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DEUTSCHE NORM October 1989
DC621.646.616-034
DIN
3357
Metal ball valves
Part 1
eneral requirements and methods
of
test
Kugelhhne; allgemeine Angaben fr Kugelhhne aus metallischen Werkstoffen
Supersedes
August
1982
edition.
1 Field
of
application
This standard provides general information regarding the presentation of standards dealing with general purpose metal
ball valves.
It
specifies details to be included
in
the standard designation,and also requirements and methods of test for
ball valves with regard to dimensions, valve pattern, trim, body materials and marking.
2
Nominal sizes and pressure ratings
The nominal sizes shall be selected from DIN
2402
and the pressure ratings, from DIN
2401
Part 1
3
Designation
The standard designation for ball valves
as
specified in the DIN3357 eries of standards shall take the following form:
Ball
valve DIN
3357 X XXXX PN XXX XXX XXX
Term
DIN number
Hyphen
Letter symbol denoting face-to-face or centre-to-face
dlmension if different sizes are assigned to one
pressure rating
Nominal size
Symbol denoting pressure rating'
Nominal pressure
Hyphen
Code number (number of relevant Part of DIN 3357
Type symbol (the type symbol covers valve pattern, material and trim)
4
Dimensions
4.1
Face-to-face and centre-to-face dimensions
The face-to-face or centre-to-face dimension shall be selected from DIN
3202
Part 1 flanged end ball valves),DIN
3202
Part 2 weld end ball valves), DIN3202Part3 wafer type ball valves), DIN3202Part 4 (threaded end ball valves), or from
DIN
3202
Part
5
(ball valves with compression ends).
4.2 Space requirement
In DIN
3357
Parts
2
o 7,the space requirement dimensions are specified as the maximum dimensions of the enveloping
body enclosing a ball valve with handwheel.
In the case of ball valves which are not capable of being operated by a handwhee1,the height required is the distance be-
tween bottom end of valve body and top end
of
stem.
Continued on pages 2 o 7
~ ~
th Verlag Gmb H, Berlin, has the exclusiv e right of sale for German Standards
[DIN-Nonnen).
DIN
3357 Pari 1 Eng/ . Price
group
09 90
.
Sales
No.
u107
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Page 2 DIN 3357 Part 1
One piece body
With open
bottom
ealed Axial entry Top entry
4.3 Vahreends
Valve ends may be designed as
a) flanged ends, with mating dimensions as specif ied in DIN 2501 Part 1;
b)
weld ends, with mating dimensions as specified in DIN 3239 Part 1;
c) threaded ends, with internal thread as specified in DIN 2999 Part
1;
d)
threaded ends, with NPT internal thread as specif ied in ANSI
B
2.1;
e) compression ends, as specified in DIN 2353;
r)
threaded ends, with internal and external thread as specified in I S 0 228 Part 1;
g
ball type nipple screwed union, as specified in DIN 7601.
mpes and
trim
5.1 Body
construction
Split body
Wafer type
body
(three piece)
Single or multiple
split
Table 1.
1
2
3
4
10 to 100 NBR*), CRZ), PA'), POM')
-
10
to + 150 EPDMZ), FEPI)
- 10to+200 FPM3)
-
196 to
+
200
PTFE'), PFA1)
5.2 Stem seal
The stem seal shall be of the self-sealing type.
5.3 Seat seal
The seat seal shall be of the self-sealing type.
5.4
Trim material
The type
of
trim required foragiven ballvalve shall
B
defined by specifying heca sgoryofthe stem,seat and boi-,'connec.>r
seal.The maximum working pressure corresponding o the pressure rating can only be fully uti lizedfor the emperature anges
associated with the particular seal category.
Table 2.
~~~~~
Seal category Suitable materials (examples)
I
5
-
50 to
+
400 I t4), metal, graphite
1) As in DIN 7728 Part 1.
2 As in VDI 2537.
3
As in VDI 2531.
4)
As in DIN 3754 Part 1.
In he relevant product standards DIN 3357Parts 2
to
7), narrower imits may be specified or the temperature anges given in
table 2.
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DIN 3357 Part 1
Page 3
Table
3.
Pressure temperature
ratings
for se l category 4 ball valves
The maximum working pressures specified in table 3 are minimum values and shall apply for seal materials without fi ller (Le.
asbestos-free materials), ntermediate values being obtained by linear interpolation.The maximum working pressure or tem-
peratures from 96C to-30C are not to be specified before the manufacturer has been consulted.
