3
1
GENERAL
1. These installation and maintenance instructions apply
to all sizes and ratings of the G110 Series control valves
regardless of the type of trim used.
1.1
Warning
FOR YOUR SAFETY AND PROTECTION, IT IS IMPORTANT
THAT THE FOLLOWING PRECAUTIONS BE TAKEN PRIOR TO
REMOVING THE VALVE FROM SERVICE OR BEFORE ANY DIS-
ASSEMBLY OF THE VALVE:
1. AT ALL TIMES DURING THIS ENTIRE PROCEDURE, KEEP
HANDS OUT OF THE VALVE. A REMOTELY ACTUATED
VALVE COULD CLOSE AT ANY TIME AND RESULT IN
SERIOUS INJURY.
2. KNOW WHAT MEDIA IS IN THE LINE. IF THERE IS ANY
DOUBT, CHECK WITH THE PROPER AUTHORITY.
3. WEAR ANY PROTECTIVE CLOTHING OR EQUIPMENT
NORMALLY REQUIRED WHEN WORKING WITH THE
MEDIA INVOLVED.
4. DEPRESSURIZE THE LINE AND VALVE AS FOLLOWS:
A.) OPEN THE VALVE AND DRAIN THE LINE.
B.) CLOSE AND OPEN THE VALVE TO RELIEVE ANY
RESIDUAL PRESSURE THAT MAY BE IN THE VALVE
PRIOR TO REMOVING THE VALVE FROM SERVICE.
C.) AFTER REMOVAL AND PRIOR TO ANY DISASSEMBLY,
DRAIN ANY REMAINING MEDIA BY PLACING THE
VALVE IN THE VERTICAL POSITION AND CAREFULLY
OPENING AND CLOSING THE VALVE SEVERAL TIMES.
5. TRIM AND BODY RATINGS — THE PRACTICAL AND
SAFE USE OF THIS PRODUCT IS DETERMINED BY BOTH
THE TRIM AND BODY RATINGS. READ THE NAME TAG
AND CHECK BOTH RATINGS. THIS PRODUCT IS AVAIL-
ABLE WITH A VARIETY OF TRIM MATERIALS. SOME OF
THE TRIM MATERIALS HAVE PRESSURE RATINGS THAT
ARE LESS THAN THE BODY RATINGS. ALL OF THE BODY
AND TRIM RATINGS ARE DEPENDENT ON VALVE TYPE
AND SIZE, TRIM MATERIAL, BOLTING MATERIAL, AND
TEMPERATURE. DO NOT EXCEED THESE RATINGS.
1.2
Introduction
THE FOLLOWING INSTRUCTIONS SHOULD BE THOROUGH-
LY REVIEWED AND UNDERSTOOD PRIOR TO INSTALLING,
OPERATING OR PERFORMING MAINTENANCE ON THIS
EQUIPMENT. THROUGHOUT THE TEXT, SAFETY AND/OR
CAUTION NOTES WILL APPEAR AND MUST BE STRICTLY
ADHERED TO, OTHERWISE, SERIOUS INJURY OR EQUIP-
MENT MALFUNCTION COULD RESULT.
1. A regularly scheduled training program is conducted
to train customer service and instrumentation person-
nel in the operation, maintenance and application of
control valves and instruments. Arrangements for
these services can be made through your local repre-
sentative. When performing maintenance, use only
Metso Automation replacement parts. Parts are obtain-
able through your local representative. When ordering
parts, always include model and serial number of the
unit being repaired. The model number, serial number,
size and rating of the valve are shown on the identifi-
cation tag located on the actuator.
1.3
Storage
1. When a valve is to be stored for an extended period,
remove the line connection covers and spray a light
coating of machine oil on the internals. Replace the
covers to prevent foreign matter from entering the
valve body. Exposed parts should also be sprayed with
a protective film of oil.
2. A packing list, containing a complete description of the
valve and accessories (such as a valve positioner, etc.),
accompanies each valve when shipped. This list should
be checked soon after the shipment has been received.
3. When hoisting the valve, make sure that ropes or
cables are of sufficient strength and are positioned so
that any tubing or accessories will not be damaged.
1.4
Unpackaging
1. Care must be exercised when unpacking the valve to
prevent damage to the accessories and component
parts. Should any problems arise, contact your local
representative.
2
INSTALLATION
1. The best performance will be obtained if the valve is
installed in a straight run of pipe away from elbows,
restrictors or other areas where abnormal velocities
may occur. The valve may be installed in any position,
however, the vertical upright position is strongly rec-
ommended.
2. There should be at least one foot of clearance above
the actuator in order to perform in-line maintenance
operations.
3. A conventional three valve bypass should be installed
for systems which must continue in service during
periods of control valve maintenance.
4. Care should be taken in rigging the valve for installa-
tion to assure that instruments or instrument lines are
not damaged.
5. Before installing the valve in the line, clean the piping
and the valve of all foreign material such as welding
chips, scale, oil, grease or dirt. Gasket surfaces should
be thoroughly cleaned to insure leak-proof joints.
6. Pipe threads should be clean and sharp. Apply pipe
compound or joint sealer to the male threads only. Be
sure that the compound or sealer is compatible with
the process fluid.
7. The valve must be installed so that the controlled sub-
stance will flow through the valve in the direction indi-
cated by the flow arrow located on the body.
8. Where insulation of the valve body is required, DO NOT
INSULATE THE VALVE BONNET.
9. An air supply pressure regulator with filter should be
installed in the air line ahead of any valve-mounted
instruments. Factory mounted positioners are piped
and adjusted at the factory.
