Specifications

41
Garlock Bolt Torque Values
Grade 5 Bolts
.062" Ring Gaskets ANSI - 300
#
Flanges
Nominal Pipe Size
(IN)
Number of Bolts Size of Bolts
(IN)
Grade 5
Target Torque
(FT - LBS)
3" 8 3/4" 160
4" 8 3/4" 160
5" 8 3/4" 160
6" 12 3/4" 160
8" 12 7/8" 256
10" 16 1" 392
12" 16 1 1/8" 568
14" 20 1 1/8" 521
16" 20 1 1/4" 730
t Be sure of the bolt grade used in the unit. Do not tighten a Grade 5 bolt to
the torque specification of a Grade A bolt, or vise versa. When replacing
bolts, be sure to use the same type of bolt and corresponding nuts. Grade
5 bolts can be used in all cases. Grade A bolts can only be used to replace
Grade A bolts.
e. Tighten bolts in the applicable sequential order (0 - 180°, 90° -
270°, 45° - 225°, 135° - 315°, etc.) at each step until final target
torque is reached (see applicable diagram contained in Appendix
B).
f. Use rotational tightening until all bolts are stable at final torque
level. Two (2) complete times around is usually required.
22. Using an Ohm meter, check from the terminals to ground to assure that no
short circuit exists.
23. Reconnect the leads to the heating element terminals in the same location
as they were installed on the original element.
24. Refill the tank completely with water, carefully checking each gasket and
element for signs of leakage. If leakage is detected, check to assure that
the bolts have been tightened to the proper torque. If this does not stop
leakage, replace the gasket or element.
25. Check to make sure all electrical connections are tight.