5.5 Handwheel
Unless otherwise specified in DIN 3 3 s Parts 2 to 7 ball valves shall be supplied with a handwheel.
6 Body materials
The materials listed
in
table 4 are materials of the pressure containing parts
of
the body, he choice of body material from
among the materials belonging to a particular material group being up to the manufacturer.The body port ends may also be
made of materials as specified in DIN 1629, DIN 1630, DIN 17172 and 17175.
Table 4.
Material group
Lamellar graphite cast iron
Nodular graphite cast iron
Unalloyed and low alloy steel
3e e cutting steel
Stainless steel
Material
number
0.6020
0.6025
0.7040
0.7043
0.7050
1 O037
1 O254
1 O050
1 O460
1 O501
1.0619
1 O401
1 O403
1
O402
1 O404
1 O501
-
1 O715
1.0718
1.4000
1.4027
1.4301
1.4308
1.431
O
1.4401
1.4404
1.4406
1.4408
1.4410
1.454 1
1.4571
1.4581
Material designation
GG-20
GG-25
GGG-40
GGG-40.3
GGG-50
St 37-2
St
37
St 50-2
C 22.3
C 22.8
c 35
GS-C 25
C 15
C 15Pb
c 22
C 22 Pb
c 35
9 SMn 28
9 SMnPb 28
X 7 C r 1 3
G-X 20 Cr 14
X 5 CrNi 189
G-X 6 CrNi 189
X 12 CrNi 177
X 5 CrNiMo 18 10
X 2 CrNiMo 1810
X 2 CrNiMoN 18 12
G-X 6 CrNiMo 18 10
X 10 CrNiTi 189
X 10 CrNiMoTi 18 10
G-X 7 CrNiMoNb 18 10
G-X 10 CtNiMo 189
Specified in
DIN 1691
DIN 1691
DIN 1693 Part 1
DIN 1693Part 1
DIN 1693 Part 1
DIN 17100
DIN 1629
DIN 17100
VdTV Material sheet 364
5)
VdTV Material sheet 3505)
DIN
1652
DIN 17245
DIN 17210
Not specified.
DIN 17200
Not specified.
DIN 17200
DIN 1651
DIN 1651
DIN 17440
DIN 17445
DIN 17440
DIN 17445
DIN 17445
DIN 17440
DIN 17440
DIN 17440
DIN 17445
DIN 17445
DIN 17440
DIN 17440
DIN 17445
i
Obtainable from: Maxirnilian Verlag, Postfach 3 71, D-4900 Herford.
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Page 4 DIN 3357 Part 1
Table 4 (concluded).
Material group
Steel with
ow
temperature toughness
Fine grain structural steel
Copper alloys
Aluminium alloys
Material
number
1 O356
1.7219
1.6902
1.1156
1
O508
1 O566
1 O565
2.0380
2.0401
2.0360
2.1020
2.1 030
2.1050.01
2.1096.01
2.0340.02
2.1086.01
~
3.2151 O1
3.2341 O1
3.2341 O2
3.2383.01
3.2383.02
3.2382.05
3.2581 O1
3.3241.01
3.2315.71
3.3206
3.3535
~~
Material designation
TTSt 35
GS-26 CrMo 4
G-X 6 CrNi 1810
GS-Ck 24
TStE 315
TStE 355
WStE 36
CuZn39Pb2
CuZn39Pb3
CuZn40*)
CuSn6
CuSn8
G-CuSn 10
G-CuSn5ZnPb
GK-CuZn37Pb
G-CuSnl OZn
~
G-ALS~GCU~
G-AISi5Mg
GK-AISi5Mg
G-AlSi1OMg(C)
GK-AlSi1OMg(C)
GD-AlSi1OMg
G-AISi12
G-AIMg3Si
AlMgSi1 F28
AlMgSi0,5
AiMg3
Specified in
SEW 6806,
SEW 6856)
SEW 6856)
SEW 6856)
SEW 0896)
SEW 0896)
SEW 0896
DIN 17 660
DIN 17660
DIN 17 660
DIN 17662
DIN 17662
DIN 1705
DIN 1705
DIN 1709
DIN 1705
DIN 1725 Part 2
DIN 1725 Part 2
DIN 1725 Part2
DIN 1725 Part 2
DIN 1725 Part 2
DIN 1725 Part 2
DIN 1725 Part 2
DIN 1725 Part 2
DIN 1747 Part 1
DIN 1725 Part 1
DIN 1725 Part 1
) Note. This symbol, as used in the standard designations given in DIN 3357 Parts 4 and 5, represents a group of
3 Obtainable from Verlag StahleisenmbH, Postfach 82 29, D-4000 Dsseldorf.
alloys.
