IM-S23-10
3.561.5275.202
CH Issue 2 - 2013
PN7000 and PN8000 Pneumatic Actuators
Installation and Maintenance Instructions
1. PN7000 General information
2. PN8000 General information
3. Installation
4. Commissioning
5. Spare parts
6. Maintenance
E X P E R T I S E
S O L U T I O N S
S U S T A I N A B I L I T Y
© Copyright 1999
ATTENZIONE
Lavorare in sicurezza con apparecchiature
in ghisa e vapore
Working safely with cast iron products on steam
Informazioni di sicurezza supplementari - Additional Informations for safety
Lavorare in sicurezza con prodotti
in ghisa per linee vapore
I prodotti di ghisa sono comunemente presenti
in molti sistemi a vapore.
Se installati correttamente, in accordo alle
migliori pratiche ingegneristiche, sono dispositivi
totalmente sicuri.
Tuttavia la ghisa, a causa delle sue proprietà
meccaniche, è meno malleabile di altri materiali
come la ghisa sferoidale o l’acciaio al carbonio.
Di seguito sono indicate le migliori pratiche
ingegneristiche necessarie per evitare i colpi
d'ariete e garantire condizioni di lavoro sicure
sui sistemi a vapore.
Movimentazione in sicurezza
La ghisa è un materiale fragile: in caso di
caduta accidentale il prodotto in ghisa non è
più utilizzabile. Per informazioni più dettagliate
consultare il manuale d'istruzioni del prodotto.
Rimuovere la targhetta prima di effettuare la
messa in servizio.
Working safely with cast iron
products on steam
Cast iron products are commonly found on steam
and condensate systems.
If installed correctly using good steam
engineering practices, it is perfectly safe.
However, because of its mechanical properties,
it is less forgiving compared to other materials
such as SG iron or carbon steel.
The following are the good engineering practices required to prevent waterhammer and
ensure safe working conditions on a steam
system.
Safe Handling
Cast Iron is a brittle material. If the product is dropped
during installation and there is any risk of damage
the product should not be used unless it is fully
inspected and pressure tested by the manufacturer.
Please remove label before commissioning
Prevenzione dai colpi d’ariete - Prevention of water hammer
Scarico condensa nelle linee vapore - Steam trapping on steam mains:
Intervalli di 30÷50 m. intervals
Penden
za - Gra
Vapore
Steam
dient 1:1
00
Gruppo di scarico
Trap set
Condensa - Condasate
Penden
za - Gra
dient 1:1
Gruppo di scarico
Trap set
Condensa - Condasate
Esempi di esecuzioni corrette ( ) ed errate (
Steam Mains - Do's and Dont's:
Flusso
Flow
Vapore
Steam
00
Flusso
Flow
Vapore
Steam
Gruppo di scarico
Trap set
Condensa - Condasate
) sulle linee vapore:
Prevenzione delle sollecitazioni di trazione
Prevention of tensile stressing
Evitare il disallineamento delle tubazioni - Pipe misalignment:
Installazione dei prodotti o loro rimontaggio post-manutenzione:
Installing products or re-assembling after maintenance:
Evitare l’eccessivo serraggio.
Utilizzare le coppie di serraggio
raccomandate.
Do not over tighten.
Use correct torque figures.
Per garantire l’uniformità del carico e dell'allineamento,
i bulloni delle flange devono essere serrati in modo
graduale e in sequenza, come indicato in figura.
Flange bolts should be gradually tightened across
diameters to ensure even load and alignment.
Dilatazioni termiche - Thermal expansion:
Gli esempi mostrano l’uso corretto dei compensatori di dilatzione. Si consiglia di richiedere una
consulenza specialistica ai tecnici dell’azienda che produce i compensatori di dilatazione.
Examples showing the use of expansion bellows. It is highly recommended that expert advise is
sought from the bellows manufacturer.
Guide
Guides
Movimento assiale
Axial movement
Distanza breve
Short distance
Punto di fissaggio
Fixing point
Movimento assiale
Axial movement
Guide
Guides
Guide
Guides
Tiranti limitatori
Limit rods
Distanza
media
Medium
distance
Piccolo
movimento
laterale
Small
lateral
movement
Ampio
movimento
laterale
Large
lateral
movement
Punto di fissaggio
Fixing point
Tiranti limitatori
Limit rods
Guide
Guides
Piccolo
movimento
laterale
Small
lateral
movement
Ampio
movimento
laterale
Large
lateral
movement
PN7000
PN7000 series,
series, spring
spring extend
extend pneumatic
pneumatic actuators
actuators
Available
types
Available types
Spring extend spindle, single spring, yoke mounted actuators: PN7200, PN7300, PN7400,
Spring extend
spindle,series.
single spring, yoke mounted actuators: PN7200, PN7300, PN7400,
PN7500,
and PN7600
PN7500, and PN7600 series.
Description
Description
A range of compact linear actuators having 5 diaphragm sizes for matching the requirements
A range
of compact
linear
actuators
havingpressures.
