Specifications

40
Note: Bolts used to secure the FTB type heating element assembly in
CEMLINE Electric Water Heaters and Boilers are rated as either Grade
A or Grade 5. Grade A bolts have no marking on the head. Grade 5
bolts are designated by three (3) slash marks on the head (///).
a. Lubricate the bolt threads and the nut faces with a suitable
lubricant.
b. Insert the bolts through the flanges, then start the nuts.
c. Number all bolts so that torquing requirements can be followed.
Note: Appendix B contains drawings depicting the typical flange
configurations (number of bolts, location, tightening sequence, etc.)
for CEMLINE Electric Water Heaters and Boilers. Reference the
applicable drawing for the unit being serviced.
d. Apply torque in twenty percent (20% [1/5]) steps of required final
torque, loading all bolts at each step before proceeding to the next
step. The following tables list ANSI approved target torques for
both Grade A and Grade 5 bolts. The correct target torque can be
determined by the nominal pipe size, number and grade of bolts
used to secure the flange, and the size of the bolt used.
Garlock Bolt Torque Values
Grade A Bolts
.062" Ring Gaskets ANSI - 150
#
Flanges
Nominal Pipe Size
(IN)
Number of Bolts Size of Bolts
(IN)
Grade A
Target Torque
(FT - LBS)
3" 4 5/8" 96
4" 8 5/8" 96
5" 8 3/4" 160
6" 8 3/4" 160
8" 8 3/4" 160
10" 12 7/8" 184
12" 12 7/8" 184
14" 12 1" 250
16" 16 1" 250