CAPPING VALVE
Series PZ
Installation, Maintenance and
Operating Instructions
8 PZ 70 en • 5/2018
2 8 PZ 70 en
Table of Contents
1 GENERAL ..............................................................3
1.1 Scope of the manual ...........................................3
1.2 Valve construction ................................................ 3
1.3 Valve markings ......................................................3
1.4 Specifications .........................................................3
1.5 Valve performance ............................................... 4
1.6 Valve approval .......................................................5
1.7 Recycling and disposal ....................................... 5
1.8 Safety precautions ............................................... 5
2 TRANSPORTATION, RECEPTION AND
STORAGE ..............................................................5
3 INSTALLATION AND COMMISSIONING ..............5
3.1 General ..................................................................... 5
3.2 Mounting the valve on the digester ..............6
3.3 The actuator .......................................................... 6
3.4 Commissioning ..................................................... 6
4 MAINTENANCE .................................................... 6
4.1 General .....................................................................6
4.2 Changing the gland packing ............................ 6
4.3 Bearings (5, 22) ......................................................7
4.4 Body joint ................................................................. 7
4.5 Ball and seating ..................................................... 7
4.6 Dismantling the valve .........................................7
4.7 Valve assembly ......................................................8
5 INSTALLING THE ACTUATOR.............................. 9
5.1 Adjusting open and closed positions ...........9
6 TOOLS ................................................................ 11
7 ORDERING SPARE PARTS ..................................11
8 EXPLODED VIEW AND PARTS LIST ...................12
9 REAR TILTING DEVICE .......................................13
10 SAFETY INTERLOCKING
(JAMMER, REAR TILTING DEVICE) ....................14
11 DIMENSIONS...................................................... 15
12 TYPE CODE .........................................................16
READ THESE INSTRUCTIONS FIRST!
These instructions provide information about safe handling and operation of the valve.
If you require additional assistance, please contact the manufacturer or manufacturer's representative.
Addresses and phone numbers are printed on the back cover.
SAVE THESE INSTRUCTIONS!
Subject to change without notice.
All trademarks are property of their respective owners.
8 PZ 70 en 3
1 GENERAL
1.1 Scope of the manual
This manual provides the essential information needed by
users of PZ capping valves. If you require further information on actuators and instrumentation, see the separate
installation, maintenance and operation instructions for the
various models.
1.2 Valve construction
The PZ is a capping valve designed for use in batch digesters. The valve is fitted to the digester from the lower body
flange.
The upper body half has a metal seat into which the ball is
pressed by a mechanical tilting device when the digester is
not pressurized. The tilting device is pre-tightened during
installation, and no adjustments are required during operation. The pressure of the digester further tightens the seal
provided by the tilting device.
Fig. 2 B1CP
Actuator equipped with automatic latching device
for closed position.
Design is made mainly for actuator locking device
of capping valve.
No free motion.
Fig. 1 PZ and B1C
The mounting holes for the chip feeding chute are in the
top flange plane of the valve.
The ball and stem are integrally cast. The hard-chromed ball
surface ensures low friction and high corrosion resistance.
The full-bore ball and the flow port’s liner insert allow
smooth passage of the chips.
Optionally there are electrical or mechanical interlocking
devices available.
The electrical interlocking device consists of pressure transmitters (2 pcs.), relays, solenoid valves and limit switches.
See the application report no: 2611/01/02en * 12/2011,
Safety interlocking system, "ACC".
The mechanical interlocking device B1CP is based on a
spring-return cylinder which operates a lever inside the
actuator. This lever locks the valve in the closed position.
These devices prevent the valve from opening while the
digester is pressurized.
1.3 Valve markings
The valve has an identification plate (Fig. 2). The upper
body half is marked with the pressure rating, nominal size,
batch number, body material and manufacturer’s code.
