Samson 3310/AT Manuale di servizio
Translation of original instructions
EB 8222 EN
Type3310/3278 with positioner
Type3310/AT
Edition December 2016
Type3310/AT and Type3310/3278 Pneumatic Control Valve
Type3310 Segmented Ball Valve
Note on these mounting and operating instructions
These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices.
ÎFor the safe and proper use of these instructions, read them carefully and keep them for
later reference.
ÎIf you have any questions about these instructions, contact SAMSON‘s After-sales Service
Department (aftersalesser[email protected]).
The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
at www.samson.de > Service & Support > Downloads > Documentation.
Denition of signal words
Hazardous situations which, if not avoided,
will result in death or serious injury
Hazardous situations which, if not avoided,
could result in death or serious injury
Property damage message or malfunction
Additional information
Recommended action
DANGER
!
WARNING
!
NOTICE
!
Note
Tip
2 EB 8222 EN
Contents
EB 8222 EN 3
1 General safety instructions.............................................................................5
2 Design and principle of operation ..................................................................6
2.1 Fail-safe position ............................................................................................6
2.1.1 TypeSRP (single-acting version) ......................................................................6
2.1.2 TypeDAP (double-acting version) ....................................................................8
3 Mounting ......................................................................................................8
3.1 Assembling valve and actuator .......................................................................8
3.1.1 Type3310-SRP ..............................................................................................8
3.1.2 Type3310/3278 ...........................................................................................9
3.2 Mounting position ........................................................................................11
3.3 Signal pressure connection ...........................................................................11
4 Operation...................................................................................................12
4.1 Changing the fail-safe action ........................................................................12
5 Servicing.....................................................................................................12
5.1 Removing the actuator from the valve ............................................................12
5.2 Replace the packing .....................................................................................12
5.3 Replacing the seat ring seal ..........................................................................13
5.4 Assembly ....................................................................................................13
5.5 Replacing the segmented ball, shafts and bearings .........................................15
5.5.1 Disassembly ................................................................................................15
5.5.2 Assembly ....................................................................................................15
6 Changing the characteristic..........................................................................17
7 Tools and tightening torques ........................................................................18
7.1 Special tools ................................................................................................18
7.2 Tightening torques ........................................................................................19
7.2.1 Tightening torques for ange bolts .................................................................19
8 Nameplate..................................................................................................21
9 Accessories .................................................................................................22
10 Technical data .............................................................................................23
11 Customer inquiries ......................................................................................23
4 EB 8222 EN
EB 8222 EN 5
General safety instructions
1 General safety instructions
−The control valve must be mounted, started up or serviced by fully trained
and qualied personnel only; the accepted industry codes and practices are
to be observed. Make sure employees or third persons are not exposed to
any danger.
−All safety instructions and warnings given in these mounting and operating
instructions, particularly those concerning installation, start-up and mainte-
nance, must be strictly observed.
−The control valves comply with the requirements of the European Pressure
Equipment Directive 2014/68/EU. Valves with a CE marking have a decla-
ration of conformity, which includes information about the applied conformity
assessment procedure. The declaration of conformity can be viewed and
downloaded at uhttp://www.samson.de.
−To ensure appropriate use, only use the valve in applications where the oper-
ating pressure and temperatures do not exceed the specications used for siz-
ing the valve at the ordering stage. The manufacturer does not assume any
responsibility for damage caused by external forces or any other external
factors.
−Any hazards that could be caused in the valve by the process medium, the
operating pressure, the signal pressure or by moving parts are to be prevent-
ed by taking appropriate precautions.
−Proper shipping and storage are assumed.
−For installation and maintenance, make sure the relevant section of the pipe-
line is depressurized and, depending on the process medium, drained as
well. Depending on the eld of application, allow the valve to cool down or
heat up to reach ambient temperature before starting any work on it.
−When working on the valve, make sure that the pneumatic air supply as well
as the control signal are disconnected to prevent any hazards caused by
moving parts.
6 EB 8222 EN
Design and principle of operation
2 Design and principle of oper-
ation
The pneumatic control valve consists of the
Type3310 Segmented Ball Valve and either
the SAMSON PFEIFFER TypeAT or the
SAMSON Type3278 Pneumatic Rotary
Actuator.
The control valve is designed for both
throttling and on/off service in process
engineering and plants with industrial
requirements. The control valve is suitable for
liquids, vapors and gases at temperatures
from –29 to +220°C and pressure rating of
Class150 and 300.
