Orbinox VG08 Instruction manual

ORBINOX SPAIN Pol.Ind. s/n-20270 ANOETA. Tel:[phone] Fax:[phone] e-mail:[e-mail]
ORBINOX CANADA, ORBINOX USA, ORBINOX COMERCIAL, ORBINOX UK, ORBINOX FRANCE, ORBINOX GERMANY,
ORBINOX INDIA, ORBINOX CHINA.
www.orbinox.com
INSTALLATION, OPERATION &
MAINTENANCE MANUAL
MODEL VG08

.
2009-1 EDITION
VG08-2/8
www.orbinox.com
MODEL
V
G08
INDEX Page
0.- Description .........................………................................ 2
1.- Handling ..................................……….......................... 2
2.- Installation .................................………......................... 3
3.- Actuators .....................................………....................... 5
4.- Maintenance .....................................……….................. 5
4.1.- Packing seal replacement ….….….…….............. 6
4.2.- Sealing sleeves replacement ..…....…….............. 6
4.3.- Lubrication …………………….………….…..…... 6
5.- Storage …………................................…..………........... 7
6.- Parts list & drawing ..................................………........... 8
0.- DESCRIPTION
The VG model knife gate is a wafer valve designed for a wide range of industrial applications. The
double-seated design provides bi-directional shut off. The design of the valve body and the two rubber
sleeves (3) makes the VG valve well suited for handling abrasive slurries.
The two sleeves (3) are in permanent contact with each other when the valve is open. While the valve
is either open or closed, the media does not come into contact with the interior of the body. Minimal
leakage may occur from the bottom of the valve during opening and closing cycles.
The VG valve complies with the following European directives:
- DIR 98/37/EC (machines)
- DIR 97/23/EC (PED) Fluid: Group 1 (b), 2 (Cat. I, mod.A)
It may also comply with the directive:
- DIR 94/9/EC (Explosive Atmospheres)
The EX valve may comply with the directive regarding equipment and protective systems for their
use in explosive atmospheres. In these cases, the logotype shall appear on the identification
label of the valve. This label shows the exact classification of the zone where the valve can be
used. The user will be liable for its use in any other zone.
This directive only applies in the following atmospheric conditions:
0,8 bar ≤P ≤1,2 bar
-20ºC < T < 60ºC
Any increase in temperature due to frictional warmth is negligible, since the relative speed of
the moving parts is extremely low.
The risk analysis associated to this directive does not take into account the fluid that goes
through the valve, even when such fluid produces an explosive atmosphere. The user must take
into account the risks that the fluid generates, such as:
- heating of the valve surface.
- generation of electrostatic charges caused by displacement of the fluid.
- shock waves caused by the installation (water hammer), internal crashes generated by the
pellets or the risks due to foreign bodies susceptible of being present in the installation.
1.- HANDLING
When handling an Orbinox valve please pay attention to the following points:
•Do NOT attach lifting gear to the valve actuators or gate guards. They are not designed to
bear the weight, and could easily be damaged.
•Do NOT lift the valve by the valve bore.
This can cause damage to the seating surfaces and seals.

.
2009-1 EDITION
VG08-3/8
www.orbinox.com
MODEL
V
G08
Ideally when using lifting gear to move an Orbinox valve, it should be supported by two or more
eyebolts screwed into the tapped fixing holes in the valve body.
SAFETY WARNING:
•Check that the lifting gear is rated to carry the weight of the valve.
•Make sure the eyebolts have the same thread as the boltholes and that they are well secured.
During installation it is recommended to lift the valve via soft straps. These can be to the upper part of
the valve body.
2.- INSTALLATION
To avoid personal injury or damage to property from the release of process fluid:
-Those in charge of handling and maintenance of the valve must be qualified and trained in
valve operations.
-Use appropriate personal protection equipment (gloves, safety shoes, etc).
-Shut off all operating lines to the valve and place a warning sign.
-Isolate the valve completely from the process.
-Release process pressure.
-Drain the process fluid from the valve and insert the open-closed lockout (if the valve has
it).
-According to EN 13463-1 (15), during installation and maintenance operations, use hand
tools (non electric) with Working Allowance.
Before installation, inspect the valve body and components for any damage that may have
occurred during shipping or storage. Make sure the internal cavities within the valve body are
clean. Inspect the pipeline and mating flanges, making sure the pipe is free of foreign material and
that the flanges are clean.
The valve is bi-directional, and consequently permits installation without considering the flow direction.
But install the valve in the fully open position.
Special care should be taken to maintain the correct distance between the flanges and to ensure that
they are parallel to the valve body.
Use caution to cause damage to the sleeves by forcing the valve into an opening that is too narrow
when the valve is being positioned between the pipe flanges. It is possible to use a lubricant (non-
petroleum-based lubricant such as silicone or ordinary liquid soap) to help slip the valve between the
pipe flanges.
Incorrect alignment of the valve can cause deformations, which can lead to difficulties in operation.
The following table gives the different face to face that the valve has (before and after installation).
50 80 100 125 150 200 250 300 350 400 450 500 600 700 750 800 900
Before
installation 60 63 63 69 69 83 83 89 90 102 103 129 129 190 195 214 234
After
installation 54 57 57 63,5 63,5 76 76 82,5 82,5 95 95,5 121 121 181 187 206 226
DN
Face to face
Additional flange gaskets are not required as the outer face of the sleeve acts against the outlet flange
to provide a tight seal. Sufficient space should be left between the flanges to permit ease of movement
for the valve gate with sleeves installed, without damaging them.

