Heat exchanger (reservoir which holds glycol and h20). [Around 3 feet long]
...
connected to a nipple (1.5" NPT) [2 inches long]
...
connected to a flange
*Using Loctite Sealant (rated for temperatures up to 300 degrees F)
Torquing unit with a lot of force
*We can only tighten them 1 or 1.5 revolutions by hand before we have to use a 14 inch wrench. We use a 3 foot cheater bar to torque the nipple/flange
*Unit is tested with 30PSI after letting sealant dry for 24 hours.
-My thought is that the heat exchanger and flange female threads are not FNPT. They have a very slight, barely measurable taper (maybe 20 thousanths of an inch). Any suggestions?
...
connected to a nipple (1.5" NPT) [2 inches long]
...
connected to a flange
*Using Loctite Sealant (rated for temperatures up to 300 degrees F)
Torquing unit with a lot of force
*We can only tighten them 1 or 1.5 revolutions by hand before we have to use a 14 inch wrench. We use a 3 foot cheater bar to torque the nipple/flange
*Unit is tested with 30PSI after letting sealant dry for 24 hours.
-My thought is that the heat exchanger and flange female threads are not FNPT. They have a very slight, barely measurable taper (maybe 20 thousanths of an inch). Any suggestions?
