Samson 2469, 2430 K Mounting And Operating Instructions
Flow and Temperature Regulator
Type 2469/2430 K
Mounting and
Operating Instructions
EB 3132-2 EN
Edition November 2011
Fig. 1 · Type 2469/2430 K
2 EB 3132-2 EN
Contents
Contents Page
1 Design and principle of operation . . . . . . . . . . . . . . . . . . . . . . 4
2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Mounting position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1.1 Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1.2 Additional installation instructions . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Installing the temperature sensor . . . . . . . . . . . . . . . . . . . . . . . 6
2.2.1 Capillary tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Mounting the thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Set point adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.1 Flow rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.2 Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Maintenance – Replacing parts . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Cleaning or replacing the plug . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 Replacing the diaphragm . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Description of the nameplate . . . . . . . . . . . . . . . . . . . . . . . . 11
7 Customer inquiries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8 Dimensions in mm and weights . . . . . . . . . . . . . . . . . . . . . . 12
CAUTION!
indicates a hazardous situation which, if not
avoided, may result in injury.
NOTICE
indicates a property damage message.
Note: Supplementary explanations, informa
-
tion and tips
Definitions of the signal words used in these instructions
EB 3132-2 EN 3
Safety instructions
General safety instructions
4
The regulator is to be mounted, started up or serviced by fully trained and
qualified personnel only, observing the acceptedindustry codes andpractices.
Make sure employees or third persons are not exposed to any danger.
All safety instructions and warnings in these mounting and operating instruc
tions, particularly those concerning assembly, start-up and maintenance, must
be observed.
4
According to these mounting and operating instructions, trained personnel is
referred to as individuals who are able to judge the work they are assigned to
and recognize possible dangers due to their specialized training, their knowl
edge and experience aswell as their knowledgeof theapplicable standards.
4
The regulator fulfils the requirements of the European Pressure Equipment Di
rective 97/23/EC. Valves with a CE marking have a declaration of conformity
that includes information aboutthe appliedconformity assessment procedure.
The declaration of conformity is available on request.
4
For appropriate operation, make sure that the regulator is only used in areas
where the operating pressure and temperatures do not exceed the operating
values specified in the order that the valve sizing data are based on.
The manufacturer does not assume any responsibility for damage caused by
external forces or any other external influence!
Any hazards that could be caused in the regulator by the process medium, the
operating pressure or by moving parts are tobe preventedby meansof theappropriate measures.
4
Proper shipping and storage are assumed.
Note! Non-electric actuator and valve versions do not have their own potential ig
-
nition source according to the risk assessment stipulated in EN 13463-1:2009,
section 5.2, even in the rare incident of an operating fault. Therefore, such valve
versions do not fall within the scope of Directive 94/9/EC. For connection to the
equipotential bonding system, observe section 6.3 of EN 60079-14:2008
VDE 0165-1.
1 Design and principle of oper
-
ation
The regulator consists of the Type 2469 Valve
with restriction (orifice), seat and plug, the
closing actuator with operatingdiaphragm as
well as the thermostat with set point adjuster,
capillary tube and temperature sensor.
The regulator isdesigned to keep theflow rate
and temperature constant at the adjusted set
point. The valve closes when the controlled
variable increases.
Versions for safety equipment are addition
-
ally equipped with a Type 2403 Safety Ther
mostat to function as safety temperature monitors (FR/TR/STM). They can also be
equipped with a Type 2439 K Safety Thermostat to function as safety temperature limiters
(FR/TR/STL). For further details, refer to the
Mounting and Operating Instructions:
EB 2183 EN for Type 2403 and
EB 2185 EN for Type 2439 K.
The medium flows through the valve in the direction indicated by the arrow on the body.
The flow rate is determined by the area re
leased between the adjustable restriction
(1.2) and the valve plug (3).
The high pressure upstream of the restriction
is transmitted through the attached control
line to the high-pressure side of the actuator.
The low pressure created downstream of the
restriction acts on the low-pressure side of the
operating diaphragm (6.1) through a bore in
the plug.
The differential pressure created by the re
striction is converted into a positioning force
at the operatingdiaphragm. This forceis used
to move the valve plug depending on the
force of the positioning spring (5).
The medium temperature creates a pressure
in the temperature sensor, which is transmit
-
ted through the capillary tube (24) to the op
erating bellows (23) where is it converted into
a positioning force. This force moves the cou
pling rod (8) and thus the valve plug (3) de
pending on the force of the spring (21)
pretensioned by the set point adjuster (22).
The largest signal isused toactuate thevalve.
2 Installation
Choose a place of installation where the per
missible ambient temperature of 80 °C is not
exceeded.
NOTICE
Protect the regulator against frost when it is
used to control freezing process media.
2.1 Mounting position
Install the regulator in a horizontal pipeline
with the actuator and thermostat vertically
suspended (pointing down). Regulators in
DN 15 to 25 can also be installed in vertical
pipelines.
Use the includedconnection nuts with welding
ends to connect the regulator. Make sure the
direction of flow matches the arrow on the
valve body.
2.1.1 Strainer
Install a strainer (SAMSON Type 1NI) up
stream of the regulator to prevent that any
sealing parts, weld spatter and other impuri
ties carried along by the process medium im
pair the proper functioning of the valve,
above all the tight shut-off.
4 EB 3132-2 EN
Design and principle of operation
EB 3132-2 EN 5
Installation
Tightening torques
Nm
10 Coupling nut
20
3 Plug section
DN 15 to 25
DN 32 to 50
70
110
7 Screws
DN 15 to 25
DN 32 to 50
8
18
14
13
12
11
1
1.2
1.1
2
3
4
5
6.2
6.1
7
6
8
10 (20Nm)
20
24
25
21
22
23
Fig. 2 · Sectional drawing
1 Valve body
1.1 Connection nut with
gasket and welding
end
1.2 Restriction (orifice
plate)
2 Seat
3 Plug section with
guide nipple
4 Plug stem
5 Positioning spring
6 Actuator
6.1 Operating diaphragm
6.2 Diaphragm plate
7 Body screws
8 Coupling rod
10 Coupling nut
11 Control line
12 Set point screw
13 Lock nut
14 Cap
20 Control thermostat
21 Spring
22 Set point adjuster
23 Bellows with actuator
stem
24 Capillary tube
25 Temperature sensor
Loading...