Wey TZ User manual

weyvalve.com
Instruction manual 4.30.10
Wey Eccentric Butterfly Valve
TZ

SISTAG AG, alte Kantonsstrasse 7, 6274 Eschenbach, Switzerland
Telefon [phone], Telefax [phone] weyvalve.ch, [e-mail]
Instruction Manual
Wey®Eccentric Butterfly Valve TZ01
1. GENERAL
2. TRANSPORTATION, STORAGE
2.1 - Transportation
2.2 - Storage
3. INSTALLATION
3.1 - Preparation before installation
3.2 - Installation site
3.3 - Installation position
3.4 - Pressure direction
3.5 - Mounting
4. COMMISSIONING
4.1 - General measures
4.2 - Safety measures
4.3 - Pneumatically operated Wey® Butterfly Valves
4.4 - Electrically operated Wey® Butterfly Valves
5. MAINTENANCE
5.1 - Operating cycles
5.2 - Checks / Lubrication
6. TROUBLE SHOOTING
7. FINAL REMARKS
Version 2012.04

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Butterfly Valve TZ01 Instruction Manual
Version 2012.04 page 2 / 8
1. GENERAL
Prior to any work or start-up and in order to ensure a proper functioning of our products,
the instruction manual must be observed.
Alterations on the products need our written approval. For consequential damages due to
neglection of this direction, we have to reject any liability.
2. TRANSPORTATION, STORAGE
2.1 Transportation
Transportation of the Wey® Butterfly Valves to their final destination (building site) shall take
place in solid
crates adapted to the Wey® Butterfly Valves’ size. The Wey® Butterfly Valves shall be protected
against exterior damage and atmospheric exposure.
Depending on the duration of transportation or storage and in view of the conditions, preservation
shall take place by welding Wey® Butterfly Valves into PE-film or adding sufficient drying agent or
equal.
2.2 Storage
Until final installation the Wey® Butterfly Valves shall be stored in a dry, shaded and vented area.
All function relevant parts shall be suitably covered against humidity, dust or other contamination.
The valve disc shall be set in a slightly (10°) open position for relief of the rubber seat.
Factory applied preservatives shall be checked for possible transport damages and appropriately
repaired acc. supplier’s instructions, if necessary.
For accessories mounted to the Wey® Butterfly Valves, such as electric actuators, limit switches,
solenoids, etc., the respective storage instructions of the manufacturer shall be observed with
priority.
3. INSTALLATION
3.1 Preparation before installation
Not correctly aligned pipelines must, by all means, be corrected before installation in order to
avoid tensions or even cracking of the valve body.
Before final installation of the Wey® Butterfly Valves, all parts and in particular the bore passage
and the disc seal shall be free of dust and dirt.

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Butterfly Valve TZ01 Instruction Manual
Version 2012.04 page 3 / 8
3.2 Installation site
The installation site shall be chosen so that the Wey® Butterfly Valves are well accessible for
functional checks or maintenance work.
For outdoor installations, the Wey® Butterfly Valves shall be protected at site with shields or
covers against severe weather conditions like snow and ice.
3.3 Installation position
It is recommended to install the Wey® Butterfly Valve with the shafts in horizontal position for
reasons of: (Fig. 1)
- Self-cleaning effect (no depositions)
- Equal weight loads from disc to both
shaft bearings.
3.4 Pressure direction
The pressure direction is generally from both sides possible. The preferred Wey® Butterfly Valve
installation position as such is with the pressure direction against the valve disc acc. Fig. 1.
(preferred)
Fig. 1

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Butterfly Valve TZ01 Instruction Manual
Version 2012.04 page 4 / 8
3.5 Mounting
Before mounting, Wey® Butterfly Valves to be checked for possible transportation or storage
damages.
The Wey® Butterfly Valves shall be protected against construction work at site.
If lifting devices are used, Wey® Butterfly Valve shall be hooked at cast-in lifting lugs only and not
at actuator.
The flange pattern consists of through holes. Apply flange bolts acc. Fig. 2.
Fig. 2
The thread dimensions and the number of bolts are found in the dimension sheets.
ATTENTION:
Tighten bolts cross-wise with caution, so that tensions in the
body do not cause any cracking or breaking. No tilting, steady
tightening.
Should there be a longer time period between mounting and power connection of electrically
operated valves, it shall be ensured that the integral heater of the actuator is already connected
during mounting of the Wey® Butterfly Valves in order to avoid the formation of condense water
(or protect actuator with suitable drying agent).

