Product Handbook 2026 - Volume 1

44

Control systems Control valves

Operating limit conditions

QL33M and QL33D (cast iron)

Bonnet

Body

Standard

Extended

Bellows

PTFE

Graphite

PTFE

Graphite

PN16

PN25

Pressure (bar)

16 13

16

13

16

13

-

-

-

-

16

13

-

-

Temperature ( °C)

-5/+120 200 -5/+120 200 -5/+120 200

-

-

-

-

-5/+120 200

-

-

QL73M and QL73D (SG iron)

Bonnet

Body

Standard

Extended

Bellows

PTFE

Graphite

PTFE

Graphite

PN16

PN25

Pressure (bar)

25 15 25 18.7 25 18 25 18 25

15

16

11

25

15

Temperature ( °C)

-10/+120 300 -5/+120 232 -5/+120 250 -10/+120 250 -10/+120 300 -10/+120 300 -10/+120 300

QL43M and QL43D (carbon steel)

4.1 114

Bonnet

Body

Standard

Extended

Bellows

PTFE

Graphite

PTFE

Graphite

PN16

PN25

Pressure (bar)

40 21 40 33 40 32 40 32 40

21

16

10 25

16

Temperature ( °C)

-29/+120 400 -5/+120 232 -5/+120 250 -29/+120 250 -29/+120 400 -10/+120 350 -10/+120 350

QL63M and QL63D (stainless steel)

Bonnet

Body

Standard

Extended

Bellows

PTFE

Graphite

PTFE

Graphite

PN16

PN25

Pressure (bar)

40 22.1 40 26.8 40 26.2 40 26.2 40

22

16

10 25

16

Temperature ( °C)

-29/+120 400 -5/+120 232 -5/+120 250 -29/+120 250 -29/+129 400 -10/+120 350 -10/+120 350

Differential pressure For the maximum available differential pressures, see the relevant pneumatic or electrical actuator Technical Information sheets.

TI-P359-14 CTLS Issue 8

Page 2 of 11

QLM and QLD Three-port Control Valves

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