UK Product Handbook 2026 - Volume 1

Control systems Self-acting controls

4

Table 8 Control system ancillaries

Control system type SA121 SA122 SA128

Mounting options and ancillaries

1" shown

Standard pocket immersion length (mm)

315

258

258

Size (BSP or NPT)

1"

¾"

1"

Wall mounting bracket

¾"

1"

Union kit for sensor immersion without pocket

Duct fixing kit

Twin sensor adaptor When coupled to a valve allows operation by two actuators

4.5 13

Twin sensor adaptor

Twin sensor adaptor

Manual actuator

Manual actuator When coupled to a valve, it enables the valve to be manually operated.

Manual actuator

Manual actuator

TI-S21-07 CTLS Issue 6

Page 13 of 13

2-Port Self-acting Temperature Control Valve Selection for Heating and Cooling Applications

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