USER INSTRUCTIONS
Valtek Torex TX Control and shut-off valves
Butterfly Valves
VLEEIM4143-02 09.10
Installation
Operation
Maintenance
Experience In Motion
Contents
SAFETY
General 1
Lifting 2
Receiving inspection 3
Installation 4
Flange gaskets 5
Starting up 6
List of materials and spare parts 7
Ordering of spare parts 8
Maintenance 9
To remove the valve from the pipework 9.1
To change an Inconel seat ring 9.2
To replace PTFE seat rings 9.3
To adjust a new seat ring in a valve with
manual operating lever or worm gear unit 9.4
To adjust the seat ring in a valve with
pneumatic actuator 9.5
To inspect and replace the upper stem seal: 9.6
Graphite type 9.6.1
Boxpacking Zebra-CL™ 9.6.2
Boxpacking SafeGuard 9.6.3
To change the packing, item no. 9 9.7
To replace the stem and valve disc 10
Fitting the actuator to the valve 11
SAFETY
- Assess all the risks to eliminate the risk of personal
injury and material damage. Read these instructions
thoroughly!
- Always use the necessary protective equipment
and comply with applicable safety directives when
working with hazardous or hot/cold medium.
- Never operate a valve without first ensuring that there
is no risk of crush injuries. The risk is highest with
automatic valves.
- Take necessary safety precautions to prevent
unintentional manoeuvre - i.e to atmosphere.
- Never dismantle a valve or part of a valve without
ensuring that the line is free of pressure and any
content.
- Always check that the valve type and material is
suitable for its intended use. This applies especially to
highly oxidising and corrosive medium. Observe also
the risk of erosion and explosion as well as decaying
medium. If in doubt, always request a written
recommendation from NAF AB.
Torex TX VLEEIM4143-02 09.10
The product codes of Torex TX are specified in
VLxxTB41431):
1)
xx = Language, i.e EE = English
2. Lifting
All lifting must be carried out on the valve itself and not
on the actuator.
3. Receiving inspection
All valves leaving our works are inspected and tested in
accordance with the relevant requirements or in accordance with the special provisions specified by the purchaser.
Valves equipped with actuators are subjected to
functional testing and are adjusted in such a manner that
every unit is completely ready for direct installation in the
pipework.
However, in view of damage that may have occurred
during transport, it is advisable that receiving inspection
be carried out as follows
- Check that the valve delivered is correct in terms of
type, size, equipment, etc.
- Examine the valve, actuator and valve positioner
regarding possible damages.
- Operate the valve to the limits of its travel to
check the settings of the limit stops.
1. General
The instructions and list of spare parts in the
succeeding apply to Torex butterfly valves in
accordance with catalogue sheet VLEETB4143.
2
Torex TX VLEEIM4143-02 09.10
4. Installation
Before installing the valve, ensure that the pipework is
free from impurities, that the pipe ends between which
the valve is to be installed are parallel and are correctly
aligned, and that the distance between the pipe ends corresponds to the valve length, including gaskets.
The valve should not be used for contraction or aligning
incorrectly pipe lines (see Fig. 2).
Wrong installation Correct installation
Fig 2: Ensure that the pipe ends align and have the
correct distance
Torex TX valves can be installed in any position,
regardless of the direction of flow
recommend that, if installed in a horizontal run of pipe,
the valve should be mounted with the stem horizontal,
in order to prevent the accumulation of dirt and other
impurities around the stem ends.
. However, we
6. Starting up
Before starting up, flush the pipework - with all valves
in the open position - so that any impurities that may
damage the sealing surfaces of the valve and impede its
operation will be flushed away.
The butterfly valve body is marked with an arrow which
indicates that best tightness thereby that the differential
pressure gives an additional torque in the closing
direction while a differential pressure towards the plane
side gives an extra torque in the opening direction.
Locate the valve so that it will be easily accessible
for inspection and service, particularly if the valve is
equipped with an actuator and a valve positioner.
Ensure that the valve is installed so that the connected
pipe ends do not obstruct the free movement of the disc
when the valve is operated.
The pipes should be supported on each side of the
butterfly valve, in order to relieve the valve of loads and
avoid vibrations.
5. Flange gasket
Gaskets to the dimensions specified in SS 359, DIN 2690
or ANSI B 16.5, 1988, Table E1, Figure E2, Class 150 can
be used.
