Page 153 - GarlockFluidSealing2010

WARNING:
Properties/applications shown throughout this brochure are typical. Your specifc applica-
tion should not be undertaken without independent study and evaluation for suitability.
For specifc application recommendations consult Garlock. Failure to select the proper
sealing products could result in property damage and/or serious personal injury.
Performance data published in this brochure has been developed from feld testing,
customer feld reports and/or in-house testing.
While the utmost care has been used in compiling this brochure, we assume no respon-
sibility for errors. Specifcations subject to change without notice. This edition cancels
all previous issues. Subject to change without notice.
These tables were developed to be used with
Garlock spiral wound gaskets. They are to be used
only as a general guide. They should not be considered
to contain absolute values due to the large number of
uncontrollable variables involved with bolted joints. If
there is doubt as to the proper torque value to use, we
suggest that the maximum value be used.
All bolt torque values are based upon the use of
new nuts (ASTM A194, GR 2H) and new bolts (ASTM
A193, GR B7) of proper design, acceptable quality and
approved materials of construction as well as metallur-
gy. It is also required that two hardened steel washers
be used under the head of each nut and that a non-me-
tallic based lubricant (i.e. oil and graphite) be used on
the nuts, bolts and washers.
The fanges are assumed to be in good condition
and in compliance with ASME B16.5 specifcations.
Special attention should be given to seating surface
fnish and fatness.
Torque Tables
Only torque wrenches that have been calibrated
should be used. The proper bolt tightening pattern must
be followed (see installation section on page D-42 for
proper bolting pattern) with the desired ultimate torque
value arrived at in a minimum of three equal incre-
ments. All bolts in the fange should then be checked in
consecutive order in a counterclockwise direction.
The contact dimensions listed are taken from the
ID and OD of the windings, which are different from the
ASME ring gasket dimensions.
No provisions have been made in these tables to
account for vibration effects on the bolts. These tables
are based on ambient conditions, without compensa-
tion for elevated temperatures. If conditions different
from these exist, we suggest that further analysis be
performed to determine the appropriate torque values.
D-35