Pipeline ancillaries

Bellows sealed stop valves

Materials for the BSA1T, BSA2T, BSA3T and BSA1, BSA2, BSA3

No. Part

1 Body

2 Bonnet

3 Seat

Metal

Soft seat

BSA1T

and

BSA1

Cast iron

EN-GJS-250

BSA2T

and

BSA2

SG iron

EN-GJS-400-18-LT

BSA3T and BSA3

4 Disc

Disc

Insert

Stainless steel DIN 17440 X30 Cr13

Stainless steel DIN 17440 X30 Cr13

R-PTFE 25% carbon filled

Stainless steel WS 1.4571 EN10028-7 X6 CrNiMTi 17-12-2

Stainless steel AISI 420

Pressed steel BS 1449 CR4

Graphite

5 Bellows

6 Stem

7 Handwheel

8 Stem packing

Bonnet studs

9 Bonnet nuts

Steel DIN 17420 24 Cr Mo 5

Steel DIN 17420 Ck 35

Graphite laminated with stainless steel insert

Steel M8 x 14 mm BS 3692 Gr. 8.8

Bonnet bolts

10 Body / bonnet gasket

Locking

DN15 - DN80

11 screw DN100 - DN150

DN200 - DN250

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.

7.1.9

Stroke

limiter

Handwheel

nut

Protection

cap

7

BSAT

9

2

5

1

Size

DN15 - DN80

DN100 - DN150

DN200 - DN250

Hexagon bolt

M8 x 50 mm

M12 x 75 mm

M12 x 100 mm

11

6

8

10

TI-P137-18 ST Issue 6

BSAT and BSA Bellows Sealed Stop Valves

Page 6 of 10

Steel DIN 931 Gr. 5.6

11

SG iron

EN-GJS-400-18-LT

DIN

Cast steel

1.0619+N (GSC 25N)

Steel (DN15 - DN80)

DIN 17243 C 22.8

ANSI

Cast steel

ASTM A 216 WCB

Forged steel (DN15- DN80)

ASTM A 105

Steel M8 x 20 mm

Steel M12 x 20 mm

BSAT

BS 3692 Gr. 8.8

BS 3692 Gr. 8.8

3

4

DN150

shown

Optional balancing disc assembly

25 bar ∆P DN125

Used 17 bar ∆P DN150 6"

above 10 bar ∆P DN200 8"

6 bar ∆P DN250 (BSA2 only)

Optional soft sealing disc

Steel (DN100 - DN200) Cast steel (DN100- DN200)

1.0619+N (GSC 25N)

Stainless steel AISI 420

ASTM A 216 WCB

Steel ASTM A 193 B7

Steel ASTM A 192 2 H

BSA