3
7. List of Materials and Spare Parts
Item Qty Part Material Remark
1a 1 Body EN 1.4408/CF8M
1b 1 Body EN 1.0619 Carbon steel version
2 1 Disc EN 1.4408/CF8M
4a 1 Stem, upper EN 1.4460
4b 1 Stem, upper EN 1.4462 NACE-version
5a 1 Stem, lower EN 1.4460
5b 1 Stem. lower EN 1.4462 NACE-version
6 1 Clamp ring
7 1 Retaining EN 1.4436
8 1 Gasket Graphite
9 1 Gasket Graphite
10 1 Seat ring Inconel 718
14 1 Seat ring PTFE carbon reinfor
15 1 Clamp ring
18 1 O-ring FPM
20 1 Backing ring PTFE
21 1 Boxpacking set Graphite
22 Cup spring 17-7PH For SafeGuard version
23 1 Gland cover EN 1.4408/CF8M
24 1 Boxpacking set
26 1 Stem bearing Metaloplast
27 1 Stem bearing Metaloplast
28 2 Pin screw A4
29 2 Nut A4
31 Screw A4
33a 3 Pin
33b 3 Pin
36 2 Key Stainless steel
37 1 W
38 2 Retaining plate
asher Metaloplast
Torex TX VLEEIM4143-02 09.10
DN >250
EN 1.4408/CF8M
DN <=250
EN 1.4436/AISI316
ced
DN >250
EN 1.4408/CF8M
DN <=250
EN 1.4436/AISI316 PTFE-version
V
-ring PTFE virgin/
PTFE 25 % C
DN<=500 EN 1.4436
DN>500 EN 1.4460
DN<=500 EN 1.4436
DN>500 EN 1.4462
DN<=200 EN 1.4436
DN>200 EN 1.4460
NACE-version
1) Clamp ring item 15 must be included if the valve is to be
converted from some other type of seat to a PTFE seat ring.
2) Quantity depending on dimension.
*) Recommended spare parts.
4
Seat type A (PTFE)
Seat type B (Inconel)
29
Torex TX VLEEIM4143-02 09.10
Stem seal G, H (Graphite)
21
28
38
23
33a
18
20
24
26
33b
36
4a
4b
2
1b1a
10 14
15
8
6
31
5a
5b
27
9
37
7
Fig 3. Spare parts, stem sealing and seatrings
5
Torex TX VLEEIM4143-02 09.10
8. Spare parts
State the following data when ordering spare parts:
1. Product code of the valve - incl. DN according to
VLEETB4143 and the Manuf. No. specified on
the identification plate of the valve.
Ordering example: 2382BB-0200-BAAABA
manuf. No 1234567,
Seatring item10.
Quantity 1 st.
9. Maintenance
If the valve disc or seat ring has sustained damage due to
impurities in the pipework or for some other reason, or if
the seat ring and stem seals need replacing after a long
period of service, the valve must be overhauled.
Many valves are installed in such locations that their
performance is of decisive importance to the entire
process. Such valves should be inspected regularly and
any faults should immediately be corrected.
9.1 To remove the valve from the pipework
The procedure for inspection and maintenance, for which
no special tools are necessary, is as follows:
2. Remove the bolts, clamp ring (6), gasket (8) and
(M6) in the retainer ring to remove the ring from
the valve body.
3. Carefully wash all parts. First use warm water
and then, if necessary, a suitable solvent. Do not
scrape any of the machined surface with hard
tools.
4. Examine the surfaces on the periphery of the
valve disc. Minor scratches and marks on the
sealing surface can be rubbed down with emery
paper.
5. Inspect the seat ring. During such overhauls, it is
always advisable to fit a new seat ring.
6. Refit the gasket (8).
7. Spray the valve disc, sealing surface and seat
ring with a suitable lubricant, such as Molykote
321 R or Gleitmo 900 or Unimoly C 220. Allow
the lubricant to dry for at least 15 minutes.
8. Fit the seat ring (10) and clamp ring (6) into
the valve body.
seat ring (10). Use the two tapped holes
Ensure that the valve is not under pressure.
1. Ensure that the recommended spare parts and
also the gaskets for the pipe flanges are
available.
2. Close the valve.
3. Shut off all compressed air connections and
isolate all electrical connections to the actuator.
4. Disconnect all compressed air lines and electric
cables connected to the actuator.
5. Note the direction of flow which is shown by an
arrow on the valve body.
6. Release the flanged joint between the valve and
the pipework. Then lift out the valve. Apply all
lifting forces to the valve itself and not to the
actuator.
