GILBARCO VEEDER-ROOT Encore 300 Series, Руководство по установке

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MDE-3985L Encore® Installation Manual · May 2006 Page 83
Appendix: Inlet Pipe Assembly
5 – Appendix: Inlet Pipe Assembly
To ensure proper sealing during installation, assembly of pipe nipples to all 1-1/2 inch NPT
inlet tubes should follow the following guidelines.
• Ensure the threads are good quality, full-NPT threads without obvious damage for all pipe
nipples.
• Assemble using 1/2-inch width Teflon thread-seal tape.
• Assemble using a high-quality, UL-approved sealant that will not harden or wash out with
the fuel being dispensed. Use Loctite
®
PN 56747 (TM 567) PST Pipe Sealant with PTFE
(also know as Loctite 567) or equivalent.
Assemble the inlet pipe assembly as follows.
1
Starting the Teflon tape 2 to 3 threads from pipe nipple end, wrap inlet pipe with Teflon tape
(12 to 15 revolutions). Refer to
Figure 5-1 .
Figure 5-1: Inlet Pipe Wrapped with Teflon Tape
2
Apply a moderate bead of sealant completely around the nipple end at the edge of the Teflon
tape. Refer to
Figure 5-2 .
Figure 5-2: Bead of Sealant at Edge of Teflon Tape
3
After the sealant has been properly applied, tighten the connection to 130 foot-pounds
minimum (65 pounds of force on a 2-foot wrench or 33 pounds of force on a 4-foot wrench).
Do not use tape at the very end of the pipe nipple to avoid tape entering the dispenser hydraulics.
Tape in the hydraulics can cause failures of valves, nozzles or other significant problems.
CAUTION
Teflon tape started 2 - 3
threads away from pipe
nipple end
Teflon tape wrapped
12 - 15 revolutions
bead of sealant at edge
of Teflon tape
Teflon tape applied
in step 1