5 diaphragm
sizesactuator
for matching
the with
requirements
of
different
valves at
various
differential
Each
is fitted
a stroke
of
different
valves
at various
differential pressures.
is fitted
with over
a stroke
indicator
and
incorporates
a semi-rolling
diaphragm Each
whichactuator
gives good
linearity
the
indicator
and
incorporates
a
semi-rolling
diaphragm
which
gives
good
linearity
over
operating stroke.These actuators are designed to operate with 2-port KE and 3-port the
QL
operating
stroke.These
valves as detailed
below.actuators are designed to operate with 2-port KE and 3-port QL
valves as detailed below.
Actuator type
Actuator type
20 mm travel
20 mm travel
30 mm travel
30 mm travel
50 mm travel
50 mm travel
Technical
Technical data
data
Temperature range
Temperature range
Maximum operating pressure
Maximum operating pressure
Air
Air supply
supply connection
connection
Actuator type
Actuator type
PN7200 to PN7600 series
PN7200 to PN7600 series
Actuator
Actuator capacities
capacities
Actuator type
Actuator type
PN7200 series
PN7200 series
PN7300 series
PN7300 series
PN7400 series
PN7400 series
PN7500 series
PN7500 series
PN7600 series
PN7600 series
Valve type
Valve type
KE and QL series
KE and QL series
KE and QL series
KE and QL series
KE and QL series
KE and QL series
DN15 DN15 DN65 DN65 DN125 DN125 -
DN50
DN50
DN100
DN100
DN200
DN200
-20° to +100°C
-20° to +100°C
2.5 bar g
2.5 bar g
Connection
Connection
¼" NPT
¼" NPT
Travel
Travel
20 mm
20 mm
20 mm
20 mm
20 mm
20 mm
30 mm
30 mm
20 mm
20 mm
30 mm
30 mm
20 mm
20 mm
30 mm
30 mm
50 mm
50 mm
Volume (Litres)
Volume (Litres)
0.6
0.6
1.0
1.0
1.4
1.4
2.1
2.1
2.4
2.4
3.6
3.6
3.8
3.8
5.7
5.7
8.5
8.5
2
3.561.5275.202
2
IM-S23-10 CH Issue 2
Spring ranges
Actuator type
PN7200 series
PN7300 series
PN7400 series
PN7500 series
PN7600 series
Spring range
Travel
PN7220
0.2 (0.4) to 1 (1.2) bar
20 mm
PN7225
0.4 to 2 bar
20 mm
PN7320
0.2 (0.4) to 1 (1.2) bar
20 mm
PN7325
0.4 to 2 bar
20 mm
PN7420
0.2 (0.4) to 1 (1.2) bar
20 mm
PN7425
0.4 to 2 bar
20 mm
PN7430
0.2 (0.4) to 1 (1.2) bar
30 mm
PN7435
0.4 to 2 bar
30 mm
PN7520
0.2 (0.4) to 1 (1.2) bar
20 mm
PN7525
0.4 to 2 bar
20 mm
PN7530
0.2 (0.4) to 1 (1.2) bar
30 mm
PN7535
0.4 to 2 bar
30 mm
PN7620
0.2 (0.4) to 1 (1.2) bar
20 mm
PN7625
0.4 to 2 bar
20 mm
PN7630
0.2 (0.4) to 1 (1.2) bar
30 mm
PN7635
0.4 to 2 bar
30 mm
PN7650
0.2 (0.4) to 1 (1.2) bar
50 mm
PN7655
0.4 to 2 bar
50 mm
3.561.5275.202
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IM-S23-10 CH Issue 2
3
Materials
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
4
Part
Diaphragm housing
Diaphragm
Diaphragm plate
Spring
Spindle
Lock-nut
'O' Ring
Spring setting nut
Spring holder
Fixing screws
Spacer
Travel indicator
Yoke
Gasket
Cap (with vent hole)
Housing (bolts and nuts)
Top adaptor
Lock-nut
Bottom adaptor
Connectors
Connectors (bolts and nuts)
Material
Pressed steel
Reinforced nitrile rubber
Cast iron
Spring steel
Stainless steel
Zinc plated steel
Rubber
Zinc plated steel
Cast iron
Steel
Zinc plated steel
Aluminium
Cast iron
Non asbestos fibre
Plastic
Steel
Steel
Steel
Steel
Stainless steel
Stainless steel
3.561.5275.202
15
6
1
16
3
2
14
7
10
11
4
9
8
5
18
12
21
13
17
20
19
Fig. 1
3.561.5275.202
5
PN8000 series, spring retract pneumatic actuators
PN8000 series, spring retract pneumatic actuators
Available types
Available
Spring retract types
spindle, single spring, yoke mounted actuators: PN8200,
PN8300, PN8400,
Spring retract
spindle, series.
single spring, yoke mounted actuators: PN8200, PN8300, PN8400,
PN8500,
and PN8600
PN8500, and PN8600 series.
Description
Description
A range of compact linear actuators having 5 diaphragm sizes for matching the requirements
A range
of compact
linear
actuators
havingpressures.
5 diaphragm
sizes
for matching
thewith
requirements
of
different
valves at
various
differential
Each
actuator
is fitted
a stroke
of
different
valves
at various
differential pressures.
is fitted
with aover
stroke
indicator
and
incorporates
a semi-rolling
diaphragmEach
whichactuator
gives good
linearity
the
indicator
incorporates
a semi-rolling
diaphragm
which with
gives2-port
goodKE
linearity
over the
operating and
stroke.These
actuators
are designed
to operate
and 3-port
QL
operating
stroke.These
valves as detailed
below.actuators are designed to operate with 2-port KE and 3-port QL
valves as detailed below.