.
2009-1 EDITION
VG08-4/8
www.orbinox.com
MODEL
V
G08
The following table gives the maximum torque values for the valve fixing bolts. Also shown is the
maximum depth (T) allowed for the tapped blind boltholes drilled into the valve body.
DN 50 65 80 100 125 150 200 250 300 350 400 450 500 600
T (mm) 8 8 8,7 8,7 8,7 10,3 12 12 12 15 15 15 22,2 22,2
Kg.m 5 5 5 5 7 9 9 15 15 22 22 32 32 32
The valve can be mounted in any position with regard to the pipe. However, it is advisable to place it
vertically in horizontal pipeline (A) if the installation allows it. (Please consult the technical department
at Orbinox).
With larger diameters (> 300 mm), heavy actuators (pneumatic, electric, etc.), or with the valve
installed horizontally (B) or at an angle (C) on a horizontal pipeline, the installation will require the
construction of suitable supports. (See the following diagram and consult the technical department
at Orbinox).
BB
A
CC
C*
A*
C*
* For these positions please consult Orbinox.
In vertical pipelines, the construction of suitable supports is always required (for further information
please consult the technical department at Orbinox).
Once the valve is installed, test that the flanges have been fastened correctly and that all electrical
and/or pneumatic connections have been properly made.
Where electric accessories are mounted on the valve (i.e. solenoid valves, electro-pneumatic
positioners, etc.), or is in an ATEX zone, the corresponding earth connections must be made before
it is put into operation.
The operation of automated valves is limited only with fitted gate covers.
First, operate the valve with no flow in the pipeline. Then test operation and valve seal with flow.
Once performance has been tested, the valve can be put into operation.
In an ATEX zone, the continuity between the body of the valve and the pipe must be checked (test
in accordance with EN 12266-2 Standard, annex B, points B.2.2.2. and B.2.3.1).
It must also be verified that the pipe is connected to earth and that there is electrical conductivity
between the two pipes (outlet/inlet).

.
2009-1 EDITION
VG08-5/8
www.orbinox.com
MODEL
V
G08
3.- ACTUATORS
3.1.- Handwheel
To open the valve, turn the handwheel anticlockwise. To close, turn the handwheel clockwise.
3.2.- Bevel gear
Bevel gear designed for full force below 30Kg.
To open the valve, turn the handwheel (11) anticlockwise. To close, turn the handwheel
clockwise.
3.3.- Pneumatic
Valves are usually supplied with a double acting pneumatic actuator although, upon request,
we can supply single-acting actuators. In either case the feed pressure can vary between 3,5
and 10 Kg/cm2. However, the size of the actuator for each valve has been designed for a feed
pressure of 6 Kg/cm2.
It is essential for a good maintenance of the cylinder that air should be well dried, filtered and
lubricated.
It is recommended to actuate the cylinder 3-4 times before the start up, once it is installed in the
pipeline.
3.4.- Electric actuator
Depending on the type or make of the electric actuator, specific instructions (i.e. a
manufacturer’s manual) will be supplied.
3.5..- Hydraulic
The valve is sized based on 150bar hydraulic supply pressure. The cylinder stroke is a fixed
length and does not require any adjustments.
Recommendation: actuator maximum manoeuvre speed is 1 second per 25mm of travel.
4.- MAINTENANCE
The valve must not undergo any modifications without a previous agreement with ORBINOX.
ORBINOX shall not be liable for any damages that may arise due to the use of non original parts or
components
To avoid personal injury or damage to property from the release of process fluid:
-Those in charge of handling and maintenance of the valve must be qualified and trained in
valve operations.
-Use appropriate personal protection equipment (gloves, safety shoes, etc).
-Shut off all operating lines to the valve and place a warning sign.
-Isolate the valve completely from the process.
-Release process pressure.
-Drain the process fluid from the valve and insert the open-closed lockout (if the valve has
it).
-According to EN 13463-1 (15), during installation and maintenance operations, use hand
tools (non electric) with Working Allowance.
In an ATEX zone, there may be electrostatic charges in the internal parts of the valve. These
electrostatic charges, caused by the evacuation of the fluid, may entail a risk of explosion. It is the
responsibility of the user to take extreme precautions to minimize this risk.