Fig. 3 Identification plate
Identification plate markings are:
1. Body material
2. Ball material
3. Stem material
4. Seat material
5. Maximum operating temperature
6. Minimum operating temperature
7. Maximum shut-off pressure differential/temperature
8. Type designation
9. Valve manufacturing parts list no.
10. Pressure class
1.4 Specifications
Product type: Full-bore ball valve
Ball and stem integrally cast
Split-body design
Metal-seated
Custom-fit lower flange
Body pressure class: PN 16 and ANSI 150
Size range: DN 500, 600 and 750
NPS 20", 24" and 30"
4 8 PZ 70 en
Max. temperature: +200 °C / 390 °F
Flanges: To order
Standard materials:
Body halves: ASTM A 351 gr. CF8M
Ball: ASTM A 351 gr. CF8M +
hard-chrome
Bearings: Hard-chromed PTFE +
UNS S21800
Seat: AISI 316 + cobalt based alloy
1.5 Valve performance
Actuators are factory set for proper opening times.
1.5.1 Operation time
During start-up or other exceptional circumstances, capping valves must meet extreme conditions where pressure,
impurities and high operational velocities can cause material damages (ball / seat ring). Therefore PZ capping valves
have a recommended minimum operation time for 90°
rotation as listed:
Valve size Adjusted operating time with 6 bar supply
pressure, B1C actuator
PZ 500 (20”)
PZ 600 (24”) 24 seconds
PZ 750 (30”) 30 seconds
Adjusted operating times are factory preset values, obtained
with restrictor valves installed in actuator air supply lines
between solenoid valve and actuator cylinder.
Fig. 4 Speed control
20 seconds
1.5.2 Vacuum during cooking
In modern cooking processes there can be sequences
where digester vessel operates below atmospheric pressure
ie. in vacuum conditions.
In such cases it is recommended not to exceed 30 kPa (0.3
bar) vacuum with PZ capping valve.
If higher values are expected, please contact the manufacturer. See also Section 1.5.5.
1.5.3 Valve tightness
All PZ capping valves are factory tested to fulfill ISO 5208
rate D leakage test.
Corresponding leakage values, tested with water
1.1 x nominal pressure.
DN NPS ml/min, water
500 20 3.0
600 24 3.6
750 30 4.5
1.5.4 Additional arrangements
During normal sequences of cooking the PZ-series locked
scraping metal seat keeps the hard chrome plated ball surface clean ensuring long lasting tightness and smooth
operation. However, in practice, it is difficult to totally prevent chips, sawdust, dirt or any other contaminants from
adhering to the ball surface, particulary during the cooking
sequence (temp about 175 °C / 347 °F), causing possible
ball surface damages.
Metso realizes that some mills may require a water wash/
spray to the ball surface and others may require a water
bed. Information on these additional services may be found
in bulletin 2611/01/05 or contact your nearest Metso’s business office: www.metso.com/contacts/contact-us/
1.5.5 Rear tilting device
The support (38) can be replaced with a rear tilting device
which locks the ball against the seat during cooking. The
device must be unlocked when operating. See Sections 9
and 10.
Operation:
1. The valve is open during filling. The pressure on top the piston keeps the lock open (the supply pressure is lead to part 74).
2. The valve is closed for cooking. The pressure underneath the piston push up the rear stem (the supply pressure is lead to part 72).
3. During cooking the lock pushes the ball against the seat. This prevents impacts of the vacuum to the ball and improves the tightness in the beginning of cooking.
4. Before opening of the valve the pressure should be lead on top the piston to open the lock. If the locking is on when opening the valve, the seating surfaces of the ball and seat will be damaged.
Supply air pressure range to the locking cylinder is 4 ... 6 bar.
Fig. 5 Rear tilting device closed
8 PZ 70 en 5
CAUTION:
Do not open the valve during cooking!
Valve control must be arranged to ensure that the valve
cannot be opened during cooking. Otherwise, personal
injury or damage to equipment may result.
CAUTION:
Beware of hot valve!
The valve body may be very hot during use.
Protect yourself against burns.
CAUTION:
When handling the valve or the valve package, bear in
mind its weight!
Never lift the valve or valve package by the actuator, posi-
Fig. 6 Rear tilting device open
tioner, limit switch or their piping.
Always fasten the lifting ropes to the lifting eye bolts, see
Fig. 5. Weights are detailed in the table on page 14.
