UK Product Handbook 2026 - Volume 1

Control systems Self-acting controls

4

Materials

1

KC63 flanged

1

4 5

7 3

8

5

2

4

9 6

3

11

8

12

4.5 87

7

9

KA61 screwed and KA63 flanged

10

2

12

No.

Part

Material

1 2 3

Body

Stainless steel

DIN 17445 G-X5 Ni Mo Nb 19-11-2 (WS14581)

Bonnet

Stainless steel

DIN 17440 X5 Cr Ni Mo 17-12-2 (WS14401)

Head

Stainless steel

BS 970 431 S29 ASTM A276 431

DN15 to DN25

Stainless steel

BS 970 431 S29 ASTM A276 431

4

Seat

DN32 to DN40

Stainless steel

BS 3146 ANC2

DN50

Stainless steel

BS 970 431 S29 ASTM A276 431

5 6 7 8

Valve seat gasket

Reinforced exfoliated graphite

Return spring

Stainless steel

BS 2056 302 S26

Pushrod

Stainless steel

Z15 CN 16 02 (BS 970 431 S29)

Bonnet gasket

Reinforced exfoliated graphite

Bonnet nuts

Stainless steel

DIN ISO 3506 A2-80

Stainless steel

DIN ISO 3506 A2-80

DN15 - DN20

M10 x 30

Bonnet studs

9

DN25 - DN40

M10 x 35

DN50

M12 x 35

10

Bellows assembly

Stainless steel

AISI 316L

11

Bellows gasket

Reinforced exfoliated graphite

12

Plunger

Stainless steel

BS 970 431S29 ASTM A276 431

TI-P078-08 CTLS Issue 7

Page 3 of 5

KA61, KA63 and KC63 Stainless Steel Self-acting Control Valves

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