Control valves

Positioners and controllers

Dimensions (approximate) in mm

A

C

D

E

B

Standard units are available for 20 mm and 30 mm linear travel.

A table showing the combinations of gears is shown below:-

A

B

C

D

E

80

120

15

40

35

RB31 gear identification

Refer to RB31 schematic for gear actuation

Travel

20 mm linear

30 mm linear

Gear A

20

25

Connections

Gear B

100

84

RB11

RB31

Gear A

Gear B

Cable entry

How to order

Example: 1 off Spirax Sarco RB31 switchbox, 20 mm travel with FK27 fixing kit.

Note: when ordering RB31, valve travel must be stated.

A service to provide assembly and calibration of switchboxes to

Cable entry

the valve / actuator of your choice is available. Please specify when ordering.

RB11

RB31

Spare parts available

V3 microswitch

Baseplate c/w V3 microswitches and terminal strip

Potentiometer

Baseplate c/w potentiometer and terminal strips

RB11 and RB31 Switchboxes

TI-P370-02 CH Issue 4

4.4.2

C

O

M

.

N

C

N

O

N

O

N

C

C

O

M

.

N

o

t

u

s

e

d

S

w

e

e

p

Z

e

r

o