The segmented ball valve in valve sizes
NPS1 to 12 is available with a soft-seated
or metal-seated ball. The version used is
marked on the nameplate of the valve body
(see section8).
The process medium ows through the valve.
The signal pressure applied to the rotary ac-
tuator determines the position (opening an-
gle) of the segmented ball (8) and thus the
cross-sectional area of ow between the ball
and body (1). The actuator motion is trans-
mitted to the segmented ball valve by a shaft
with square or key drive. The valve shaft (4)
is sealed by a self-adjusting PTFE V-ring
packing (2.3).
2.1 Fail-safe position
2.1.1 TypeSRP (single-acting
version)
The fail-safe position of the control valve up-
on supply air (signal pressure) failure is de-
termined in Type3310/AT (TypeSRP sin-
gle-acting version) by the version used and
in Type3310/3278 by how the rotary actu-
ator is mounted to the valve.
1 Body
2 Packing gland
2.1 Bearing bushing
2.2 Screws
2.3 V-ring packing
2.4 Washer
2.5 Spring
2.6 Washer
2.7 Spacer
3Yoke
3.1 Screws
4Shaft
4.1 Bearing bushing
4.2 Key drive
4.3 Snap ring
5Support shaft
5.1 Bearing bushing
5.2 Threaded pin
5.3 Clamping bolt
5.4 Locking pins
8 Segmented ball
10 Bottom ange
10.1 Flange gasket
10.2 Flange ring
10.3 Flange bolts
11 Retainer
11.1 Screw
11.2 Washer
11.3 Gasket
11.4 Washer
11.5 Metal tubular seal
11.6 Seat ring (metal)
11.7 Support ring
11.8 Seat ring (PTFE)
12 Type AT Actuator
12.1 Stop bolt
12.2 Stop bolt
13 Type3278 Actuator
13.1 Stop bolt
13.2 Stop bolt
EB 8222 EN 7
Design and principle of operation
12.112 13.2 13.1 13
2
2.2
2.1
1
11.3
5.4
5.3
5.1
5.2
58
4.1
4.3
4
2.5
2.6
2.7
2.4
2.3
3.1
3
12.2
4.2
4
10 10.1 10.3 10.2
11.1
11.2
11.4
11.5
11.6
11.7
11.8
11
A
SAMSON PFEIFFER TypeAT Actuator SAMSON Type3278 Actuator
Detail A (seal) is shown in Fig.3.
Note
Fig.1: Sectional drawing of Type3310 Valve
8 EB 8222 EN
Mounting
Fail-close
When the pressure is relieved from the
rotary actuator or the supply air fails, the
actuator springs close the valve. The valve
opens opposing the force of the actuator
springs when the signal pressure increases.
Fail-open
When the pressure is relieved from the
rotary actuator or the supply air fails, the
actuator springs open the valve. The valve
closes opposing the force of the actuator
springs when the signal pressure increases.
2.1.2 TypeDAP (double-acting
version)
The TypeDAP Rotary Actuator (double-act-
ing) has no springs. A dened nal position
is not reached when the supply air fails.
3 Mounting
3.1 Assembling valve and
actuator
3.1.1 Type3310-SRP
Proceed as follows if the valve and actuator
have not been assembled by SAMSON:
In the standard actuator version (SRP =
single-acting with spring return mechanism),
the spring return mechanism is designed to
close clockwise when there is no signal
pressure.
If you require a different direction of rotation
or a double-acting actuator (DAP = double-
acting without spring return mechanism), this
specication must be submitted on ordering
the actuator.
Table1: Type3310-SRP
Fail-safe
position
Springs Characteristic
Fail-close Clockwise Equal percentage
Fail-close Counterclockwise Linear
Fail-open Clockwise Linear
Fail-open Counterclockwise Equal percentage
The square drive allows the actuator to be
mounted on the segmented ball valve offset
at angles of 90° in such a way that it is ei-
ther in the upright or horizontal position to
meet the installation requirements.
Note
EB 8222 EN 9
Mounting
Fail-close
1. Place the segmented ball (8) of the valve
in the CLOSED position (0° angle of ro-
tation).
2. Fasten the yoke (3) to the ange of the
valve shaft using two or four screws (de-
pending on the valve size).
3. If necessary, place the shaft adapter on
the valve shaft. Slide the actuator over
the adapter or valve shaft (4) and fasten
it onto the yoke with four screws.