Dropping the valve may result in personal injury or dam-
1.6 Valve approval
age to equipment.
The design of the valve meets the standards and criteria set
by ANSI and ASME.
DIN 50049 3.1B material certificates are available for body
halves, ball and bonnet. A tightness test certificate is also
supplied.
2 TRANSPORTATION, RECEPTION AND
STORAGE
Check the valve and accompanying devices for any damage
that may have occurred during transport. Store the valve
carefully prior to installation, preferably indoors in a dry
1.7 Recycling and disposal
Most valve parts can be recycled if sorted according to
material. Most parts have material marking. A material list is
supplied with the valve. In addition, separate recycling and
place. Do not take the valve to the installation site or
remove the flow port protectors until it is installed.
The valve is delivered in the open position mounted on
transportation supports.
disposal instructions are available from the manufacturer. A
valve can also be returned to the manufacturer for recycling
and disposal against a fee.
1.8 Safety precautions
CAUTION:
Do not exceed the permitted values!
Exceeding the permitted values marked on the valve may
3 INSTALLATION AND COMMISSIONING
3.1 General
Remove the flow port protectors and check that the valve is
clean inside and not damaged. Do not remove the transportation supports and flow port protection tape until
shortly prior to mounting the valve on the digester.
cause damage and result in uncontrolled pressure release.
Damage to equipment or personal injury may result.
CAUTION:
Do not remove or dismantle a pressurized valve!
Paper masking tape
32
Soft material between
body and support beam
Removing or dismantling a pressurized valve leads to
uncontrolled pressure release. Always release pressure
and remove the media from the valve before removing or
dismantling it.
Protect yourself and the environment from poisonous or
otherwise harmful substances.
Otherwise, personal injury or damage to equipment may
result.
4
1
Soft material between
body and support beam
CAUTION:
Beware of the cutting movement of the ball!
Keep hands, other body parts, tools and other objects
away from the open flow port. When the valve is in operation, the ball functions like a cutter. Shut off the actuator
pressure supply and detach the supply pipes for the duration of maintenance.
Otherwise, personal injury or damage to equipment may
result.
Fig. 7 Transport supports and protection tape
6 8 PZ 70 en
3.2 Mounting the valve on the digester
CAUTION:
When handling the valve or the valve package, bear in
mind its weight!
Lift the valve by the lifting eye bolts, see Fig. 8.
Fig. 8 Lifting the valve
The valve is delivered with the ball in the open position.
After any test-runs, make sure that the valve remains in the
open position to protect the ball surface.
To check whether an installed valve is in the open position,
ensure that
the arrow on the actuator pointer cover,
the groove at the end of the ball stem,
the stem key slot,
are all parallel to the ball flow port.
We recommend that the chip chute be provided with a
manhole approximately 300-500 mm above the valve.
3.3 The actuator
NOTE:
When installing the actuator, make sure that the valve/
actuator package functions properly. Detailed information
on actuator installation is given in the separate actuator
instructions.
The valve should be installed in a position enabling the
actuator to be removed without detaching the valve from
the digester.
The recommended installation position is with the cylinder
upright.
The actuator must not touch the digester structure; vibration may damage it or interfere with its operation.
3.4 Commissioning
Make sure there is no foreign matter in the chip chute. If the
valve leaks check adjusting of the tilting device as
described in Section 4.7.2 Assembly. If the valve still leaks
something has been damaged in shipment or installation
and the factory should be contacted.
After long storage, the gland packing (28) may leak. Tighten
it before the valve is brought into use.
4 MAINTENANCE
4.1 General
Observe the safety precautions mentioned in Section
1.8 before maintenance!
CAUTION:
When handling the valve or the valve package as a
whole, bear in mind the weight of the valve or the
entire package.
Although Metso’s Neles valves are designed to work under
severe conditions, proper preventative maintenance can
significantly help to prevent unplanned downtime and in
real terms reduce the total cost of ownership. Metso recommends inspecting the valves at least every five (5) years.
The inspection and maintenance interval depends on the
actual application and process condition.
The inspection and maintenance intervals can be specified
together with your local Metso experts. During this periodic
inspection the parts detailed in the Spare Part Set should
be replaced.
