UK Product Handbook 2026 - Volume 1

Control systems Self-acting controls

4

Materials

SB

SBRA

9 8

6 5 7

3

8

4

2 1

Optional extra bleed hole

2

8

4 3

5 7

1

8 7

4.5 59

6

No.

Part

Material

1 2 3 4 5 6 7 8

Body

Gunmetal

BS 1400 LG2

Valve plug

Stainless steel

BS 970 431 S29

Valve seat ring

Stainless steel

BS 970 431 S29

Valve seat gasket

Copper

BS 2870 C102

Return spring

Stainless steel

BS 2056 302 S26

Stem

Brass

BS 2874 CZ 121

Bonnet

Brass

BS 2872 CZ 122

Bonnet gasket

Reinforced exfoliated graphite

9

Cap

Brass

BS 2872 CZ 122

TI-P044-01 CTLS Issue 11

Page 3 of 5

SB and SBRA Gunmetal Self-acting Temperature Control Valves

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