9.2 To change an Inconel seat ring
If an actuator is fitted to the valve, it need not be removed
for inspection and replacement of the seat ring.
9. Screw in the retainer ring bolts, but don’t tighten
the retainer ring.
10. Check that the A-measure is correct according to
9.4.
9.3 To replace PTFE seat rings.
1-4 See the corresponding items in section 9.2.
5. Carefully clean the groove in the body into which
the seat ring is mounted.
6. Make sure that the PTFE seat ring is mounted
with its L - shaped (or the sharp corner) side
towards the retainer ring.
7. The disc must be turned 180˚ before the retainer
ring is placed in the valve. When the seatring is
correctly positioned into the retainer ring, place
the package in the valve.
8. Carefully fasten the retainer ring, but do not
tighten it.
1. Set the valve to the fully open position.
6
Torex TX VLEEIM4143-02 09.10
9. Close the disc for centering the seatring, screw down
the retainer ring to keep the seatring in place.
10. Check that the seatring is centered. The play
shall be evenly applied between the disc and the
body.
Start to fasten the retainer ring by crosswisely
changing screws with evenly applied force.
11. The retainer ring shall more or less flush with the
valve body. If not, gently hammer with a plastic
hammer at the same time as the screws are
tightened.
12. Now you can mount the actuator and adjust the
end positions of the actuator until you get the
correct A-measure. This is described separately
below.
The valves seat ring should now be correctly prepared and
should not leak. Please note that PTFE can leak before it
becomes warm and adjusts to the disc. This is however a
small leakage and should not be considered. The valve
will be tight shortly.
9.4 To adjust a new seat ring in a valve with
manual operating lever or worm gear unit
1. Close the valve to the sealing position corresponding to
the value of dimension ”A” shown in Fig. 4.
2. Adjust the end stop of the operating lever or the worm
gear unit so that the sealing position will not be exceeded.
3. Tighten the retainer ring bolts in diagonally opposite pairs.
9.5 To adjust the seat ring in a valve with
pneumatic actuator
1. Turn the valve to closed position, although without
applying a sealing torque. The valve disc should then
only just be in contact with the seat ring in the valve
body.
2. Adjust the end position stop to the position in which the
valve is almost closed.
3. Connect the compressed air supply to the actuator. If
the end position stop is correctly set, the valve disc will
not move.
4. Adjust the end position stop until the actuator has
turned the valve disc to the sealing position, i.e.
dimension ”A” shown on the valve in accordance with
section 9.4 and Fig. 4.
5. Lock the end position stop so that the sealing position
will not be exceeded.
6. Tighten the retainer ring bolts.
9.6 To inspect and replace the upper stem seal:
9.6.1 Boxpacking of graphite type
The boxpacking usually requires inspection and adjustment
after the valve has been taken into service.
Ensure that the valve is not under pressure.
1. Remove the actuator.
2. Remove the nuts (29) and remove the gland
cover (23) and the boxpacking set (21).
Fig. 4. Adjusting a new seat ring.
3. Clean the surfaces of the stem, gland cover (23)
and recess in the valve body.
4. Carefully examine the stem surface which
must be completely free from marks and
scratches.
5. Fit new boxpacking set (21). Then fit the gland
cover (23) and the nuts (29).
6. Tighten the nuts (29) sufficiently to ensure that
the boxpacking is correctly seated and that it is
in contact with both the stem and the valve body.
Note: Check the condition of the boxpacking and, after the
valve has been taken into service, retighten the nuts (29), if
necessary.
7
Torex TX VLEEIM4143-02 09.10
9.6.2 Boxpacking Zebra-CL™
The sealing requires inspection and adjustment when the
valve is taken into operation.
Ensure that the valve is free of pressure.
1. Dismount the actuator.
2. Remove the nuts (29). Lift off the gland cover
(23). Then remove the boxpacking set (24) and
the o-ring (18).
3. Clean the stem surfaces, gland cover (23) and
the recess in the valve body.
4. Inspect the stem surface thoroughly. It should be
free from marks and scratches.
5. Lubricate the stem with suitable lubrication.
6. Replace the boxpacking set (24) and the greased
o-ring (18). Then mount the gland cover (23)
and nuts (29).
7. Tighten the nuts (29) until the boxpacking gets
in place and is in contact with both the stem and
valve body. Check the tightness of the box packing and retighten the nuts (29) – if
necessary - when the valve is taken into
operation.
9.6.3 Boxpacking SafeGuard
The sealing requires inspection and adjustment when the
valve is taken into operation.