Actuator type
Actuator type
20 mm travel
20 mm travel
30 mm travel
30 mm travel
50 mm travel
50 mm travel
Valve type
Valve type
KE and QL series
KE and QL series
KE and QL series
KE and QL series
KE and QL series
KE and QL series
Temperature range
Temperature range
Maximum operating pressure
Maximum operating pressure
-20° to +100°C
-20° to +100°C
2.5 bar g
2.5 bar g
Actuator type
Actuator type
PN8200 to PN8600 series
PN8200 to PN8600 series
Connection
Connection
¼" NPT
¼" NPT
Technical data
Technical data
Air supply connection
Air supply connection
Actuator capacities
Actuator
capacities
Actuator type
Actuator type
PN8200 series
PN8200 series
PN8300 series
PN8300 series
PN8400 series
PN8400 series
PN8500 series
PN8500 series
PN8600 series
PN8600 series
6
6
Travel
Travel
20 mm
20 mm
20 mm
20 mm
20 mm
20 mm
30 mm
30 mm
20 mm
20 mm
30 mm
30 mm
20 mm
20 mm
30 mm
30 mm
50 mm
50 mm
DN15
DN15
DN65
DN65
DN125
DN125
-
DN50
DN50
DN100
DN100
DN200
DN200
Volume (Litres)
Volume (Litres)
0.6
0.6
1.0
1.0
1.4
1.4
2.1
2.1
2.4
2.4
3.6
3.6
3.8
3.8
5.7
5.7
8.5
8.5
3.561.5275.202
IM-S23-10 CH Issue 2
Spring ranges
Actuator type
PN8200 series
PN8300 series
PN8400 series
PN8500 series
PN8600 series
PN8220
PN8225
PN8320
PN8325
Spring range
0.2 to 1 bar
0.4 to 2 bar
0.2 to 1 bar
0.4 to 2 bar
Travel
20 mm
20 mm
20 mm
20 mm
PN8420
PN8425
PN8430
PN8435
PN8520
PN8525
PN8530
PN8535
PN8620
PN8625
PN8630
PN8635
PN8650
PN8655
0.2
0.4
0.2
0.4
0.2
0.4
0.2
0.4
0.2
0.4
0.2
0.4
0.2
0.4
20
20
30
30
20
20
30
30
20
20
30
30
50
50
to
to
to
to
to
to
to
to
to
to
to
to
to
to
1
2
1
2
1
2
1
2
1
2
1
2
1
2
bar
bar
bar
bar
bar
bar
bar
bar
bar
bar
bar
bar
bar
bar
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
3.561.5275.202
7
IM-S23-10 CH Issue 2
7
Materials
No Part
1 Diaphragm housing
2 Diaphragm
3 Diaphragm plate
4 Spring
5 Spindle
6 Lock-nut
8 Spring setting nut
9 Spring holder
10 Fixing screws
12 Travel indicator
13 Yoke
14 Gasket
15 Cap (with vent hole)
16 Housing (bolts and nuts)
17 Top adaptor
18 Lock-nut
19 Bottom adaptor
20 Connectors
21 Connectors (bolts and nuts)
8
8
Material
Pressed steel
Reinforced nitrile rubber
Cast iron
Spring steel
Stainless steel
Zinc plated steel
Zinc plated steel
Cast iron
Steel
Aluminium
Cast Iron
Non asbestos fibre
Plastic
Steel
Steel
Steel
Steel
Stainless steel
Stainless steel
3.561.5275.202
IM-S23-10 CH Issue 2
6
16
3
2
1
14
10
15
4
5
9
8
18
17
21
12
20
13
19
Fig. 2
3.561.5275.202
IM-S23-10 CH Issue 2
9
9
See also separate Installation and Maintenance Instructions for the control valves.
See also separate Installation and Maintenance Instructions for the control valves.
The actuators should be installed in such a position as to allow full access to both actuator and
valve
for maintenance
purposes.
preferred
mounting
with the
and valve
The actuators
should be
installedThe
in such
a position
as to position
allow fullisaccess
toactuator
both actuator
and
spindle
the vertical position
above
below the
horizontal
pipework.
valve
forinmaintenance
purposes.
The or
preferred
mounting
position
is with the actuator and valve
The actuator
areabove
-20°Cor
to below
+100°C.
low temperature
spindle
in theambient
vertical limits
position
theFor
horizontal
pipework.conditions the air supply
must
be dry. For
high temperature
conditions,
insulate
thetemperature
control valveconditions
and pipework
to protect
The actuator
ambient
limits are -20°C
to +100°C.
For low
the air
supply
the actuator.
must
be dry. For high temperature conditions, insulate the control valve and pipework to protect
the actuator.
Warning
The actuator housing must only be pressurized on the opposite side of the diaphragm
Warning
to
springs.