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DIN3357Part 1 Page 5
7 Requirements and testing
Ball valves shall meet the requirements given in tables 5 and 6. Compliance with the requirements listed in table 5 shall be
checked by the manufacturer for every valve,compliance with those listed
in
table 6, by n-process testing on the basis of ran-
dom sampling.
Table
5.
Ser. No.
1
2
3
4
5
6
7
8
9
Requirement
Compliance with the purchase order data
~~~
Type, pattern and trim material
On delivery, valves shall be in their as ordered condi-
tion.
Marking
The marking on the valves shall comply with the
standard and be legible.
Surfaces
The surfaces shall exhibit no defects likely to impair
safety or proper functioning of the valve.
Protective coatings
The parts that require protection shall be provided
with a protective coating.
~
Actuation
The valve shall be capable of being actuated properly
on delivery. In the as installed position of the valve,
the stem positions shall be clearly identifiable.
~~ ~~
Strength of valve body
In the strength test, the body shall show no signs of
deformation for the specified test duration.
Tightness of body and stem seal
In the tightness test, the body connector seal shall be
tight for the specified duration of test. Leakage rate 1
shall apply to the tightness of the stem seal.
Seat tightness
Seat leakage rate 1shall apply for seal categories 1 to
4, and leakage rate
2
or seal category
5
valves when
subjected to the nominal pressure or the maximum
differential pressure.
If the production cycle time is shorter than the test
juration specified in
DIN 3230
Part
3,
he test dura-
tion for all valves shall be equal to the cycle time, ran-
Jom samples being taken and tested to test level 3
'or the test duration specified in
DIN
3230Part 3.
Testing as in
DIN
3230
AA
DIN 3230 AB
DIN 3230
C
DIN
3230
- AE
DIN 3230 P
DIN
3230
- AG
DIN
3230
- BA, the test duration being equal
to with a minimum of 10s.
In the case of PN 4 valves, the strength test may
be carried out together with the tightness test,
using air.
DN
10
DIN
3230
- BO, the test duration being equal
to with a minimum of
10s.
N
10
DIN3230 BN or BO
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Page 6 DIN 3357 Part 1
Requirement
Dimensions
The dimensions as specified in the dimensional
standards shall lie within the permissible olerances.
Condition of end faces
The surface condition of the end faces shall comply
with the specifications of the relevant flange
standard.
Table 6.
Testing as in
DIN 3230 -AD, test level 2
DIN 3230 -AF, test level 2
Ser. No.
1
2
Additional requirements and methods of test which are specified in the relevant technical rules (e.g. DIN 3230 Parts 4 to 6,
TRD
3,AD-Mefkblgtter (AD Instruct ion sheets)7)) shall be agreed at the time of ordering.
9 Marking
Marking of valves shall be as specified in EN 19.
Standards referred to and other documents
DIN 1629
DIN 1630
DIN 1651
DIN 1652
DIN 1691
DIN 1693 Part
1
DIN 1705
DIN 1709
DIN 1725 Part 1
DIN 1725 Part2
DIN 1747 Part 1
DIN 2353
DIN 2401 Part 1
DIN 2402
DIN 2501 Part
DIN 2999 Part
1
DIN 3202 Part 1
DIN 3202 Part2
DIN 3202 Part 3
DIN 3202 Part 4
DIN 3202 Part5
DIN 3230Part3
DIN 3230 Part4
DIN 3230 Part5
DIN 3230Part6
DIN 3239 Part
1
DIN 3357 Part 2
DIN 3357 Part 3
DIN 3357 Pa rt4
DIN 3357 Part5
DIN 3357Part6
DIN 3357Part7
DIN 3754 Part 1
Seamless circular unalloyed steel tubes subject to special requirements; technical delivery conditions
High performance seamless circular unalloyed steel tubes; technical delivery conditions
Free cutting steels; technical delivery conditions
Bright unalloyed steel; technical delivery conditions
Cast iron with lamellar graphite (grey cast iron); properties
Cast iron with nodular graphite; unalloyed and low alloy grades
Copper-tin and copper-tin-zinc casting alloys; castings
Copper-zinc casting alloys; castings
Aluminium wrought alloys
Aluminium casting alloys; sand casting, gravity die casting, pressure die casting, investment casting
Wrought aluminium and aluminium alloy rod and bar; properties
Solderless compression fittings; screwed union assemblies
Components subject to internal or external pressure; pressure and temperature specifications; con-