4. Adjust the stop bolt (12.1 or 12.2 de-
pending on the direction of rotation) to
the point where the valve is completely
closed and align the markings on the
shaft and packing gland.
5. Lock the position of the stop bolt with the
lock nut.
6. Apply a signal pressure to the signal
pressure connection which corresponds
to the number of actuator springs (see
actuator nameplate).
7. Turn the other stop bolt until the segment-
ed ball stops at an opening angle of 90°.
8. Lock the position of the stop bolt with the
lock nut.
Fail-open
1. Place the segmented ball (8) of the valve
in the OPEN position (90° angle of rota-
tion).
2. Fasten the yoke (3) to the ange of the
valve shaft using two or four screws (de-
pending on the valve size).
3. If necessary, place the shaft adapter on
the valve shaft. Slide the actuator over
the adapter or valve shaft (4) and fasten
it onto the yoke (3) with four screws
(3.1).
4. Adjust the stop bolt (12.1 or 12.2 de-
pending on the direction of rotation) to
the point where the valve is completely
open at 90° and align the markings on
the shaft and packing gland.
5. Lock the position of the stop bolt with the
lock nut.
6. Apply a signal pressure to the signal
pressure connection which corresponds
to the number of actuator springs (see
actuator nameplate).
7. Turn the other stop bolt until the segment-
ed ball is completely closed and align the
markings on the shaft and packing
gland.
8. Lock the position of the stop bolt with the
lock nut.
3.1.2 Type3310/3278
If the valve and actuator have not been as-
sembled by SAMSON, mount the actuator
onto the body ange 1 or 2 depending on
the characteristic and fail-safe position.
'1' or '2' is cast on the corresponding side of
the body.
Table2: Type3310/3278
Fail-safe
position
Characteristic Body ange
Fail-close Equal percentage 2
Fail-close Linear 1
Fail-open Equal percentage 1
Fail-open Linear 2
10 EB 8222 EN
Mounting
The four feather key notches on the actuator
shaft arranged every 90° allow the rotary
actuator to be mounted on the segmented
ball valve offset at angles of 90° in such a
way that it is either in the upright or horizon-
tal position to meet the installation require-
ments.
Fail-close
1. Completely undo both stop bolts (13.1
and 13.2) on the rotary actuator. Turn
the stop bolt (13.2) clockwise until the
grooves of the actuator shaft are aligned
with the actuator axis horizontally or ver-
tically.
2. Place the segmented ball (8) of the valve
in the CLOSED position (0° angle of ro-
tation).
3. Fasten the yoke (3) to the ange of the
valve shaft using two or four screws (de-
pending on the valve size).
4. Slide the actuator over the valve shaft (4)
and fasten it onto the yoke (3) with four
screws.
5. Undo the stop bolt (13.2) again.
6. Adjust the stop bolt (13.2) to the point
where the valve is completely closed and
align the markings on the shaft and
packing gland.
7. Apply a supply pressure required for the
spring range (see actuator nameplate) to
the loading pressure connection to open
the valve.
8. Turn the stop bolt (13.1) clockwise until
the segmented ball (8) of the valve is in
the OPEN position (90° angle of rota-
tion).
9. Lock the position of both stop bolts with
the lock nuts.
Fail-open
1. Completely undo both stop bolts (13.1
and 13.2) on the rotary actuator. Turn
the stop bolt (13.1) clockwise until the
grooves of the actuator shaft are aligned
with the actuator axis horizontally or ver-
tically.
2. Place the segmented ball (8) of the valve
in the OPEN position (90° angle of rota-
tion).
3. Fasten the yoke (3) to the ange of the
valve shaft using two or four screws (de-
pending on the valve size).
4. Slide the actuator over the valve shaft (4)
and fasten it onto the yoke (3) with four
screws.
5. Undo the stop bolt (13.1) again.
6. Apply a supply pressure required for the
spring range (see actuator nameplate) to
the loading pressure connection to close
the valve.
7. Adjust the stop bolt (13.1) to the point
where the segmented ball is completely
closed and align the markings on the
shaft and packing gland.
8. Disconnect the supply air from loading
pressure connection.
9. Turn the stop bolt (13.2) clockwise until
the segmented ball (8) of the valve is in
the OPEN position (90° angle of rota-
tion).
10. Lock the position of both stop bolts with
the lock nuts.
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