The housing
ventbe
cap
must be left
Thethe
actuator
housing
must only
pressurized
on unrestricted.
the opposite side of the diaphragm
2.1
Fitting
to cap
themust
valve
to the
springs.the
Theactuator
housing vent
be left unrestricted.
2.1 Fitting the actuator to the valve
PN7000 (refer to figures 3a, 3b and 3c)
Loosen
and(refer
remove
and nuts (21) and remove connectors (20).
PN7000
to connectors
figures 3a, locking
3b and screws
3c)
Fit
the valve
(19) locking
onto thescrews
valve spindle
and(21)
pushand
theremove
valve plug
manually(20).
to its
Loosen
and spindle
removeadaptor
connectors
and nuts
connectors
closed
position.
Fit the valve
spindle adaptor (19) onto the valve spindle and push the valve plug manually to its
Adjust the
distance of the adaptor (19) from the bonnet shoulder at the value indicated in Table1.
closed
position.
Apply
signal
required
theshoulder
spindle to
mid-travel
position.
Adjustthe
the control
distance
of thepressure
adaptor (19)
from to
thebring
bonnet
at the
the value
indicated
in Table1.
Place
yoke
overpressure
valve spindle
and to
locate
bonnet
shoulder.
Locate andposition.
tighten valve
Apply actuator
the control
signal
required
bringonthe
spindle
to the mid-travel
mounting
nut toyoke
the over
right valve
torquespindle
(see Table
1). on bonnet shoulder. Locate and tighten valve
Place actuator
and locate
Release the
air signal.
theTable
connectors
(20) across the adaptors (17) and (19).
mounting
nutcontrol
to the right
torqueFit
(see
1).
Fit
connectors
locking
nutsconnectors
(21) and tighten
to 2 Nthe
m.adaptors (17) and (19).
Release
the control
airscrews
signal. and
Fit the
(20) across
Follow
the spring
adjust
procedure
as described
Section
Fit
connectors
locking
screws
and nuts
(21) and in
tighten
to 24.N m.
Follow the spring adjust procedure as described in Section 4.
PN8000 (Refer to figures 3a, 3b and 3c)
Loosen
and(Refer
removetoconnector
locking
screws
PN8000
figures 3a,
3b and
3c) and nuts (21) and remove connector (20).
Fit the valve
(19)locking
onto the
valve and
spindle
push
valve plug
manually
to its
Loosen
and spindle
removeadaptor
connector
screws
nutsand
(21)
andthe
remove
connector
(20).
closed
position.
Fit the valve
spindle adaptor (19) onto the valve spindle and push the valve plug manually to its
Adjust the
distance of the adaptor (19) from the bonnet shoulder at the value indicated in Table 1.
closed
position.
Place
yokeofover
spindle
and the
locate
on bonnet
shoulder.
Locate
and tighten
valve
Adjustactuator
the distance
the valve
adaptor
(19) from
bonnet
shoulder
at the value
indicated
in Table
1.
mounting
nut toyoke
the over
right valve
torquespindle
(see Table
1). on bonnet shoulder. Locate and tighten valve
Place actuator
and locate
Apply the nut
control
air right
signal
to bring
the
actuator
mounting
to the
torque
(see
Table
1). spindle against the valve spindle.
Fit
thethe
connector
(20)
across
the adaptors
(17) spindle
and (19).
Apply
control air
signal
to bring
the actuator
against the valve spindle.
Fit
locking
(21) and
to 2 N m. Release the control air signal.
Fit connector
the connector
(20)screws
acrossand
thenuts
adaptors
(17)tighten
and (19).
Follow
the spring
adjust
procedure
as (21)
described
in Section
Fit connector
locking
screws
and nuts
and tighten
to 2 N4.m. Release the control air signal.
Follow the spring adjust procedure as described in Section 4.
Table 1 refer to figure 3a
Table 1 refer to figure 3aDimension 'A' Mounting nut
Mounting size
Actuator type Travel
(mm) 'A'
Size nut
tightening
torque
Dimension
Mounting
Mounting
size (N m)
Actuator type Travel
(mm)
Size
tightening
(N m)
PN7200 series 20 mm
100
M30
15 -torque
20
PN7200
PN7300 series
PN7300 series
PN7400 series
PN7400 series
PN7500 series
PN7500 series
PN7600 series
PN7600 series
10
10
20 mm
20 mm
20 mm
30
30
20 mm
20 mm
30
30 mm
20
20
30 mm
30 mm
50
50 mm
100
100
130
130
140
140
140
150
150
140
140
150
150
150
M30
M30
M30
M50
M50
M30
M30
M50
M50
M30
15 - 20
15 - 20
15 - 50
20
45
45
15
15
45
-
50
20
20
50
M30
M50
M50
M70
45 - 20
50
15
15
45 - 20
50
45 - 70
50
65
M70
65 - 70
3.561.5275.202
IM-S23-10 CH Issue 2
18
17
Mid travel
➤
20
19
A
➤
Mounting nut
Fig. 3a
Fig. 3b
20
21
21
Fig. 3c
3.561.5275.202
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IM-S23-10 CH Issue 2
11
If the actuator / valve has been supplied with a positioner, reference should be made to the
separate
Installation
Instructions
for this product.