.
2009-1 EDITION
VG08-6/8
www.orbinox.com
MODEL
V
G08
Safety in an ATEX zone:
- The maintenance personnel must be made fully aware of the risks of explosion, and it is
advisable that they receive specific training regarding ATEX.
- Should the fluid transported create an internal explosive atmosphere, the user must check
periodically the correct water-tightness of the installation
- Clean the valve periodically to prevent dust accumulation.
- Assembly at the end of the line is not allowed.
- Avoid repainting the products supplied.
The only maintenance required is to change the packing seal (4) and the two rubber sleeves (3) as well
as the use of the grease nipples (7) for regular lubrication.
The life of these elements will depend on the working conditions of the valve such as: pressure,
temperature, abrasion, chemical action, number of operations, etc.
To allow optimal operation, the lower part of the valve, accessible through the splashguard (8) should
be cleaned regularly.
If the gate is brushed and cleaned regularly, the wear of the sleeves (3) can be minimised.
4.1. - Replacement of the packing seal (4):
If one or both sleeves (3) have failed, the slurry may injure personnel during this replacement.
Then, the valve should be removed from the pipeline before starting the following steps.
1) Place the valve in close position and insert the open-closed lockout (if the valve has it).
2) Remove the gate guards (for automatically actuated valves only).
3) Release the spindle or stem (9) from the gate (2).
4) Loosen the screws of the yoke (6), extract the open-closed lockout (if the valve has it) and
remove the yoke (without loosing the actuator).
5) Loosen the bolts of the gland follower (5) and remove it.
6) Remove the gate (2) and the old packing seal (4) and clean the stuffing box.
7) Insert the new packing seal (4) lubricated (put silicone-based grease inside of the seal).
Radiused edges go in first.
8) Insert the gate (2) and tighten the gland follower (5).
9) Place the yoke (6) (with the actuator) and screw it.
10) Fix the stem (9) to the gate (2).
11) Remount the gate guards.
12) Carry out some operations with a loaded circuit.
4.2.- Replacement of the sealing sleeves (3):
1) Remove the valve from the pipeline.
2) Remove the sealing sleeves (3).
3) Set the gate (2) in the open position.
4) Clean within the bodies (1), filling the inner part of the body with silicone based grease.
5) Lubricate the new sleeves (3) with the same grease and install them.
6) Remount the valve in the pipeline.
7) Tighten the flanges.
8) Operate the valve a couple of times before leaving it in the position required for the process.
4.3. - Lubrication:
The VG valve must be lubricated and inspected at least once every 2000 operations, using a
silicone based grease for the sleeves.
Twice a year, it is recommended to fill up the stem protector (11) halfway with a calcium-based
grease with the following characteristics: highly water resistant, low ash content, and excellent
adherence.

.
2009-1 EDITION
VG08-7/8
www.orbinox.com
MODEL
V
G08
After maintenance, and in an ATEX zone, it is obligatory to verify the electrical continuity between
the pipe and the different valve components, such as the body, the gate, the supports,... (test in
accordance with EN 12266-2 Standard, annex B, points B.2.2.2. and B.2.3.1).
5.- STORAGE
Storage recommendations:
- Drain valves of any and all liquid.
- Indoor storage in a well-ventilated room (to avoid moisture).
- Valves should not be exposed to temperatures higher than 30ºC, as some soft seal materials can
be damaged when exposed to higher temperatures (sleeves, packing, …).
- If outdoor storage cannot be avoided, cover the valve and protect it from sources of heat or direct
sunlight.
- During the storage, the valve should always be in the open position.
- Avoid dirt and/or moisture contamination of the stem.
- To prevent contamination in the supply ports of the cylinders: insure actuators have appropriate
pipe plugs installed.
- The sleeves must be totally relaxed during the storage and without any heavy objects on them.
- Prior to start-up, clean the gate and apply grease according point 4.3. of this manual.

.
2009-1 EDITION
VG08-8/8
www.orbinox.com
MODEL
V
G08
6.- PARTS LIST & DRAWINGS
1. – BODY 7. – GREASE NIPPLE
2. – GATE 8. – SPLASHGUARD
3. – SLEEVES 9. – STEM
4. – PACKING SEAL 10. – STEM PROTECTOR
5. – GLAND FOLLOWER 11. – BEVEL GEAR
6.–YOKE