14 12 14 10 1,2 G 3/4A 3,0 32 26,7 4 23,9 16 12 16 12 1,2 0,2 G 1 A 3,0 39 33,5 5 29,9 18 12 16 1,6 (G 11/8A)a3,0 44 38,2 5 34,6 20 14 16 1,6 G 11/4A 3,0 49 42,2 5 38,6 20 14 16 1,6 (G 13/8A)a3,0 51 44,6 5 41,0 22 14 1,6 G 11/2A
18、 3,0 55 48,1 5 44,5 22 14 16 1,6 (G 13/4A)a3,5 62 54,0 5 50,4 24 14 20 1,6 G 2 A 3,5 68 60,0 5 56,3 24 14 20 1,6 For screw threads see 3.1.2. aThe sizes given in brackets shall not be used in pipelines. DIN 3852-2:2014-05 6 Dimensions in millimetres Figure 2 Stud end type C (sealing by taper externa
19、l thread and sealant) Table 2 Dimensions for stud ends type C Dimensions in millimetres Thread size Design standard short d2i2amin. R 1/88 6,5 R 1/412 10,0 R 3/812 10,0 R 1/214 12,0 R 3/416 14,0 R 1 14,0 R 11/4 15,0 R 11/2 15,0 For screw threads see 3.1.2. aType C stud ends with i2(short) shall be p
20、rovided with a taper external thread with a useful thread of short length, with the thread length being in compliance with the specifications for taper screw threads given in DIN 3858. 3.1.2 Screw threads Type A stud ends with pipe thread as in DIN EN ISO 228-1, tolerance class A. Type C stud ends w
21、ith Whitworth pipe thread as in DIN 3858, tolerance class 1 (standard design), tolerance class 2 (short design). DIN 3852-2:2014-05 7 3.2 Ports 3.2.1 Types and dimensions There are 3 types of ports: a) Type X: with run-out, intended for use with type A stud ends (see Figure 3); b) Type Y: with groov
22、e, intended for use with type A stud ends (see Figure 4); c) Type Z: with run-out, intended for use with type C stud ends (see Figure 5). Dimensions in millimetres Surface roughness in micrometres Figure 3 Port type X (with run-out, intended for use with type A stud ends) Dimensions in millimetres S
23、urface roughness in micrometres Figure 4 Port type Y (with groove, intended for use with type A stud ends) DIN 3852-2:2014-05 8 Table 3 Dimensions for ports type X and type Y Dimensions in millimetres Thread size Short Groove dimensions Short design design d1a1b1d4ad7f2g2r t1t2bW stand-ard short max
24、. min. min. toler- ance 3,00+3,00+min. min. G 1/81,0 6 15 9,8 +0,2 0 3 2 9,9 1,0 8 8 0,1 G 1/41,5 9 20 13,2 4 3 13,4 1,2 12 12 G 3/82,0 9 23 16,7 4 3 16,9 1,2 12 12 G 1/22,5 12 28 21,0 6 4 21,2 1,2 16 16 G 3/42,5 12 33 26,5 6 4 26,7 1,2 16 16 0,2 G 1 2,5 14 41 33,3 +0,3 0 8 5 33,5 1,6 19 19 (G 11/8)
25、b2,5 14 45 37,9 8 5 38,1 1,6 19 19 G 11/42,5 14 51 42,0 8 5 42,1 1,6 19 19 (G 13/8)b2,5 14 52 44,4 8 5 44,6 1,6 19 19 G 11/22,5 14 56 47,9 8 5 48,1 1,6 19 19 (G 13/4)b3,0 14 63 53,8 8 5 54,0 1,6 19 19 G 2 3,0 14 69 59,7 8 5 59,9 1,6 19 19 For screw threads see 3.2.2. aThe counterbore d4may be dispen
26、sed with if no washer is used and the contact face is flat and normal to the thread axis. aThe sizes given in brackets shall not be used in pipework applications. DIN 3852-2:2014-05 9 Dimensions in millimetres NOTE Thread chamfered to diameter d1. Figure 5 Port type Z (with run-out, intended for use
27、 with type C stud ends) Table 4 Dimensions for port type Z Dimensions in millimetres Thread size Design standardashortbstandardashortbd1b2t3min. min. Rp 1/85,5 4,8 8,5 6,8 Rp 1/48,5 7,5 12,5 10,5 Rp 3/88,5 7,5 12,5 10,5 Rp 1/210,5 9,5 16,5 13,5 Rp 3/413,0 11,5 19,0 15,5 Rp 1 11,5 16,5 Rp 11/4 11,5 1
28、6,5 Rp 11/2 11,5 16,5 For screw threads see 3.2.2. aTo be used for standard and short stud ends. bTo be used for short stud ends only. 3.2.2 Screw threads Type X and type Y ports shall have a pipe thread as in DIN EN ISO 228-1. Type Z ports shall have a parallel internal thread as in DIN 3858. DIN 3
29、852-2:2014-05 10 4 Designation The designation of stud ends and ports conforming to this standard shall include the following items, given in the order below: a) Name: stud end or port; b) Standard number: DIN 3852-2: c) Type according to 3.1.1 or 3.2.1; d) Letter symbol to denote the type: standard
30、 design (no symbol), short design (K); e) Nominal thread size (e.g. G 1/2). EXAMPLE 1 Designation of a stud end type A of standard design, thread size G 1/2A (G 1/2):Stud end DIN 3852-2 A G 1/2EXAMPLE 2 Designation of a port type X of short design, thread size G 3/4: Port DIN 3852-2 X K G 3/4EXAMPLE
31、 3 Designation of a port type Z of standard design, thread size Rp 3/8(R 3/8): Port DIN 3852-2 Z R 3/8DIN 3852-2:2014-05 11 Annex A (informative) Explanatory notes Since this standard specifies two types (standard and short) for type C taper stud ends, DIN 3858 specifies class 1 plus/minus tolerance
32、s for the plane of test (standard design) and class 2 minus tolerances for the plane of test (short design). All other valves and fittings used in domestic installations shall have threads complying with DIN EN 10226-1. On no account shall stud ends with a long taper external thread as specified in DIN EN 10226-1 be screwed into a component with a shortened internal thread as specified in DIN 3852-2.