If the actuator
/ valve and
has Maintenance
been supplied
with a positioner,
reference should be made to the
separate Installation and Maintenance Instructions for this product.
4.1 Adjusting spring
The actuator
spring range
and lift off pressure will be indicated on the nameplate. Should it be
4.1
Adjusting
spring
necessary
to spring
check range
or adjust
pressure
is the
descibed
in paragraphs
The actuator
andthe
lift lift
off off
pressure
willthe
be procedure
indicated on
nameplate.
Should it4.2
be
and 4.3. to check or adjust the lift off pressure the procedure is descibed in paragraphs 4.2
necessary
and
4.3.
Important
To prevent damage to the valve seat, please ensure the plug does not turn while pressing on
Important
the
seat during
assembling
or adjustment.
To prevent
damage
to the valve
seat, please ensure the plug does not turn while pressing on
To prevent
damage
to the diaphragm
ensure the actuator spindle is not allowed to rotate
the
seat during
assembling
or adjustment.
when
the diaphragm
housing.
To prevent
damage to is
theassembled
diaphragmwithin
ensureits
the
actuator spindle is not allowed to rotate
when the diaphragm is assembled within its housing.
4.2 PN7000 spring extend actuators
Note: PN7000
Adjustment of
the spring
will only alter
the pressure of the control signal air at which the valve
4.2
spring
extend
actuators
commences
to move
offspring
its seat
andpressure
will not alter
spring
pressure
range the
required
Note: Adjustment
of the
will(set
onlypoint)
alter the
of thethe
control
signal
air at which
valve
to move the valve
through
full travel.
i.e. 0.2
1.0not
baralter
spring
bar) setrange
to commence
commences
to move
off itsitsseat
(set point)
andtowill
the(range
spring0.8
pressure
required
lift at 0.4
willthrough
requireits
a 1.2
bar air i.e.
pressure
(0.4bar
+ 0.8)
to obtain
full set
travel.
to move
thebar
valve
full travel.
0.2 to 1.0
spring
(rangevalve
0.8 bar)
to commence
to
lift
at
0.4
bar
will
require
a
1.2
bar
air
pressure
(0.4
+
0.8)
to
obtain
valve
full
travel.
To adjust set point refer to fig. 1 and proceed as follows:Ensure
theset
control
has
isolated
and
actuator housing is pressure free.
To
adjust
point valve
refer to
fig.been
1 and
proceed
asthe
follows:Ensure
the
control
valve
has
been
isolated
and
the
actuator
housing
is pressure
free. spindle.
Increase the control signal pressure until the actuator
commences
lifting
the actuator
Check
whether
the signal
to thecommences
desired starting
Increase
the control
signal pressure
pressure corresponds
until the actuator
liftingvalue.
the actuator spindle.
Check
whether
the
signal
pressure
corresponds
to
the
desired
starting
value.
Release completely the air signal pressure.
Tighten
slightly
thesignal
springpressure.
set nut to increase (decrease) the actual signal pressure
Release(loosen)
completely
the air
starting
Tighten value.
(loosen) slightly the spring set nut to increase (decrease) the actual signal pressure
starting
Recheckvalue.
that the valve just commences to move off its seat at the right spring range minimum
pressure
and the
is fully
open
the spring range
maximum
pressure.
Recheck that
valve
justat
commences
to move
off its seat
at the right spring range minimum
After the test
position
the travel
indicator
against
the "arrow" of the connector and
pressure
and check
is fullythe
open
at theofspring
range
maximum
pressure.
adjust
its test
position
After the
checkaccordingly.
the position of the travel indicator against the "arrow" of the connector and
adjust its position accordingly.
4.3 PN8000 spring retract actuators
Note: PN8000
Adjustment of
the spring
will only alter
the pressure of the control signal air at which the valve
4.3
spring
retract
actuators
commences
to move
offspring
its seat
(set
point)
will not alter
thecontrol
springsignal
pressure
to
Note: Adjustment
of the
will
only
alter and
the pressure
of the
air atrange
whichrequire
the valve
move the valve
through
travel.
i.e. 0.2and
to 1.0
(range
0.8pressure
bar) set to
commence
commences
to move
offits
itsfull
seat
(set point)
willbar
notspring
alter the
spring
range
require to
lift at 0.4
willthrough
requireits
a 1.2
bar air i.e.
pressure
(0.4bar
+ 0.8)
to obtain
full set
travel.
move
thebar
valve
full travel.
0.2 to 1.0
spring
(rangevalve
0.8 bar)
to commence to
lift
0.4 bar
require
air pressure
+ 0.8) to obtain valve full travel.
To at
adjust
setwill
point
referato1.2
fig.bar
2 and
proceed (0.4
as follows:Ensure
theset
control
has
isolated
and
actuator housing is pressure free.
To
adjust
point valve
refer to
fig.been
2 and
proceed
asthe
follows:Ensure
thecontrol
controlsignal
valve pressure
has beenrequired
isolated to
and
the actuator
housing
free.spindle.
Apply the
complete
the full
travel is
ofpressure
the actuator
Apply
control
to complete
the full travel
of the
actuator spindle.
Check the
whether
thesignal
signalpressure
pressurerequired
corresponds
to the desired
full travel
value.