Time in storage should be included in the inspection interval.
Maintenance can be performed as presented below. For
maintenance assistance, please contact your local Metso
office. The part numbers in the text refer to the exploded
view and to the parts list in Section 8, unless otherwise
stated.
NOTE:
When sending goods to the manufacturer for repair, do
not disassemble them. Clean the valve carefully and flush
the valve internals. For safety reasons, inform the manufacturer of the type
of medium used in the valve (include material safety datasheets (MSDS)).
NOTE:
In order to ensure safe and effective operation, always use
original spare parts to make sure that the valve functions
as intended.
NOTE:
For safety reasons, replace pressure retaining bolting if the
threads are damaged, have been heated, stretched or corroded.
4.2 Changing the gland packing
CAUTION:
Ensure that the valve is not pressurized while the
gland packing is changed!
If a leak in the gland packing cannot be eliminated by tightening it, the packing must be replaced. The actuator can be
removed to facilitate this work.
Remove caps (53).
Loosen a little the tilting device nuts (18).
Remove nuts (17) and gland (6).
Remove ring (34) and old gland packings (28). The
lowest ring (34) need not be removed. Use a suitable
pointed instrument for removing the gland packings.
Do not damage the seating surface.
8 PZ 70 en 7
Clean the packing counterbore.
Push the new packing rings (28) one by one into the
counterbore with the gland (6). Position the cut ends
of the rings at a 90° angle to each other and at a 45°
angle to the flow port.
Push the outer ring (34) and gland (6) into place and
tighten the nuts (17) lightly.
Fasten tight the tilting device nuts (18) and then the
nuts (17) and install the cap (53). See Section 4.7.2.
Always check the seal of the gland packings after
installation.
4.3 Bearings (5, 22)
The ball stem bearing is located in the bonnet (8) under the
gland packing rings (28). The bearing is maintenance free. It
is recommended to be dismantled only when the whole
valve is dismantled.
The purpose of the bearing at the rear end of the ball, i.e.
the support (38), is to keep the ball at the valve center line
during operation, allowing a free up-and-down movement.
Normally, the support does not need to be inspected or
replaced.
4.4 Body joint
If the body joint leaks, tighten nuts (16) as shown in Table 1.
If the leak continues after the tightening, the valve must be
dismantled. Inspect the seating surface and ensure that the
body joint plane is level. Then replace the body gasket (26).
See Section 4.7.2.
4.5 Ball and seating
If the valve leaks, the probable cause is chips between the ball
and the seat. Before adjusting lifting springs (20), wash and
pool the ball surface with a water jet when valve partly open.
Operate the valve 2-3 times and retest.
Detach the actuator using the extractor, see
Chapter 6.
Dismantle the upper body half (1).
Fasten the lifting strap through the ball and keep it
adequately tightened.
Remove caps (53) and the tilting device nuts (18),
disc springs (20) and screws (13).
Detach the actuator console (7).
Remove the bonnet with gland packings (28) and
bearings (5, 22).
Remove the support (38) with extractor screws.
Lift the ball out of the body; take care not to damage
the seating surfaces or the stem.
Clean all dismantled parts carefully and replace worn
or damaged parts as necessary.
4.6.1 The ball
After lifting the ball from the body, place it on a clean, soft
surface for cleaning. Take special care to clean the ball seating surfaces and the gland packing area. Grind any minor
scratches on the ball and packing with 28/20 μm grinding
paste and finish with 7/5 μm paste. Scratches and burrs in
the stem can be ground with fine abrasive cloth of grade
400. If there are deeper scratches in the ball or it is misshapen, send it to the manufacturer for repair.
4.6.2 Ball seat
The seat (4) is locked in its groove. If the seat is in order and
there is no reason to suspect the condition of the seal (25),
the seat need not be dismantled for servicing.
Remove the seat as follows:
First grind down the locking points with a grinder,
see Fig. 9.
NOTE:
Lifting springs are factory preset and excessive tightening
might damage the ball surface. See Section 4.7.2, Table 2.