cepts and pressure ratings
Pipelines; nominal sizes, concept and grading
Flanges; mating dimensions
Pipe threads for tubes and fittings: parallel nternal thread and taper external thread; dimensions
Face-to-faceand centre-to-face dimensions; flanged valves
End-to-face and centre-to-end dimensions; weld end valves
Face-to-face dimensions; wafer type valves
Face-to-faceand centre-to-face dimensions; valves with female thread connection
Face-to-faceand centre-to-face dimensions; valves with compression ends
Technical delivery condit ions for valves, summary of test methods
Technical delivery conditions for valves; drinking water valves; requirements and testing
Technical delivery conditions for valves; valves for gas applications; requirements and testing
Technical delivery conditions for valves; valves for combust ible liquids; requirements and testing
Valve welding ends
Ball valves; full bore steel ball valves
Ball valves; reduced bore steel bal l valves
Ball valves; ful l bore non-ferrous metal ball valves
Ball valves; reduced bore non-ferrous metal ball valves
Ball valves; full bore cast iron ball valves
Ball valves; reduced bore cast iron ball valves
Gasket materials; compressed asbestos fibre sheets; dimensions, requirements and testing
7 Obtainable from
Beuih
Verlag GmbH,BurggrafenstraBe6, -1000 Berlin 30 and Carl Heymanns VerlagKG uxemburger
Stra6e 449, D-5000 Kln 1.
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DIN 3357 Part 1 Page 7
DIN 7601
DIN 7728Part
1
DIN 17100
DIN 17172
DIN 17175
DIN 17200
DIN 17210
DIN 17245
DIN 17440
DIN 17445
DIN 17660
DIN 17662
I S 0
228 Part 1
EN 19
VDI 2531
VDI 2537
Ball type nipple screwed pipe unions; screwed pipe union assemblies
Plastics; symbols for homopolymers, copolymers and polymer mixtures
Steels for general structural purposes; quality standard
Steel pipes for long-distancepipelines or combustible iquids and gases; technical delivery conditions
Seamless tubes of heat-resistantsteels; technical delivery conditions
Steels for quenching and tempering; technical delivery conditions
Case hardening steels; technical delivery conditions
Ferritic steel castings with elevated temperature properties; echnical delivery conditions
Stainless steels; technical delivery conditions for plate and sheet, hot rol led strip, wire rod, drawn wire,
steels bars, forgings and semi-finished products
Stainless steel castings; technical delivery conditions
Wrought copper alloys: copper-zinc alloys; composition
Wrought copper alloys; copper-tin alloys; composition
Pipe threads where pressure-tight oints are not made on the threads; designation,dimensions and toler-
ances
Marking of general purpose industr ial valves
Oberflchenschutz
durch
Beschichtungen
und
Auskleidungen mit organischen Werkstoffen; Wahl der
Unerkstoffe und Verfahren (Surface protect ion using organic materials; selection of coating materialsand
processes)
Oberflchenschutzmit organischen Werkstoffen; Oberf/chenschutz mit Bahnen auf Basis von Natur-und
Synthesekautschuk (Surface protection using organic materials; surface protection with rubber and elas-
tomer sheeting)
VdThl-Werkstoffblatt
VdTV
Material sheet)
350
5)
Unlegierter Walz- und Schmiedestahl (Unalloyed rolled steel and forged
steel)
VdTV-Werkstoffblatt 3645) Flansche aus uniegiertem Stahl (Unalloyed steel flanges)
Stahl-isen-Werkstot /aZt (Iron and steel materialssheet) 0896) SchweiBbareFeinkornbaust h/e;Gtevorschriften (Weldable
fine-grain structural steels: quality specifications)
Stahl-Eisen-Werkstoffblait 6806) Kakzhe Sthle; Gtevorschriften (Steel with low temperature toughness, quality speci-
fications)
Stahl-Eisen-Werkstof fb la~
85 Kaltzher StahlguB; Gtevorschriften (Steel casting with
low
temperature toughness, qual ity
specifications)
ANSI B 2.1 8 Pipe threads (except dry seal)
Previous edit ions
DIN 3357 Part 1: 12.81, 08.82.
Amendments
In comparison with the August 1982 edition, he temperature ange for seal category4 specified n table
2
has been amended
to - 96C to 200C (instead of 230C).
International Patent Classification
F 16 K 5/06
For 9, ee page 3.
For 6 .see page
4.
8 Obtainable from Beuth Verlag GmbH Auslandsnormenvermitt lung), BurggrafenstraBe 6,D-1000 Berlin 30.