Check whether
the signal
corresponds to the desired full travel value.
Release
completely
the airpressure
signal pressure.
Tighten (loosen)
slightly
spring pressure.
set nut to increase (decrease) the actual signal pressure full
Release
completely
the the
air signal
travel
value.
Tighten
(loosen) slightly the spring set nut to increase (decrease) the actual signal pressure full
travel
value.
Release
the air control pressure and recheck that the valve just commences to move toward
the
seatthe
at the
right spring
range
minimum
and isjust
fullycommences
closed at the
springtoward
range
Release
air control
pressure
and
recheckpressure
that the valve
to move
maximum
the
seat atpressure.
the right spring range minimum pressure and is fully closed at the spring range
maximum
pressure.
After the test
check the position of the travel indicator against the "arrow" of the connector and
adjust
its test
position
After the
checkaccordingly.
the position of the travel indicator against the "arrow" of the connector and
adjust its position accordingly.
12
12
3.561.5275.202
IM-S23-10 CH Issue 2
Table 2: PN7000 / PN8000 spring details
Actuator
type
Spring
Range
Travel
Number Ins. Dia. Length Identification
of springs (mm)
(mm) (Vertical stripe)
PN7220 / PN8220 0.2 to 1 bar
20 mm
1
41.0
102
Black
PN7225 / PN8225 0.4 to 2 bar
20 mm
1
41.0
102
Yellow
PN7320 / PN8320 0.2 to 1 bar
20 mm
1
44.5
165
Black
PN7325 / PN8325 0.4 to 2 bar
20 mm
1
44.5
165
Yellow
PN7420 / PN8420 0.2 to 1 bar
20 mm
1
44.5
210
Black
PN7425 / PN8425 0.4 to 2 bar
20 mm
1
44.5
210
Yellow
PN7430 / PN8430 0.2 to 1 bar
30 mm
1
44.5
210
Black
PN7435 / PN8435 0.4 to 2 bar
30 mm
1
44.5
210
Yellow
PN7520 / PN8520 0.2 to 1 bar
20 mm
1
57.5
285
Black
PN7525 / PN8525 0.4 to 2 bar
20 mm
1
57.5
285
Yellow
PN7530 / PN8530 0.2 to 1 bar
30 mm
1
57.5
285
Black
PN7535 / PN8535 0.4 to 2 bar
30 mm
1
57.5
285
Yellow
PN7620 / PN8620 0.2 to 1 bar
20 mm
1
57.5
285
Black
PN7625 / PN8625 0.4 to 2 bar
20 mm
1
57.5
285
Yellow
PN7630 / PN8630 0.2 to 1 bar
30 mm
1
57.5
285
Black
PN7635 / PN8635 0.4 to 2 bar
30 mm
1
57.5
285
Yellow
PN7650 / PN8650 0.2 to 1 bar
50 mm
1
57.5
285
Black
PN7655 / PN8655 0.4 to 2 bar
50 mm
1
57.5
285
Yellow
3.561.5275.202
13
IM-S23-10 CH Issue 2
13
The spare parts available are indicated by capital letters. The other parts are not supplied as spares.
Available spares
The spare parts available are indicated by capital letters. The other parts are not supplied as spares.
Stem
seal parts
kit (not
for PN8000)
A
The spare
available
are indicated by capital letters. The other parts are not supplied as spares.
Available
spares
Diaphragm
kit
(diaphragm,
'O'
ring)
A,
B
Available spares
Stem
seal
kit (not
for PN8000)
A
Travel
indicator
kit
C
Stem seal kit (not for PN8000)
A
Diaphragm
(diaphragm, 'O' ring)
A, B
Spring
kit kit
D
Diaphragm
kit (diaphragm, 'O' ring)
A, B
Travel
indicator
kit
CI
Linkage
kit
(Lock-nut,
top
adaptor,
bottom
adaptor,
connectors,
bolts
and
nuts)
E,
F,
G,
H,
Travel indicator kit
C
Spring kit
D
Spring
D
How
tokit
order
Linkage
kit (Lock-nut,
adaptor,
bottom adaptor,
connectors,
bolts
and nuts)
F, G,
H, I
Always
spares bytop
using
the description
in the column
headed
'Available
spare'E,
stating
Linkageorder
kit (Lock-nut,
top
adaptor,
bottom adaptor,
connectors,
bolts
and nuts)
E,and
F, G,
H, I
the actuator
type.
How
to order
Example:
1 -spares
Stem seal
kit for
pneumatic
actuator.
How toorder
order
Always
by using
thePN7220
description
in the column
headed 'Available spare' and stating
Always
ordertype.
spares by using the description in the column headed 'Available spare' and stating
the
actuator
the actuator
Example:
1 - type.
Stem seal kit for PN7220 pneumatic actuator.
Example: 1 - Stem seal kit for PN7220 pneumatic actuator.
