UK Product Handbook 2026 - Volume 2

Pipeline ancillaries Sight glasses

10

Materials

7

DN32 shown having an integral flange Please note that flanges are welded onto the body of the smaller DN15 to DN25 units.

4 6 8

3

5

1

2

No. Part

Material

7.8.19

SGC40

Carbon steel

EN 10213 1.0619+N/ASTM A216 WCB

Body *

1

SGS40

Stainless steel

EN 10213 1.4308/ASTM A351-CF8

* The materials shown for the body are for all available connections and for the DN32 to DN100 integrally flanged units. Please note that flanges are welded onto the body of the smaller DN15 to DN25 units - See flange material below: * Flange material for sizes DN15 to DN25 SGC40 Carbon steel SGS40 Stainless steel

C22.8 according EN 10222-2/A105N according ASTM A105

1.4571 according EN 10222-5/316Ti according ASTM A182

DN15 to DN50

Carbon steel

C22.8 according EN 10222-2/A105N according ASTM A105

10.8 18

SGC40

2

DN65 to DN100 Carbon steel

EN 10213 1.0619+N/ASTM A216 WCB

Cover

SGS40

Stainless steel

EN 10213 1.4308/ASTM A351-CF8

3 4 5

Window

Borosilicate glass

DIN 7080

Gaskets

Reinforced exfoliated graphite (standard) or PTFE Glass filled (optional)

Cover bolts

Stainless steel

EN ISO 3506-1 A2-70

Materials - Optional extras 6 Visual flow indicator flap

Stainless steel

7 8

Spring

Stainless steel

Glass protectors

Mica

TI-P130-28 CMGT Issue 14

Page 2 of 7

SGC40 and SGS40 Sight Glasses

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