B-2231-UK-11-2013-REV. C
An
Company
No.
Description
Material
Standard Coating
1 Stem
Stainless steel - AISI 420
2 Preventing plate Stainless steel - AISI 316
3 Screw
Stainless steel - AISI 304
4 V-ring
NBR
EPDM
FPM
5 Bushings
PTFE
6 Body
Ductile Iron - ASTM A536 Gr 65-45-12 (GGG40)
Carbon steel - ASTM A216 WCB (GSC25N)
Stainless steel - ASTM A351 CF8M
3 layer coating EPOXY/EPOXY/PUR 160µ
RAL 9006
7 Seat
NBR
EPDM
FPM
8 Disc
Stainless steel - ASTM A351 CF8M
Low alloy stainless steel - ASTM A276 (SS201)
Ductile iron - ASTM A536 Gr 65-45-12 (GGG40)
Ductile iron
Alu-bronze - ASTM B148 C95800
Duplex
Hastelloy
Rilsan
ECTFE
9 Bushing
Graphite/PTFE
10 Stem
Stainless steel - AISI 420
11 O-ring
NBR/EPDM/FPM
12 Plug
Steel
Galvanized
Structure and material
Other materials available.
Type 2231 Wafer / 2241 Lug - DN40 to DN300
Wafer
Lug
1
2
3
4
5
6
4
7
8
9
10
11
12
4
8
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