B
A
A
A
A
A
A
B
B
D
D
D
E
F
C
EE
CC
G
H,FI
F
H,
H, II
GG
Table 2
Recommended tightening torques
Housing bolts (16)
Torque N m
Housing
bolts
(16)
Housing
(16)
M6
5bolts
+/- 0.5
Size
Torque
N
m
Size
Torque
N
M10
15 +/- 2 m
M6
55 +/M6
+/- 0.5
0.5
Actuator2series
Table
Table 2 Recommended
Recommended tightening
tightening torques
torquesSize
PN7200
/ PN8200
Actuator
series
Actuator
series
PN7300 / PN8300 to PN7600 / PN8600
PN7200
PN7200/ PN8200
/ PN8200
PN7300
PN7300/ PN8300
/ PN8300totoPN7600
PN7600/ /PN8600
PN8600
14
14
14
14
M10
M10
15
15 +/+/- 22
Lock-nut (6)
Size Torque N m
Lock-nut
Lock-nut40(6)
(6)
M12
+/- 3
Size
Torque
N
Size
Torque
N 3m
m
M12
40 +/M12
40
M12
40 +/+/- 3
3
M12
40
M12
40 +/+/- 3
3
IM-S23-10 CH Issue 2
3.561.5275.202
IM-S23-10
IM-S23-10 CH Issue 2
The PN7000 and PN8000 series pneumatic actuators are maintenance free. To ensure
satisfactory
operation
it is strongly
recommended
the control
air is filtered
andTo
supplied
The PN7000
and PN8000
series
pneumatic that
actuators
aresignal
maintenance
free.
ensure
free
of oil andoperation
water. it is strongly recommended that the control signal air is filtered and supplied
satisfactory
Should
necessary
free of itoilbeand
water. to replace spare parts the following procedure should be used.
Should it be necessary to replace spare parts the following procedure should be used.
6.1 Removing actuator from valve
6.1 actuator
Removing
actuatormid-travel
from valve
Drive
into approximately
position with the air supply. Loosen and remove
connectors
nuts into
andapproximately
screws (21) and
removeposition
connectors
(20).air supply. Loosen and remove
Drive actuator
mid-travel
with the
Loosen
and remove
yoke
monting
lift actuator
off the(20).
valve.
connectors
nuts and
screws
(21)nut
andand
remove
connectors
Reduce
pressure
until housing
air supply from the
Loosen air
andsupply
remove
yoke monting
nut andisliftpressure
actuator free.
off theDisconnect
valve.
actuator.
Reduce air supply pressure until housing is pressure free. Disconnect air supply from the
actuator.
21
21
3.561.5275.202
IM-S23-10 CH Issue 2
20
20
15
15
6.2 PN7000 series
6.2.1 Stem seal kit - How to fit
Remove
from
valve as described in Section 6.1.
6.2 actuator
PN7000
series
Loosen
remove
housing
6.2.1and
Stem
seal kit
- How screws
to fit (16) and remove housing lid (1).
Loosen
top adaptor
(18)
remove
top adaptor
Remove
actuator lock-nut
from valve
as and
described
in Section
6.1. (17).
Loosen
completely
spring
setting
nut (8)
and
holder
(9) and spring (4).
Loosen
and remove
housing
screws
(16)
andremove
removespring
housing
lid (1).
Pulling
diaphragm
/platelock-nut
/spindle
assembly
withdraw
actuator
spindle.
Loosen
top adaptor
(18)
and remove
top adaptor
(17).
Remove
'O'completely
rings (7) taking
not
damage
the groves.
Loosen
spring care
setting
nutto(8)
and remove
spring holder (9) and spring (4).
Pulling
/spindle
assembly
Smear
newdiaphragm
'O' rings /plate
with silicon
grease
andwithdraw
replace. actuator spindle.
Remove
'O'
rings
(7)
taking
care
not
to
damage
the
groves.
Refit actuator spindle taking care not to damage 'O' rings or spindle surface.
Smear new
'O' rings with
grease
replace.
Reassemble
components
in silicon
reverse
order.and
Refit
top housing and securing nuts and bolts (16).
actuator
taking
care not 3toand
damage
'O' rings orasspindle
surface.
RefitRefit
actuator
as spindle
described
in Section
recommission
described
in Section 4.
Reassemble components in reverse order. Refit top housing and securing nuts and bolts (16).
actuator askitdescribed
in fit
Section 3 and recommission as described in Section 4.
6.2.2Refit
Diaphragm
- How to
Loosen
spring setting nut until the spring is completely unloaded.
6.2.2 Diaphragm kit - How to fit
Loosen
andspring
remove
housing
screws
(16) and
remove housing
Loosen
setting
nut until
the spring
is completely
unloaded.lid (1).
Using
two spanners
whilst
holding
actuator
spindle
(5),
loosenlidplate
Loosen
and remove
housing
screws
(16) and
remove
housing
(1). lock-nut (6).
Remove
plate
(3) holding
and diaphragm
(2).
Usingdiaphragm
two spanners
whilst
actuator spindle
(5), loosen plate lock-nut (6).
RefitRemove
new diaphragm
taking
thatdiaphragm
the outer (2).
holes are aligned with the corresponding holes
diaphragm
platecare
(3) and
of the
bottom
housing. Refit
diaphragm
plate
andare
thealigned
plate lock-nut.
Using two spanners,
Refit
new diaphragm
takingthe
care
that the outer
holes
with the corresponding
holes
whilst
holding
actuator
spindle
tighten
plate lock-nut.
to lock-nut.
