Product Handbook 2026 - Volume 2

Steam traps Bimetallic

8

Materials

13

1

2

3

SM45 Butt weld version shown illustrating the valve arrangement for the ¾" and 1" sizes.

8

4 5

10 11

9

6

7 12

5.3.25

5

Valve arrangement for the ½" sizes

9 12 7

No.

Part

Material

1 2

Cover

Alloy steel

DIN 17243 13Cr Mo44 (W/S 1.7335)

8.3 40

Locking nut

Stainless steel

BS 970 303 S21

½" - Rau Type RR ¾" - 1" Type 100

3

Thermostatic element

Corrosive resistant bimetal and stainless steel

4 5 6 7 8 9

Strainer screen

Stainless steel

ASTM A240 316L

Valve seat

Stainless steel

BS 970 431 S29

Valve seat gasket

Stainless steel

BS 1449 304 S12

Valve

Stainless steel

BS 970 431 S29

Spring

Stainless steel

BS 2056 302 S26

Body

Alloy steel

DIN 17245 CS 22 Mo4

Cover gasket

Spirally wound stainless steel graphite filled gasket

10

Cover stud

Alloy steel

ASTM A193 Gr. B7

Cover nut

Carbon steel

BS 4882 Gr. 2H

11

Cover washer

Carbon steel

BS 4320 Table 1 Form A

12 13

Seat insert

Stainless steel

BS 970 321 S20

Name-plate

Stainless steel

BS 1449 304 S16

TI-P025-01 CMGT Issue 10

Page 2 of 7

SM45 Bimetallic Steam Trap

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