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ADCA
VAL
S
TEAM
ADCA
IMI M3HP.10 E 03.15
START UP
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Current regional safety regulations should be take in to account and followed.
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Protective insulation and warning notice may be required.
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Until the start up of an existing or a new plant, the following must be checked:
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All works are completed;
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The valve is correctly installed;
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All the necessary safety devices have been installed;
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At start up, the presence of small particles in the fluid may cause an imperfect closure of the seat. If this
occurs, proceed to an accurate cleaning.
Procedure:
1. Stop valve should be closed.
2. Turn the lever slowly to open the stop valve and prevent hammering effects or sudden pressure increase on
downstream equipments and pipeline. M3HP ball valves are 1/4 turn open/close valves. When the lever is in
line with the pipeline the valve is open, when is perpendicular it's closed.
3. The valve is ready.
Periodical checking:
24 hours after the start up, it is recommended to check pipe connections for leaks and retighten the connections
if necessary.
MAINTENANCE
We recommend the ball valves to be serviced as necessary. Ball valves should be checked periodically (at least
yearly), to verify if they are operating correctly, if they have any leakages and to clean the internal parts if
necessary.
When reassembling make sure that all gasket faces are clean and use a new gasket if required.
Lubrication must be avoided for oxygen service. When it’s necessary, only the lubricants recommended by the
manufacture should be use.
During maintenance operations care should be taken to avoid any scratches or damage in the ball surfaces,
seals and seats. Leakage and other malfunctions may result from that.
Maintenance should proceed as follows:
Disassembling the valve for seats, body seals or ball replacement:
1. Unscrew all the bolts (17) from the body;
2. Take out the valve body with the ball (6) in the open position;
3. Put the ball in the close position;
4. Carefully remove the body seals (9) and seats (7,8) without damaging their surfaces.
Caution to prevent the
ball to fall off;
5. Carefully remove the ball (6) from the valve body without damaging the surfaces;
6. Inspect the body seals, seats and ball for any damages and replace for new parts if necessary;
