Control valves

Self-acting controls

Page 11 of 12

Table 8 Control system ancillaries

Mounting options and ancillaries

1" shown

Standard pocket

immersion length (mm)

Size (BSP or NPT)

3⁄4"

1"

Mild steel pocket

longer pocket option

Wall mounting bracket

*

Stainless steel pocket

315

1"

•

•

•

SA122

258

3⁄4"

•

•

•

•

Control system type

SA121

SA123

258

1"

•

•

•

SA128

180

1"

•

•

•

SA422

326

1"

•

SA423

258

1"

1"

Union kit for sensor

immersion without pocket

•

•

•

longer pocket option

Copper pocket

longer pocket option

Brass pocket

longer pocket option

*

*

*

•

•

•

•

•

•

•

Duct fixing kit

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Glass pocket with

bracket and rubber bung

•

•

•

•

•

Twin sensor adaptor

When coupled to a valve

allows operation by

two actuators.

Twin

sensor

adaptor

Twin

sensor

adaptor

•

•

Manual

actuator

•

* Special long pockets are available in lengths from 0.5 m to 1 m.

2-Port Self-acting Temperature Control Valve Selection

for Heating and Cooling Applications

TI-S21-07 CH Issue 1

Page 11 of 12

4.5.12