Maintenance
6-12 October 2019 16K PLUS
Air Brake Maintenance - Continued
FF2 Full Function Valve Fitting General Installation Guidelines
1. Dependent on sealant type, the basic guidelines for FF2 pipe tting installation is nger tight, plus one or two
turns maximum. Sealant is the variable with the greatest effect on tting installation. Characteristics of different
sealants are as follows:
Teon Pipe Sealant
Teon pipe sealant acts as a lubricant. Fittings go in farther with the same torque. They may not have to go a
full turn past nger tight to seal.
Fittings Without Sealant
Fittings without sealant will seal adequately in plastic ports. They arrive at nger tight in less turns than lubricated
ttings. Unlike lubricated ttings, ttings without sealant require more turns past nger tight to achieve a seal,
typically one or two turns.
Fittings With Dry Sealant
Fittings with dry sealant become nger tight in less turns than ttings without sealant. The dry sealant increases
the tting size so it starts tightening sooner. As the tting is wrench tightened the sealant compresses, Having
variable effects on turns required to seal. Sealing still requires one to two turns past nger tight, but more
attentions must be paid to tting torque.
2. Start ttings straight to prevent crossed threads. Fittings should be started by hand for at least one turn before
use of wrenches.
3. Dry sealant must be applied properly. If dry sealant is applied to the rst thread of a tting, it will be hard to start
the tting straight.
4. Any pipe tting or sealant can be used in the installation of the FF2 Full Function Valve. The consistent use of
one type of sealant will help you install ttings successfully.
5. The use of teon tape on a regular basis is not recommended. Bits of tape break off during installation.
6. When the last thread or hex of a tting is ush with the surface, the tting has been installed past the point required
to seal. Do not install the tting farther!
Max Torque (in-lbs)
1/4”NPTF - 120
3/8”NPTF - 180
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