If washing does not help, the valve must be dismantled and
cleaned.
If the ball surface is damaged for some reason and causes
leakage, the ball can be turned 180° provided that the ball
seat is not damaged. A damaged ball seat will destroy the
ball surface in a short time. The valve must be dismantled
for inspection before turning the ball.
4.6 Dismantling the valve
CAUTION:
Do not dismantle or remove the valve when it is pressurized!
It is best to dismantle the valve for servicing when it is
detached from the digester. The lower body half can alternatively be left mounted on the digester. Use the loops
delivered with the valve for lifting.
Dismantle the valve on a clean, level cardboard or wooden
underlay.
Lower the valve onto the underlay if you have
removed the whole valve from the digester.
Turn the ball to the closed position.
Fig. 9 Grinding the seat locking
Open the locking points with a sharp chisel to facili-
tate removal, see Fig. 10.
Make sure that the seat slides freely in the groove.
Turn the body half upside down and knock it lightly
near the seating edge to make the seat drop out of
the groove on the underlay.
4.6.3 The body
Clean the body halves carefully and check all seating surfaces.
The body gasket (26) must be replaced each time the valve
is dismantled.
8 8 PZ 70 en
Locking shoulder
Back seal (25)
4.7.2 Assembly
Place e.g. corrugated cardboard in the body to pro-
tect the ball during the lifting. Fasten the lifting
straps through the flow port.
Lift the ball into the lower body half with the stem
first through the bonnet opening. Center the ball in
the flow port. Leave the ball suspended by the lifting
straps.
Mount the support (38) and the new spiral gasket
(39).
Push the bearing (5) over the stem to match the lock-
ing notches with the locking ring stops at the butt of
Fig. 10 Opening the seat locking
4.7 Valve assembly
4.7.1 Ball seat
To replace the back seal (25) of the seat (4), proceed as follows:
Cut the ends of the seal band to give a tight seal
against the edges of the groove where the two ends
overlap, see Fig. 11.
Fig. 11 Mounting the back seal
Place the seat into the upper body half and lock it at
the four points at 90° intervals, see Fig. 12.
the ball stem.
Slip the bearing (22) along the stem. The bearing
lock notch must match with the locking groove on
the bonnet (8).
Mount the bonnet (8) and the new bonnet gasket
(9).
Push the ring (34) and the new gland packings (28)
one by one into the packing groove with the gland.
Position the cut ends of the rings at a 90° angle to
each other and at a 45° angle to the flow port.
Set the outer ring (34) and the gland (6) into place
and tighten the nuts (17) lightly.
Set the body gasket (26) in place. The gasket must be
replaced each time the valve is dismantled.
Install the tilting device. Replace the bearings (24)
and ring (41) of the console (7). Slide the ring (41)
onto the stem.
Turn the screws (13) into the valve lugs, lock them
with lock nut (13a). Tighten the disc spring packs (20)
with nuts (18).
Loosen the ball from the lifting straps and remove
the straps.
Make sure that the ball is in the center of the flow
port by measuring the distances from the ball surface to the groove of the body joint plane.
Lift the upper body half into place in the original
position. See that a gap of about 5 mm (0.2") is left in
the body joint when the body half is resting on the
ball.
Tighten the body joint nuts (16) as shown in Table 1.
Table 1 Body joint nuts, tightening torques
Fig. 12 Locking the seat
Do not lock the seat too tight; it must be allowed to
slide in the groove.
Valve Nut thread
UN
PZ 500 (20") 1 1/8 - 8 UN 560 (420)
PZ 600 (24") 1 1/8 - 8 UN 560 (420)
PZ 750 (30") 1 1/2-8 UN 1400 (1050)
Tor qu e
Nm (lbf ft)
Mount the actuator, see Chapter 5.
Measure the distance "B", See Fig. 13.
8 PZ 70 en 9
Fig. 13 Measuring "B"
Feed compressed air into the actuator via the pres-
sure regulator, see Fig. 14.
