Product Handbook 2026 - Volume 2

Steam traps Sealed

8

Materials

1

6

5

11

4

USM21 fitted to a PC10HP connector

2

10 9

3 8 7

No.

Part

Material

1 2 3 4 5 6 7 8 9

Body

Stainless steel

ASTM A351 CF8M

Cover

Stainless steel

AISI 316L

Seat

Stainless steel

AISI 316L

Stem

Stainless steel

AISI 410

Bimetal

Nickel alloy

G. Rau H46

Lock-nuts

Stainless steel

AISI 304L

Body/seat gasket

Stainless steel

AISI 316L

Screen

Stainless steel

AISI 304L

8.8 23

Inner gasket

Stainless steel / Graphite filler

Spirally wound AISI 304 strip

10

Outer gasket

Stainless steel / Graphite filler

Spirally wound AISI 304 strip

11

Connector screws

Carbon steel

ASTM A193 B7

TI-P625-04 CMGT Issue 4

Page 3 of 5

USM21 Sealed Bimetallic Steam Trap for use with Pipeline Connectors

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