An
Company
B-2231-UK-11-2013-REV. C
No.
Description
Material
Standard Coating
1 Stem
Stainless Steel - AISI 420
Stainless Steel - AISI 431 (ANSI 150 and PN16 >DN200)
2 Preventing Plate Stainless Steel - AISI 316
3 Screw
Stainless Steel - AISI 304
4 O-ring
NBR/EPDM/FPM
5 Bushings
PTFE
6 Body
Ductile iron - ASTM A536 Gr 65-45-12 (GGG40)
Carbon Steel - ASTM A216 WBC (GSC25N)
Stainless Steel - ASTM A351 CF8M
3 layer coating EPOXY/EPOXY/PUR 160µ
RAL 9006
7 Seat
NBR
EPDM
FPM
8 Disc
Low alloy stainless steel - ASTM A276 (SS201)
Ductile Iron - ASTM A536 Gr 65-45-12 (GGG40)
Ductile Iron
Stainless Steel - ASTM A351 CF8M
Alu-bronze - ASTM B148 C95800
Duplex
Hastelloy
Rilsan
ECTFE
9 Screw
Stainless Steel - AISI 410
10 Stem
Stainless Steel - AISI 420
Stainless Steel - AISI 431 (ANSI 150 and PN16 >DN350)
11 O-ring
NBR/EPDM/FPM
12 Nut
Stainless Steel - AISI 304
13 O-ring
NBR/EPDM/FPM
14 Bolts
Stainless Steel - AISI 304
15 Washers
Stainless Steel - AISI 304
16 Cover
Stainless Steel - AISI 304
17 Bushing
PTFE + Graphite
Structure and material
Type 2231 Wafer / 2241 Lug - DN350 to DN600
1
Wafer
Lug
2
3
4
5
6
4
7
5
8
9
10
11
13
15
12
14
16
4
17
Know-how makes the difference
9
