Pipeline ancillaries Bellows sealed stop valves
10
Materials for the BSA1T, BSA2T, BSA3T and BSA1, BSA2, BSA3
BSA1T and BSA1
BSA2T and BSA2
BSA3T and BSA3
DIN
ANSI
No. Part
Cast iron EN-GJL-250 (5.1301)
SG iron EN-GJS-400-18-LT (5.3103)
Cast steel 1.0619+N (GSC 25N)
Cast steel ASTM A 216 WCB
1 Body
Steel (DN15 - DN80) DIN 17243 C 22.8 Steel (DN100 - DN200) 1.0619+N (GSC 25N)
Forged steel (DN15- DN80) ASTM A 105
SG iron EN-GJS-400-18-LT (5.3103)
2 Bonnet
Cast steel (DN100- DN200) ASTM A 216 WCB
3 Seat
Stainless steel AISI 420
Metal
Stainless steel DIN 17440 X30 Cr13
4 Disc
Disc
Stainless steel DIN 17440 X30 Cr13
Soft seat
Insert
R-PTFE 25% carbon filled
5 Bellows
Stainless steel WS 1.4571 EN10028-7 X6 CrNiMTi 17-12-2
6 Stem
Stainless steel AISI 420
7 Handwheel
Pressed steel BS 1449 CR4
Stem packing
Graphite
8
Bonnet studs
Steel DIN 17420 24 Cr Mo 5
Steel ASTM A 193 B7
Bonnet nuts
Steel DIN 17420 Ck 35
Steel ASTM A 192 2 H
9
Bonnet bolts
Steel DIN 931 Gr. 5.6
10 Body/bonnet gasket
Graphite laminated with stainless steel insert
DN15 (½") - DN80 (3") DN100 (4") - DN150 (6") DN200 (8") - DN250 (10")
Steel M8 x 14 mm BS 3692 Gr. 8.8
7.1.11
Locking screw
11
Steel M8 x 20 mm BS 3692 Gr. 8.8
Steel M12 x 20 mm BS 3692 Gr. 8.8
12 'D' washer
Mild steel
13 Circlip
Mild steel
14 Protective cap
Plastic
15 Top nut
Steel
10.1 14
Stroke limiter for throttling versions The handwheel nut on the BSA1T, BSA2T and BSA3T has a threaded hole for provision of a stroke limiter. Customer to supply standard nuts and bolts as indicated in the table below.
BSAT
Stroke limiter
Top nut
Size
Hexagon bolt
DN15 (½") - DN80 (3")
M8 x 50 mm
DN100 (4") - DN150 (6")
M12 x 75 mm
11
DN200 (8") - DN250 (10")
M12 x 100 mm
TI-P137-18 CMGT Issue 15
Page 8 of 17
BSAT and BSA Bellows Sealed Stop Valves
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