Samson EB 2111 - Accessories

EB2111/2121/2123 EN 3-3
Design and principle of operation
3.1 Accessories
Î See Fig.3-2
Version with double adapter
The temperature regulator can be equipped
with a double adapter to connect an addi-
tional control thermostat to control a further
control variable.
See Data Sheet uT2036.
Version with handwheel
For the manual operation of the valve. The
manual adjuster can either be attached di-
rectly to the valve or at the double adapter
instead of a control thermostat.
See Data Sheet uT2036.
Extension piece
An extension piece is installed between valve
and thermostat to protect the operating ele-
ment against high temperatures.
Type1:DN15to50for220°Candhigher;
withType2212STL/Type2213STM:with
valve made of spheroidal graphite iron and
castironfor150°Candhigher.
Type 4:DN15to100for220°Candhigh-
er,DN125to250for220°Candhigher
already mounted to the valve, up to max.
350°C.
Separating piece
Mounted between the operating element and
valve. It protects the operating element
againstoverallpressuresabove16bar.In
stainless steel regulators, it separates the op-
erating element made free of non-ferrous
metals from the medium in the valve. In ad-
dition, it prevents the medium from escaping
on removing the thermostat.
Version A1:thespindle(2)isttedwith
O-rings and seals the operating element
against the process medium.
Version A2: a metal bellows is used as a
sealing element.
The Type1, Type4 and Type4u Regulators
are not safety valves. If necessary, a suitable
overpressure protection must be installed on
site in the plant section.
Table 3-1: Design of Type1 and Type4
Temperature
regulator
Valve Thermostat
Type1 Type2111
Type2231to
Type2235
Type4 Type2422
Type4u
Type2422with
reversing device
Note
1 Valve body
2 Seat
3 Plug
4 Bottom section
4.1 Balancing bellows
5 Plug stem
5.1 Spring
6
Threaded connection for
operating element
7 Couplingnut
8 Operating element
9 Pin of operating element
10 Operating bellows
11 Capillarytube
12.1 Set point adjustment key
12.2 Set point adjuster
13 Set point dial
14 Spindle
15 Excess temperature protection
16 Couplingnut
17 Double nipple
18 Piston
19 Thermostat with bulb sensor