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DV-1/4 Turn IOM - 11/06
0.2 TRANSPORT AND STORAGE
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WARNING
The universally recognized technical standards
and the regulations regarding prevention of
accidents must be observed at all times when
handling.
0.2.1 TRANSPORT
The goods have to be carefully handled in order to
prevent damage.
The end flange caps supplied are to be fitted to the
valve as applicable.
0.2.2 UNPACKING
Unpack the shipment, check to make sure that all
contents are present and undamaged.
0.2.3 STORAGE
If the valve is not to be installed immediately following
delivery, it must be properly stored.
Storage should be in a dry room at a temperature as
constant as possible. Product should not be stacked
on top of one another.
Storage over a longer period may necessitate
individual moisture proof packing. This is dependent
on the local conditions.
0.2.4 DISPOSAL, RECYCLE OR RETURN
SHIPMENT
The personnel responsible for disposal of the product
or associated components are to comply with
federal, state and local requirements.
If the return shipment is required, contact
manufacturer at the address listed on backpage for
specific instructions.
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WARNING
The operator of valves used for aggressive or
toxic media such as caustic chemicals must
ensure that these are well flushed and cleaned
before being handed to the maintenance
personnel. This is particularly important when
returning to the product manufacturer,
disposing of or recycling the product or its
component parts. MSDS are required for
authorization to return valves to the
manufacturer.
1.0 INSTALLATION
1.1 BONNET ASSEMBLY TO BODY INSTALLATION
This section to be followed when assembling a bonnet
assembly including diaphragm and backing cushion to
a valve body.
1.1.1 Prior to assembly to the body, the
diaphragm/backing cushion should be resting flat
against the bonnet flange. The compressor should be
extending just short of the full closed position. Rotate
the input shaft to achieve this position.
1.1.2 Position the bonnet over the studs and onto the
body. Drop washers over the studs.
1.1.3 After the bonnet assembly is positioned over the
studs and rests against the body, lightly lubricate the
studs with Chevron Poly FM2 just above the bonnet
flange (i.e. the location at which the nut will engage the
stud when tight against the bonnet).
1.1.4 Assemble nuts finger tight. Final tightening of
bonnet fasteners shall be done by hand. Pneumatic
tools are not permitted. Bring the torque up gradually
with at least 3 passes on each nut. Nuts shall be
tightened in a crisscross pattern, so as to compress
the diaphragm evenly. Tighten nuts securely to 10
ft-lbs (120 in-lbs, 13.5 N-m).
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CAUTION
Nut assembly torque requirement of 10 ft-lbs
(120 in-lbs, 13.5 N-m) is critical to the success
of the valve's sealing function. Excessive
torque decreases the valve's sealing function
and increases the amount of effort required to
actuate the valve.