Table 1 for
torque
ratings.
of the
bottom
housing.
Refit the
diaphragm
plate and Refer
the plate
Using
two spanners,
Refitwhilst
top housing
and securing
andplate
boltslock-nut.
(16). Refer to Table 1 for torque ratings.
holding actuator
spindlenuts
tighten
Refit
housing
and securing
nuts and bolts
(16).
Note:
Totop
avoid
distortion
of the diaphragm
do not
fully tighten housing bolts until all bolts have
Note:
ToFinal
avoid
distortion should
of the diaphragm
do notout
fully
tightenRefer
housing
bolts until
boltsratings.
have
been
fitted.
tightening
then be carried
evenly.
to Table
1 for all
torque
been fitted. Final tightening should then be carried out evenly. Refer to Table1 for torque ratings.
6.2.3 Spring kit - How to fit
6.2.3 actuator
Spring kit
- How
to fit
Remove
from
valve
as described in Section 6.1.
Remove
actuator lock-nut
from valve
as and
described
in Section
6.1. (17).
Loosen
top adaptor
(18)
remove
top adaptor
Loosen
top
adaptor
lock-nut
(18)nut
and
remove
top adaptor
(17).
Loosen
completely
spring
setting
(8)
and
remove
spring
holder (9) and spring (4).
Loosen completely spring setting nut (8) and remove spring holder (9) and spring (4).
Replace
new
spring.
Reassemble
components
in
reverse
order.
Replace new spring. Reassemble components in reverse order.
RefitRefit
actuator
as as
described
in in
Section
as described
describedininSection
Section4.4.
actuator
described
Section3 3and
andrecommission
recommission as
6 6
16 16
11
3 3
22
7 7
4
9
4
9
8
8 5
5 18
18
16
16
16
17
17
IM-S23-10 CH Issue 2
3.561.5275.202
IM-S23-10 CH Issue 2
6.3.1 Diaphragm Kit - How to fit
Remove actuator from valve as described in Section 6.1.
Loosen top adaptor lock-nut (18) and remove top adaptor (17).
Loosen completely spring setting nut (8).
Loosen
and remove
housing screws (16) and remove housing lid (1).
6.3 PN8000
Series
Remove diaphragm (2).
6.3.1
Diaphragm
Kit
- How to fit
Replace new diaphragm.
Remove
actuator and
fromsecuring
valve asnuts
described
in Section 6.1.
Refit
top housing
and bolts.
Loosen top adaptor lock-nut (18) and remove top adaptor (17).
Loosen
completely
spring
nut (8).
6.3.2
Spring
kit - How
to setting
fit
Loosen and
remove
housing
screws
(16) and
remove6.1.
housing lid (1).
Remove
actuator
from
valve as
described
in Section
Removeand
diaphragm
(2).
Loosen
remove housing
screws (16) and remove housing lid (1).
Replace diaphragm
new diaphragm.
Remove
(2). Using two spanners whilst holding actuator spindle (5), loosen plate
Refit top (6).
housing and securing nuts and bolts.
lock-nut
Remove diaphragm plate (3) and spring (4). Replace new spring.
6.3.2all
Spring
kit - How
to fitorder. Using two spanners, whilst holding actuator spindle tighten
Refit
other items
in reverse
Remove
actuator
from
Section 6.1.
plate
lock-nut.
Refer
to valve
Tableas
1 described
for torque in
ratings.
Loosen
remove
(16)bolts.
and remove housing lid (1).
Refit
topand
housing
andhousing
securingscrews
nuts and
Remove diaphragm (2). Using two spanners whilst holding actuator spindle (5), loosen plate
Note:
To (6).
avoid distortion of the diaphragm do not fully tighten housing bolts until all bolts have
lock-nut
been
fitted.
Final tightening
should
be(4).
carried
out evenly.
Refer to Table 1 for torque rating.
Remove
diaphragm
plate (3)
and then
spring
Replace
new spring.
Refit all other items in reverse order. Using two spanners, whilst holding actuator spindle tighten
plate lock-nut. Refer to Table 1 for torque ratings.
Refit top housing and securing nuts and bolts.
Note: To avoid distortion of the diaphragm do not fully tighten housing bolts until all bolts have
been fitted. Final tightening should then be carried out evenly. Refer to Table 1 for torque rating.
2
6
3
16
2
14
16
10
6
1
3
1
14
10
4
9
5
134
89
18
5
21
17
20
13
8
12
18
19
21
20
12
19
IM-S23-10 CH Issue 2
3.561.5275.202
17
17
17
18
3.561.5275.202
3.561.5275.202
19
REPAIRS
Please contact our nearest Branch Office or Agent, or directly Spirax-Sarco S.r.l.
Via per Cinisello, 18 - 20834 Nova Milanese (MB) - Tel.: 0362 49 17.1 - Fax: 0362 49 17 307
LOSS OF GUARANTEE
Total or partial disregard of above instructions involves loss of any rights to guarantee.
Spirax-Sarco s.r.l. - Via per Cinisello, 18 - 20834 Nova Milanese (MB) - Telefono: +39 0362 49 17.1 - Fax +39 0362 49 17 307/8
3.561.5275.202 CH Issue 2 - 2013.10