Econ 290A User manual

Installation & Operation Manual
Proven Quality since 1892
ECON gate valves Fig. 290, 290A, 290AA, 3290 www.eriks.com
Rev. 1
Content
1. ERIKS operating companies
2. Product description
3. Requirements for maintenance staff
4. Transport and storage
5. Function
6. Application
7. Installation
8. Maintenance
9. Service and repair
10. Troubleshooting
11. Removal
1. ERIKS operating companies
ECON gate valves are being delivered by several ERIKS operating companies on a worldwide
basis. In this manual these will be referred to as ‘ERIKS’, the individual terms of delivery of the
ERIKS operating company having executed the order are applicable.
2. Product description
The ECON gate valves are designed according the information in our latest catalogue or see our
website www.eriks.com and should be used in accordance with the applicable pressure-
temperature rating as stated on this website. Econ gate valves are provided with casted markings
according to EN 19. The marking makes the identification of the valve easier and contains:
- size (inch)
- pressure rating class
- body and bonnet material marking
- CE marking when applicable
- ECON logo
3. Requirements for maintenance staff
The staff assigned to assembly, operating and maintenance tasks should be qualified to carry out
such jobs and in any circumstance, ensure personal safety.
4. Transport and storage
Transport and storage should always be carried out with the wedge complete closed and the
valves should be protected against external forces. The valves should be stored in an unpolluted
space and should also be protected against all atmospheric circumstances. There should be taken
care of the temperature and humidity in the room, in order to prevent condensate formation.
5. Function
ECON gate valves are designed to stop the flow of a medium. The valve is closed by turning the
hand wheel clockwise; don’t use tools to increase the torque on the hand wheel.
The valves can only be used with the wedge fully open or closed; please don’t use a gate valve for
regulating the medium.
6. Application
ECON gate valves are widely used for water, oil, air and gas for shut off or connection of pipeline.
The valves are designed for standard operating conditions. For the use of extreme conditions e.g.
aggressive or abrasive media, it is recommended to mention this at the ordering stage, to verify
whether the valve is suitable. The installation designer is responsible for the gate valve selection,
suitable for the working conditions. The valves are unsuitable, without written permission of an
ERIKS company, to apply for hazardous media as referred into Regulation (EC) No 1272/2008.

Installation & Operation Manual
Proven Quality since 1892
ECON gate valves Fig. 290, 290A, 290AA, 3290 www.eriks.com
Rev. 1
7. Installation
During the assembly of the ECON gate valves, the following rules should be observed:
- the valves should be checked before installation if the have not any defects caused by
transport and/or storage.
- make sure that the applied valves are suitable for working conditions, medium used in the
plant and the right system connections, according to pressure and temperature limits.
- protective hole plugs must be removed.
- the standard installation position for the gate valves is with the stem vertical and in upright
position.
- the interior of the valve and pipeline must be free from foreign particles.
- the valves with threaded ends should be assembled in the pipeline in closed position,
make sure the wire ends of the pipe and the valve according to the same standard, and
also free from pollution. Clamp the valve only on the hex clamping surfaces at the
connection ports during assembly.
- when necessary, use a thread sealant, PTFE tape for low temperature applications and
Grafoil for high temperature applications.
- steam line systems should be designed to prevent water accumulation.
- install pipelines so that damaging transverse, excessive vibrations, bending and tensional
forces are avoided.
- for easy operating the clear distance around the hand wheel shall not be less than
100MM.
- before plant startup, especially after repairs carried out, flash out the pipeline.
8. Maintenance
Before starting any service jobs, make sure that the medium supply to the pipeline is cut off,
pressure was decreased to ambient pressure, the pipeline is completely cleaned and ventilated
and the plant is cooled down. Always keep safety instructions in mind and take all personal safety
precautions.
During maintenance, the following rules should be observed:
- always keep personal safety precautions in mind and always use appropriate protection
e.g. clothing, masks, gloves etc.
- be alert that the temperature still can be very high or low and can cause burns.
- check the valve on all possible leaking possibilities.
- check if all nuts, are still fastened.
- dust, grease and medium residual, must be frequently cleaned of the valve body and all
moving parts, such as stem to maintain all operating functions.
- if there is a leakage across the stem, gradually tighten the stuffing box sealing, evenly in
increments by means of the hex. nut, until leaking stops.
- if required repack the stuffing box gasket, for safety reasons we recommend that the
valves only can be repacked when depressurized, drained and ventilated.
- when cutting the new stuffing box packing from the roll, make sure that the ends are cut
with a slant.
- check if the wedge still open and close in a proper manner.
- the thickness of the body must be checked to ensure safety operation at an interval of at
least three months.

Installation & Operation Manual
Proven Quality since 1892
ECON gate valves Fig. 290, 290A, 290AA, 3290 www.eriks.com
Rev. 1
9. Service and repair
All service and repair jobs should be carried out by authorized staff, using suitable tools and user
shall use valve packing and other parts of the same size and material as the original one.
- welding (repair) and drilling in the valve is forbidden.
- it is forbidden to open the bonnet or replace the bolt, nut or packing when the valve is
under pressure.
- before reassembling the bonnet, remember that the bearing surface must be cleaned and
a new gasket must be inserted.
- after replacement of gasket or nut, it is necessary to check the valve operation and
tightness of all connections. Tightness test should be carried out.
- after installation, the valve should be checked and maintained periodically at least every 3
months, depending on the medium.
10. Troubleshooting
It is essential that the safety regulations are observed when identifying the fault.
Problem
Possible cause
Corrective measures
No flow
Dust caps were not removed
Remove dust caps
Little flow
Valve not completely open
Open valve completely
Piping system clogged
Check piping system
Valve difficult to open
Stem dry
Grease stem
Stuffing box packing too tight
Slacken nut of gland
Wrong direction of rotation
Turn anti-clockwise to open
Leakage across the stem
Stuffing box gland slack
Tighten stuffing box gland, if
necessary renew stuffing box
packing
Leakage across valve seat
Valve not properly closed
Pull hand wheel tight without
tools
Seat damaged by foreign
particles
Replace valve, or repair the
seat
Medium contaminated
Clean valve and install dirt
screen
Leakage between bonnet flange
Bonnet is loose
Proper tighten bonnet
Bonnet gasket failure
Replace bonnet gasket
Operating failure
Packing too tight
Loosen gland flange nuts
Thread of stem nut over worn
Replace stem nut
Stem bended
Rectify or replace stem
Body and bonnet broken and
leaking
Water hammer
Careful operation to prevent
suddenly stopping Pumping and
rapidly shutting
Broken because of freezing
Drain the water in the winter
when valve is not used
Wedge failed to open
Wedge blocked
Don’t use too much force
Stem is overheated and blocks
the wedge
When the valve is closed and
the pipeline is over-heated,
rotate the hand wheel
somewhat counter clockwise for
unload at interval

Installation & Operation Manual
Proven Quality since 1892
ECON gate valves Fig. 290, 290A, 290AA, 3290 www.eriks.com
Rev. 1
11. Removal
All dismantled and rejected valves cannot be disposed with household waste. The valves are
made of materials which can be re-used and should be delivered to designated recycling centers.
General warning:
General note for products which may be used for seawater:
Although our products can be used in seawater systems it should always be noted that, in case of
installation in a piping system made of materials which are frequently used because of their excellent
seawater resistance (e.g. Cunifer), large potential differences may occur possibly causing corrosion
which could permanently damage the proper functioning and integrity of our product.
A combination of different materials should always be mentioned prior to the purchase of our products
in order for us to give the best possible advice on a safe functioning.