Fasani Gate Valves, Fasani-EN Manuals & Guides

FASANI OPERATING AND SAFETY INSTRUCTION

GATE VALVES - CAST GATE VALVES

Before installation these instructions must be fully read and understood

INSTALLATION

WARNING

For safety reasons, it is important to take the
following precautions before you start to work
onthe valve:

1. Before installing, operating or maintaining the
valve, read all labels fitted to the valve and the
present document.

2. Use valves only for the intended purpose
(according to contract).

3. Any additional modifications and/or
accessories mounting on valves are not
allowed without approval from our technical
department.

4. Personnel making any adjustments to the
valve should use equipment and clothing
normally used to work with the process
wherethe valve is installed.

5. The line must be depressurized, drained,
vented and cooled down before installing
thevalve.

6. Handling and installing of valves, operators
and actuators must be carried out by qualified
personnel.

7. Ensure the valve materials of construction
and pressure/temperature limitations marked
on the identification label are above or equal
to service conditions for which the valve has
beendesigned.

8. It is possible that some cavities within the
valve body may contain some water pockets,
for example after hydrostatic test. If the
water pockets are not drained and the valve
is subject to a temperature gradient, it is
possible that the internal pressure may
exceed the valve allowable pressure rating.
Where such a condition is possible, it is the
responsibility of the purchaser to provide,
or require to be provided for any design,
installation, or operating procedure to
assure that the pressure in the valve will not
exceed that allowed by the pressure rating
ofthevalve.

9. Check correct electric connection of actuator
ifany. Wrong connection may cause danger
and heavily damage the valve.

10. If the actuator is required to be repositioned
on the valve, it is necessary after this operation
to recalibrate the limit switches (this operation
is described in the actuator maintenance
manual). Non-calibrated actuators may
become dangerous and may cause
irreparabledamage to the valve.

1. Gate valves are usually bidirectional. In
case the valve is unidirectional, by means
of devices and/or accessories, the flow
direction is indicated by an arrow applied on
the valve body. The flow direction must be
respected during installation.

2. Unless differently stated on the valve
General Arrangement Drawing, installation
may be carried out:

- for DN ≤ 24”, with stem oriented at an

angle between +/- 90° from vertical

- for DN > 24”, with stem oriented at an

angle between +/- 10° from vertical

3. Gate valves can be installed on horizontal
orvertical pipelines.

4. Remove protective covers from valve end
faces and any transportation protection
applied to the valve stem (if applicable).

5. It is responsibility of the customer,
depending on the installation, to arrange
for a proper support for the valves and/or
the actuator, in particular for valves with
pneumatic actuators.

6. For flanged valves ensure that coupling
flanges and gaskets are clean and
undamaged.

For buttweld valves ensure that the weld

profile is clean and in suitable condition
forwelding.

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FASANI OPERATING AND SAFETY INSTRUCTION

GATE VALVES - CAST GATE VALVES

7. Should there be any possibility of abrasive
particles (welding residues, sand, chemical
cleaning residues etc.) within the piping
system, this could damage valve seating.
The system needs to be thoroughly flushed
and cleaned prior to operation.

8. If valve ends are flanged, ensure that the
valve flanges and pipe flanges are aligned
correctly; bolting should be easily inserted
through mating flange holes. Tighten the
flange bolts using the crossover method.

9. Install the valve in the pipework ensuring
easy access to the operating mechanism
(handwheel, actuator) if applicable, and
ensure a stress-free installation at the
valveends.

10. Welding and thermic treatment temperature
limitations for the valve will be stated
on the general arrangement drawing
(ifapplicable). Consideration must be given
to both these limitations and those indicated
on the valve nameplate. Preheat/local
thermic treatments must be performed in
accordance with the relevant WPS/PQR and
they are under complete responsibility of
the customer.

11. All valves must be partially opened prior
towelding.

12. Pipeline flushing: valve materials are
usually resistant against pickling fluids
(as the pipe material is). If required, check
resistance to pickling with the pickling
company.

If necessary, disassemble valve internal

parts and replace them with special pickling
inserts. Protect sensitive places with paint
or cover plates.

Note: damage may occur to the valve (i.e. to

the valve seats) during high speed flushing
operation, caused by particles that could
be present in the line. For this reason, it
is recommended to arrange the valve in
open position and not to perform any other
actions during pickling and flushing.

The pickling process must take place

without interruptions to prevent
unnecessary impingement due to the
pickling fluid. At the end, remove pickling
fluid completely. Check with particular
care the dead spaces in the valves and the
interstices between pipe sections (perform
inspection if necessary).

Replace gaskets and gland packing which

have been in contact with the pickling
fluid. Carefully clean sealing areas
beforereplacement.

13. Check gland/pressure bolts before
operating the valve(during start up, or even
in service, the bolt tension may decrease).

