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HIGH PERFORMANCE BUTTERFLY VALVE
FIGURE HPA
3
3. VALVE HANDLING AND STORAGE
3.1 HANDLING
3.1.1
Valve shall be properly supported and secured
before moving to prevent possible damage to
valve and property or harm to personnel.
3.1.2 Do not drag the valve on the ground during
transportation. A minimum of one-foot height
from the ground is recommended while moving
the valve.
3.1.3 When handling the valve or the valve package,
bear in mind its weight. Never lift the valve or
valve package near the actuator or operator.
Do not sling crane straps or wires around any
automation components such as lever, gear,
actuator, accessories and tubing to avoid any
load acting on it. Place the lifting device securely
around the valve body while handling the valve.
Refer to Fig. 2.
3.1.4 Valve shall not be handled with the handwheel
fixed to the gear unit. The handwheel shall be
dismantled before handling and transporting of
the valve.
3.1.5 Extreme care shall be taken to check that the
stem and automation components (such as lever,
gear, actuator, accessories, and tubing) are not
bent, pinched or damaged during handling.
3.2 STORAGE
3.2.1 Clean the valves and ensure that end protectors
are in place before the valves are stored, as dry
contaminants like dust, sand, grit, etc. can scratch
the metal seating surfaces and the soft inserts,
leading to leakages on full pressure operation.
3.2.2 Valves shall be stored in an indoor/covered area
which is dust free, dry and well ventilated to
protect from rain and storm. Refer to Fig. 3.
3.2.3 The valve shall always be maintained in an
ambience with temperature higher than the dew
point with a preferred range from 40°C to 29°C at
the storage location to avoid collection of water
droplets on the valve surface.
3.2.4 Do not keep the valve directly on the floor. Valve
shall be placed on a wooden pallet with at least 6"
from the floor.
3.2.5 Care should be exercised not to damage the
extended portions of the stem housing and
automation components during storage.
3.2.6 Do not apply tar, grease or any other foreign
materials inside the valve aside from proper
lubrication, as it could impair valve performance.
CORRECT
WRONG
Fig. 2
Lifting the valve
CAUTION:
•
Improper storage and/or handling may cause valve assembly damage or deformation, which will affect
performance of the valve. Disc/seat damage can impair sealing capabilities and increase operation torque.
•
Valve must not be stored for more than 2 years.
•
When valves are stored for a long time, open and close the valve once every 3 months.
DO NOT:
•
Store the valve outdoors.
•
Store valve without end protectors.
•
Place or drag the valve on the floor.
•
Place and/or handle valve in positions that may
damage the valve or its accessories.
Fig. 3
Properly covered storage