6. Replace the boxpacking and the greased
and nuts (29).
7. Tighten the nuts (29) until the boxpacking gets
in place and is in contact with both the stem and
valve body. Check the tightness of the packing
and retighten the nuts (29) – if necessary - when
the valve is taken into operation.
9.7 To change the packing, item No. 9
Ensure that the valve is not under pressure.
1. Remove the Retaining (7) and gasket (9).
2. Carefully clean the retaining (7) and the lower,
loadcarrying part of the stem (5).
3. Fit a new gasket (9).
4. Spray locking compound, such as Loctite 641,
onto the screw threads in the valve body.
5. Fit and tighten the retaining (7).
O-ring (18). Then mount the gland cover (23)
10. To replace the stems and the
valve disc
If the valve disc (2) or stems (4) and (5) have been damaged
and need replacing, the valve must be sent to NAF for repair,
since special tools and fixtures are necessary for correct
assembly.
11. Fitting the actuator to the valve
Ensure that the valve is free of pressure.
1. Dismount the actuator.
2. Remove the nuts (29) and the cup spring (22).
Lift off the gland cover (23). Then remove the
boxpacking and the o-ring (18).
3. Clean the stem surfaces, gland cover (23) and
the recess in the valve body.
4. Inspect the stem surface thoroughly. It should be
free from marks and scratches.
5. Lubricate the stem with suitable lubrication.
8
1. The actuator can be mounted directly on the
valve. The mounting flange and the stem of the
valve follow the NAF standard for securing the
actuator.
2. Turn the valve to the closed position (clockwise),
although without applying a closing torque. (The
valve disc should then only just be in contact
with the seal ring in the valve body.)
3. Fit the actuator. The actuator should be in the
”almost closed” position, i.e. 5 - 8° of the
rotary travel of the actuator should remain before
the end position. Adjust the end position stop of
the actuator to this almost closed position.
4. Connect the compressed air supply to the
actuator. (Applies to pneumatic actuators.)
5. Adjust the end position stop until the actuator
has turned the valve disc to the sealing position.
This sealing position varies from valve to valve,
and the dimension is specified on the valve body
adjacent to the arrow showing the direction of
flow. See dimension ”A” in Fig. 4 in section 9.4.
6. General
The actuator may be fitted either in line with the
connected pipes or transversely to them. An
intermediate plate is necessary for mounting the
actuator in line with the pipework.
N.B. The direction of closure must always be clock wise,
as viewed from the actuator.
Torex TX VLEEIM4143-02 09.10
Before fitting the actuator, it is important to ensure that the
actuator fits the stem. First try without keys, to check that
the drive slips easily onto the stem. Also check that the keys
are easy to fit and match the keyways in the stem. Grease
the actuator stem entry.
Take care to ensure that the end position stops on the
actuator are correctly set and locked. If the end position stop
for the closed position is incorrectly set, the valve disc may
overtravel, which could damage the sealing elements.
9
To find the sales location nearest you visit
Flowserve.com/SalesLocator
For more information about Flowserve Corporation, visit
www.flowserve.com
Flowserve Linköping
Gelbgjutaregatan 2
58187 Linköping
Sweden
Phone: +46 (0) 13 31 61 00
Fax: +46 (0) 13 13 60 54
Flowserve Corporation
Flow Control
1350 N. Mt. Springs Parkway
Springville, UT 84663
USA
Phone: +1-801 489 8611
Fax: +1-801 489 3719
Flowserve (Austria) GmbH
Control Valves - Villach Operations
Kasernengasse 6
9500 Villach
Austria
Phone: +43 (0) 42 42 41181-0
Fax: +43 (0) 42 42 4118150
Flowserve Pte Ltd.
12 Tuas Avenue 20
Republic of Singapore 638824
Singapore
Phone: (65) 68 798 900
Fax: (65) 68 624 940
ve Essen GmbH
Flowser
Manderscheidtstrasse 19
45141 Essen
Germany
Phone: +49 (0) 201 89 19 5
Fax: +49 (0) 201 89 19 662
VLEEIM4143-02 09.10
All data subject to change without notice
©08. 000 Flowserve Corporation. Flowserve is a trademark of the Flowserve Corporation
flowserve.com
Flowser
ve S.A.S.
7, Avenue de la Libération
B.P. 60
Thiers 63300
France
Phone: +33 (0)4 73 80 42 66
Fax: +33 (0)4 73 80 14 24
Loading...