14. In case of operating temperatures above
200°C (392°F), thermal insulation of the
valve body is recommended.

15. In case of insulation the valve bonnet/gland
must be maintainable.

STORAGE / PROTECTION / SELECTION

State of delivery

Our valves are delivered with protection in
accordance with customer’s specification, or in
accordance with the standard Quality Control
Plan. To protect the valve ends from damage,
the original wrapping and/or covers should be
kept and removed only before installing the
valve to the pipe.

Storage

When the valves have to be stored for some
time before being installed, storage should be
in the original delivery crates with waterproof
lining and/or desiccant in a clean, dry,
indoorarea.
If storage is for a period exceeding six months
the desiccant bags (if supplied) should be
substituted. If valves are stored for longer than
12 months, they should be inspected by our
personnel before installation.

Selection

Ensure the materials of construction of the
valve and pressure/temperature limits shown
on the identification plate are suitable for the
process fluid and conditions. If in doubt contact
your Emerson representative.

Limitations

• Do not use valve for end-of-line function.

Standard safety practices require, for end
of line function, 2 valves or one valve plus
blindflange.

• Do not use on/off valves for control services.

• Do not use process valves as stop valves

forflushing.

• Suggested allowable max pipeline flow

velocity is:
6m/s for liquid
80m/s for gas or steam

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FASANI OPERATING AND SAFETY INSTRUCTION

GATE VALVES - CAST GATE VALVES

OPERATING AND ROUTINE MAINTENANCE

!!Read carefully this document and all warning
labels fitted to the valve before carrying out any
action on the valve!!

Handling

WARNING

• Before lifting or handling the valve, check
thatthere are no execution limits.

• The equipment used for valve handling and
lifting (fasteners, hooks, etc.) must be sized and
selected by taking into account the valve weight
indicated in the packing list and/or delivery
note. Lifting and handling must be made only
byqualified personnel.

• Caution must be taken during the handling to
avoid that the valve passes over the workers, the
equipment or any other place where a possible
fall could cause damage. In any case, the local
safety regulations must be respected.

• To lift the valve, hook the slings to the flange
holes or valve body holes; never lift the valve
through the actuator.

Operation

Gate valves can be operated manually,
automatically or by an external operator
(electric/pneumatic/hydraulic).
All handwheel operated valves, including
valves operated by electric actuator, are
closed by rotating the handwheel clockwise.
The open/close position is indicated by a
position indicator on valve (if fitted) as well as
the indicator arrow on the electric actuator
(if fitted). Actuator travel switches and/or
torque switches are set at the factory prior
to shipment. They must not be altered before
valve or actuator disassembly. In any case,
these operations must be performed by
qualified and skilful personnel, always following
the instructions included in the maintenance
manuals. The electric actuators on wedge
gate valve (ref. VS) are set in closing position
by torque limit switches, while in opening
position they are set by position limit switches.
The electric actuators on parallel slide gate
valves (ref. SP) are set both in closing and
opening position by position limit switches.

Allthe electric connections must be performed
by qualified personnel. During this phase, the
qualified personnel must check the correct
setting of every actuator limit switch. The
valve must be operated only by the relevant
operating instrument, without using any lever
or additional wrench. During start-up of the
plant check gland packing and body/bonnet
flange bolts.

MAINTENANCE

WARNING

• Depressurize the line before starting any
maintenance. Failure to do so may cause
serious personal injury and/or equipment
damage.

• In case the valve should be removed from the
line, depressurize the line with the valve in open
position. Then, close the valve by position.

If valves are fitted with grease nipples, grease
should be applied at 3 month intervals. Exposed
threaded part of the stem should have grease
applied at similar intervals. Lubricate the
actuator according to individual manufacturer
instructions.
No other routine maintenance is required
other than periodic inspection to ensure
satisfactory operation and sealing. Any leakage
from the gland packing should be addressed
immediately by depressurizing the valve
and tightening the gland screws gradually
andevenly.
If no further adjustment is possible or seat
leakage is suspected, the valve will require
a complete overhaul. This must be carried
out after valve or line depressurisation and
drainage in accordance with the relevant
maintenance instruction.

Spare parts

Use always original spares only.
Our valves are identified with a serial number,
which is stamped on the identification plate.
This reference should be quoted in respect of
any after sales queries, spare parts or repair
enquiries/orders.

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FASANI OPERATING AND SAFETY INSTRUCTION

GATE VALVES - CAST GATE VALVES

TAGPLATE REFERENCE

Pos. Description

1 Year
2 Type
3 Size
4 Class
5 N.A.
6 Body
7 Stem
8 Seat
9 Disc
10 Designer
11 Temperature
12 Pressure
13 Shell test
14 Differential pressure set up actuator
15 Temperature minimum
16 Pressure at temperature minimum
17 Temperature maximum
18 Pressure at temperature maximum
19 N.A.
20 N.A.
21 Serial number
22 PED category
23 Fluid
24 N.A.
25 Tag
26 Order number
27 N.A.

Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product.
Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Fasani is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions,
Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.

Th

e contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed
as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and
conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.

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