Fig. 14 Air supply for adjusting the tilting device
If the actuator cannot turn the ball with the pressure
indicated in Table 2, depressurize the actuator and
loosen both tilting device nuts (18) by 90°. When
necessary, continue loosening the nuts 90° at a time
until the valve turns at the pressure indicated in the
table, see Fig. 15. Measure the distance "A", see
Fig. 16.
Table 2 Feed pressure for adjusting the tilting device
Valve-actuator Feed pressure, bar (psi)
PZ 500 - BCP32 < 1.3 (< 19)
PZ 600 - BCP32 < 1.8 (< 26)
PZ 750 - BCP40 < 2.0 (< 29)
Fig. 16 Measuring "A"
Fig. 17 The thickness of the washer
Tighten the nuts (18).
Fill the cavities with Mobilplex 47 or equivalent
grease. Mount the caps (53).
Fasten tight the gland packing nuts (17). Always
check the tightness of the gland packings after
installation of the valve.
5 INSTALLING THE ACTUATOR
Make use of the separate actuator instructions.
Make sure that the stem end is clean and free from
burrs.
Select the stem key slot that indicates that the valve
is in the extreme position when the valve is closed.
Turn the studs into the actuator before sliding the
actuator onto the stem.
Slide the actuator into position carefully.
Adjust the open and closed position limits.
Fig. 15 Loosening of the nuts
The measure "C" is the correct thickness of the
washer. If necessary, thin the washer. See Fig. 17.
Tighten the screws, keeping them in horizontally
balance.
5.1 Adjusting open and closed positions
The open and closed position limits of the valve are adjusted
with the stop screws on the actuator, see Fig. 18.
Adjusting the closed position:
Using a soft pencil, draw two lines on the top surface of the
ball, the first at G1 and the second at G2 distance from the
edge of the ball flow port, see Fig. 19 and Table 3.
Adjust the closed position stop screw so that the end
of the G1 line is just visible directly under the edge of
the body flow port when the valve is closed, see Fig. 20.
Adjust the limit switch's close position, limit switch is
activated when the end of the G2 line is just visible
directly under the edge of the body flow port, see
Fig. 21.
10 8 PZ 70 en
Closed position
stop screw
Open position
stop screw
Fig. 18 Actuator stop screws
Fig. 19 Drawing the marking lines
Table 3 G-dimensions
Valve G1, mm G2, mm
PZ 500 (20") 52 (2.1") 30 (1.2")
PZ 600 (24") 62 (2.5") 35 (1.4")
PZ 750 (30") 69 (2.8") 35 (1.4")
Adjusting the open position:
Fig. 20 G1 measure
Fig. 21 G2 measure
Open the valve and adjust the open position stop
screw so that the ball and the body flow ports are
parallel.
After the adjustment, lock the retaining screws and
seal them e.g. with Loctite 225.
8 PZ 70 en 11
6TOOLS
In addition to standard tools, you might need the following
special tools, which can be ordered from the manufacturer:
Detaching the actuator from the valve
- extractor
Tabl e 4 Extra ctors
Valve-actuator Extractor
PZ 500 - BCP32 8546-5
PZ 600 - BCP32 8546-5
PZ 750 - BCP40 8546-6
7 ORDERING SPARE PARTS
NOTE:
Use original spare parts to ensure that the valve functions
as intended.
When ordering spare parts, always give the following information:
valve type designation (from the identification plate
or valve documents)
parts list number (or number of this manual), part
number, name of the part and number of pieces
required.