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Butterfly Valve TZ01 Instruction Manual
Version 2012.04 page 5 / 8
4. COMMISSIONING
4.1 General measures
Before taking the Wey® Butterfly Valves into service, clean body and actuator thoroughly.
Check the Wey® Butterfly Valve coatings for possible mounting damages and repair acc. to
supplier’s instructions, if necessary.
4.2 Safety measures
For automated Wey® Butterfly Valves installed in an area where valve movement could be
dangerous for people (or animals/objects), it must be ensured by the user on-site that all
moving parts are fenced with a suitable cover or protection shield.
Such covers are optionally available from manufacturer.
4.3 Pneumatically operated Wey® Butterfly Valves
Solenoid valves shall be mounted as close as possible to the actuating cylinder.
The size of the air supply pipes has to be in relation to the air volume.
Before start-up, all on-site mounted supply pipes and solenoid valves shall be thoroughly flushed
and cleaned, if necessary.
For the actuation of the cylinder we recommend the use of slightly oiled supply air.
Factory mounted solenoid valves are normally provided without accessories like throttle or
muffler. On-site regulations must therefore be observed.
Pneumatically operated Wey® Butterfly Valves shall not be closed instantly in order to avoid the
risk of pressure shocks.
4.4 Electrically operated Wey® Butterfly Valves
For trouble-free commissioning of electric actuators, we recommend to call on our specially
trained customer service specialist.
On-site electric installations shall be in accordance with respective connecting diagram of the
supplier. In addition, the specific operating instructions of the actuator supplier shall be observed.
Before the first electrical operation, the valve gate shall be set to an intermediate position with the
manual override, and then started.

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Butterfly Valve TZ01 Instruction Manual
Version 2012.04 page 6 / 8
When connecting to the power supply, the phase sequence has to be observed.
ATTENTION:
With wrong phase sequence, limit and torque switches
are ineffective.
The switch-off shall be in accordance to our instructions/diagrams, i.e.:
- Switch-off in opening and closing direction with limit switches only. The torque
switches serve as overload protection.
5. MAINTENANCE
5.1 Operating cycles
During one service year, at least four (4) operating cycles shall take place, whereby all com-
ponents shall be checked. Under severe service conditions, such functional checks shall take
place more frequently.
5.2 Checks / Lubrication
Periodic maintenance or lubrication of the Wey® Butterfly Valve is under normal service
conditions not necessary.
For actuators, the respective operating instructions of the suppliers are binding.
To avoid any damage due to longer stand-still periods, the valve disc has to be
set into a slightly open (10°) position.
When recommissioning, follow the steps under commissioning (para 4).

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Butterfly Valve TZ01 Instruction Manual
Version 2012.04 page 7 / 8
6. TROUBLE SHOOTING
Trouble
Possible Cause
Elimination
Leakage in bore
passage of valve
Valve disc not comp-
letey closed; jammed
particles between disc
and body internals
Manual valves
- Open valve slightly and repeat
closing action.
- Remove jammed particles.
Pneumatically operated valves
- Open valve slightly and repeat
closing action.
Electrically operated valves
- Check if limit switch position is set
properly.
- Open valve slightly and repeat closing
action, check, possibly reset limit and
torque switches (upon supplier’s
recommendation).
Disc seal damaged
Remove valve, replace seals according
to instructions.
Leakage between
valve flange and
pipe flange
Valve and pipe flange not
parallel
- Correct pipe flange alignment.
Flange bolts not
tightened
- Tighten bolts firmly.
Valve disc is not
movable
Actuating components
damaged
Manual valves
Check, clean valve disc, replace
defective parts, if necessary.
Pneumatically operated valves
Check supply pressure. Check if current
onto solenoid existent. Check solenoid
for damages.Check actuating cylinder for
damages (seals).
Clean and lubricate, if necessary replace
damaged components acc. to supplier’s
instructions.

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Butterfly Valve TZ01 Instruction Manual
Version 2012.04 page 8 / 8
6. TROUBLE SHOOTING (Cont’d)
Trouble
Possible Cause
Elimination
Valve disc is not
movable (cont’d)
Actuating components
damaged
Electrically operated valves
Check if current existent.
Check if motor defect.
Check if limit switches defect or malset.
Check if gear damaged.
Clean and lubricate, if necessary replace
damaged components acc. to supplier’s
instructions.
Valve clogged, calcified,
valve disc contamined
Remove valve, clean, possibly
disassemble completely.
Closing or open-
ing stroke ceasing
or stagnating
Insufficient supply
pressure
Pneumatically operated valves
Check supply pressure, possibly increase
supply pressure.
Solenoid valve dirty
Remove and clean solenoid valve,
possibly install filter.
Piston rod seal
damaged
Remove and clean piston rod seal,
possibly exchange cylinder seals, lubricate.
Pressure loss
on supply net
Pipe connections
damaged
Check pipe connections, tighten, replace
if necessary.
Cylinder seals
damaged
Check and replace cylinder seals,
lubricate.
Leakage through
shaft bearing
Seals damaged
Remove valve and disassemble.
Replace defective seal.
7. FINAL REMARKS
All details given above are to our current up-to-date knowledge and shall provide, together with
our technical documentation, information about our products and their range of applications.
They are not thought to assure particular features of the products nor their suitability for a specific
application.
Faultless quality is assured within our General Sales Conditions.
For any further information, please call any time on our Customer Service Department.
ALTERATIONS AND ADDITIONS RESERVED