Installation & Operation Manual
Proven Quality since 1892
ECON ball valves Fig. 7422, 7442, 7522, 7542, 7622, 7642, 7722, 7742
www.eriks.com
Rev.4
Page 6
9. Service and repair
All service and repair jobs should be carried out by authorized staff, using suitable tools and user
shall use genuine valve parts.
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Welding repair and drilling of the valve is forbidden.
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It is forbidden to disassemble the valve when the valve is under pressure.
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Before you replace seats or seals you have to clean the working areas where you have to
put the seats or seals.
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After replacement of the ball valve it is necessary to check the valve operation and
tightness of all connections. Leakage test should be carried out.
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After installation, the valve should be checked and maintained periodically at least every 3
months, depending on the medium. A (partial) operation cycle of the valve is
recommended.
10. Troubleshooting
It is essential that the safety regulations are observed when identifying the fault.
Problem
Possible cause
Corrective measures
No flow
The ball valve is closed
Open the ball valve
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 packing too tight
Slacken stem nut
Wrong direction of rotation
Turn counter clockwise to open
Ball seat rings damaged by
foreign particles.
Replace the seat rings
Expanded medium behind the
ball
Cool down the ball valve
Leakage across the stem
Stem packing gland slack
Tighten stem nut, if necessary
replace the ball valve
Leakage across valve seat
Valve not properly closed
Pull lever tight without tools
Seat damaged by foreign
particles
Replace the seat rings
Medium contaminated
Clean valve and install dirt
screen
Operating failure
Packing too tight
Loosen stem nut
11. Removal
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 advise on a safe functioning.