12 8 PZ 70 en
33
1
16
25
4
3
40
38
39
35 31
21
42 (BC)
41
24
53
18
32
20
7
13
41 (BC, B1C)
5
22
9
10
8
12
34
28
34
6
17
26
11
30
29
2
38*
44 (B1C)
8 EXPLODED VIEW AND PARTS LIST
Item Qty Description Recommended spare part
1 1 Body, upper part
2 1 Body, lower part
31Ball
4 1 Ball seat
5 1 Bearing bushing
61Gland
71Console
8 1 Bonnet
91Spiral gasket x
10 Screw
11 Stud
12 2 Stud
13 2 Stud
13a 2 Lock nut
16 Nut
17 2 Nut
18 2 Nut
20 Disc spring
21 1 Key
13a
Item Qty Description Recommended spare part
22 1 Bearing bushing
24 1 Bearing strip x
25 2 Sealing cord x
26 1 Seal strip x
28 Packing ring x
29 1 Identification plate
31 4 Stud
32 2 Adjusting plate kit
33 4 Lifting eye bolt
34 2 Support ring
35 Nut
38 1 Support
38* 1 Rear tilting device
39 1 Spiral gasket x
40 6 Screw
41 1 Bearing ring
42 2 Washer
44 1 Retainer plate
53 2 Protection cover
8 PZ 70 en 13
9 REAR TILTING DEVICE
Item Qty Description Recommended spare part
038 1 Support
060 1 Support bar
061 1 Cylindrical pin
062 1 Cylindrical pin
063 1 Piston rod
064 1 Bracket
065 1 Bearing strip
066 1 V-ring set x
067 1 Casting gland
068 2 Stud
069 2 Retainer plate
070 2 Disc spring set
071 2 Hexagon nut
072 1 Cylinder base
072A 1 Sticker "LOCK"
073 1 Cylinder pipe
074 1 Cylinder end
074A 1 StIcker "RELEASE"
075 2 Piston
076 1 O-ring x
077 1 O-ring x
078 2 O-ring x
079 1 Bearing strip x
080 2 Piston ring x
081 1 Hexagon screw
082 4 Hexagon screw
083 1 O-ring
084 1 Hexagon nut
085 8 Hexagon screw
086 1 Lock nut
087 1 Filling ring
088 2 Protection plug
14 8 PZ 70 en
10 SAFETY INTERLOCKING
(JAMMER, REAR TILTING DEVICE)
OPEN
CLOSE
"JAMMER"
UNLOCK
LOCK
LOCK
RELEASE
VALVE AND ACTUATOR SHOWN
IN FULLY CLOSED POSITION.
CLOSE
AIR SUPPLY
IMPORTANT NOTICE!
ENERGIZE SOLENOID VALVE
11.A BEFORE ANY VALVE
OPERATION AND KEEP IT
ENERGIZED UNTIL
AIR SUPPLY
VALVE FULLY CLOSED
(DURING COOKING PERIOD
DE-ENERGIZED).
2.B
PNEUMATIC ACTUATOR B1CP
2.A1
PNEUMATIC "JAMMER" CYLINDER LOCK
2.A2
PNEUMATIC CYLINDER "TILTING DEVICE"
4.B
LIMIT SWITCH CAPPING VALVE ( 4 switches)
4.A
LIMIT SWITCH "JAMMER"
11.B
5/3-WAY SOLENOID VALVE , DUAL COIL
11.A
5/2-WAY SOLENOID VALVE , SINGLE COIL
19
FILTER REGULATOR
8 PZ 70 en 15
11 DIMENSIONS
NPT
C
B
G
NPT
F
V
Valve Main dimensions in mm
Type DN Lower flange* A A1 B C L
PZ 500 AK 500
PZ 600 AK 600
PZ 750 AK 750
490 ≤ D ≤ 520
640 ≤ D ≤ 680
580 ≤ D ≤ 590
720 ≤ D ≤ 740
730 ≤ D ≤ 740
880 ≤ D ≤ 890
730
630
870
770
1080
930
A
A
A
1
B
400
300
480
380
600
450
DN
D
J
H
920 625 590 3/4 38 1330 910 395 153 840 B1C 32 1250
1070 740 700 7/8 42 1330 910 395 153 970 B1C 32 1750
1330 910 860 1 42 1660 1150 505 194 1200 B1C 40 2600
A
X
B
UNC Depth
For chip chute mounting
U
1
L
-
A
A
M
N pcs
O
B-B
O, M, and N
acc. to customer's
specification
Optional lower flange pattern
Pneumatic
U1
F G X V J
actuator
type
Weight
kg
**)
Valve Main dimensions in inch
Type Size Lower flange* A A1 B C L
PZ 500 AK 20
PZ 600 AK 24
PZ 750 AK 30
*) The lower flange is made to correspond to the digester flange. The valve height A varies with the lower flange diameter.
