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Installation
− The separating piece is installed between
the valve and thermostat to protect the
operating element against excessively
high pressures in the plant. In stainless
steel regulators, it also separates the op-
erating element made free of non-ferrous
metals from the medium in the valve.
− The double adapter allows a further
thermostat or a manual adjuster.
Extension piece
1
Valve
2
Spindle
Fig. 5-5: Accessories · Type 1, Type 4 and Type 4u
5-12
Separating piece
A1 with seals
2
A2 with bellows
2
3
Stem
4
Lever
A thermostat can be changed on site to in-
stall an extension piece, separating piece or
double adapter.
How to proceed:
1. Adjust the highest possible temperature
set point, causing the pin of operating el-
ement to detach itself from the plug stem
of the valve.
2. Unscrew the operating element.
3. Screw extension piece, separating piece
or double adapter onto the valve body.
Remount the operating element.
Double adapter
1
3
4
5
Wooden bolt
6
Washer
Reversing device
7
Coupling nut
8
Spring
EB 2111/2121/2123 EN
1
3
4
5
6
7
8
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