**) Weights are only approximative due different lower flange sizes.
19.29 ≤ D ≤ 20.47
25.19 ≤ D ≤ 26.77
22.83 ≤ D ≤ 23.23
28.34 ≤ D ≤ 29.13
28.74 ≤ D ≤ 29.13
34.64 ≤ D ≤ 35.04
28.74
24.80
34.25
30.31
42.52
36.61
15.75
36.22 24.61 23.23 3/4 1.50 52.36 35.83 15.55 6.02 33.07 B1C 32 2750
11.81
18.90
42.13 29.13 27.56 7/8 1.65 52.36 35.83 15.55 6.02 38.19 B1C 32 3850
14.96
23.62
52.36 35.83 33.86 1 1.65 65.35 45.28 19.88 7.64 47.24 B1C 40 5720
17.72
U1
UNC Depth
F G X V J
Pneumatic
actuator
type
Weight
lbs
**)
Metso Flow Control Inc.
Europe, Vanha Porvoontie 229, P.O. Box 304, FI-01301 Vantaa, Finland. Tel. +358 20 483 150. Fax +358 20 483 151
North America, 44 Bowditch Drive, P.O. Box 8044, Shrewsbury, M A 01545, USA. Tel. +1 508 852 0200. Fax +1 508 852 8172
South America, Av. Independéncia, 2500-Iporanga, 18087-101, Sorocaba-São Paulo, Brazil. Tel. +55 15 2102 9700. Fax +55 15 2102 9748
Asia Pacic, 238B Thomson Road, #17-01 Novena Square Tower B, Singapore 307685. Tel. +65 6511 1011. Fax +65 6250 0830
China, 11/F, China Youth Plaza, No.19 North Rd of East 3rd Ring Rd, Chaoyang District, Beijing 100020, China. Tel. +86 10 6566 6600. Fax +86 10 6566 2583
Middle East, Roundabout 8, Unit AB-07, P.O. Box 17175, Jebel Ali Freezone, Dubai, United Arab Emirates. Tel. +971 4 883 6974. Fax +971 4 883 6836
www.metso.com/valves
16 8 PZ 70 en
12 TYPE CODE
Capping valve, series PZ
1. 2. 3. 4. 5. 6. 7. 8.
PZ K S 600 / 800 A R V
Size marking, either in inches or in millimeters, defines also the upper end connection
threads; unified threads when size expressed in inches and metric threads when size
expressed in millimeters.
1. Product series/Construction/Pressure rating
Ball valve, lower body half with flange to be specified in
order. Upper body half with 16 pcs tapped holes with
PZ
metric threads or unified threads starting from center
line. Body pressure rating PN16 / ANSI class 150.
2. Connections / Special construction
K 2 pcs PN16 / DN 80 connections in lower body half.
2 pcs ANSI class 150 / NPS 3" connections in lower body
C
half.
N Lower body half without connections.
Special connections, special location e.g. in upper body
Y
half or special quantity or some other speciality.
3.
DN 500 / 20" DN 600 / 24" DN 750 / 30"
730 mm / 28.74" 870 mm / 34.25" 1080 mm /
L
End-to-end length
42.52"
S 630 mm / 24.80" 770 mm / 30.31" 930 mm / 36.61"
Y Special Special Special
4.
DN/mm NPS/inch
Size
500 20
600 24
700 30
5. Nominal size of lower body half (mm or in)
Specified in the order. Nominal size of lower body half is given in
the same units as the valve size, see 4. sign separated by slash.
6. BODY BALL BALL SEAT BEARINGS
CF8M CF8M +
A
hard
chrome
316 SS +
cobalt
based hard
Coated hard
chrome +
UNS S21800
facing
CG8M CG8M + CA-
C
chrome
317 SS +
cobalt
based hard
Cobalt
based alloy
facing
7. Ball seat type
R Scraping, locked, seat seals in grooves.
8. Options*
- Standard, without sign
V Water flushing for ball
L Rear tilting device
Y Special
Safety equipment versions are specified in Application Bulletins
2611/01/02 (ACC) and 2611/01/03 (Jammer inside the actuator).
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