Reference Information Electrical Requirements
Page 9-8 MDE-5427E Latitude
™
Installation Manual · July 2022
Sealing ‘Y’ Fittings
‘Y’ seals are installed in the conduit runs to minimize passage of vapors, gases, or flames from
one portion of the electrical installation to another through the conduit. Fittings must be
installed in accordance with Articles 501-5 and 502-5 of the NEC and fitting manufacturer’s
instructions.
Gilbarco uses Killark
type EY fittings and recommends them or their equivalent for vertical
conduit runs. The following sealing directions are for Killark fittings only, and instructions
may vary for other manufacturer’s fittings. Read and understand all instructions completely
before you begin.
To seal ‘Y’ fittings, proceed as follows:
1 Remove the close-up plug (see Figure 9-4).
Figure 9-4: Typical ‘Y’ Sealing
Conduit Wires
Close-up Plug
Sealing Compound
Fill to Bottom of Threads
Floor Dam
Conduit
2 Separate conductors and fill the conduit in and around conductors using Killark type “PF”
packing fiber to make a floor dam to hold the fluid sealing compound.
Note: Floor dam must be even with the
conduit stop in the lower hub of the fitting. Ensure that
the conductor insulation is not damaged. Force pack between conductors and hubs,
pushing any shreds of packing fiber away from conductors to prevent leakage path.
3 Use only Killark type “SC” sealing compound with Killark fittings, and do the following:
a Use a clean mixing vessel for every batch of sealant.
b Mix the compound at the rate of three parts compound to one part water by volume.
c Sprinkle the compound in water while stirring, until a thick paste is formed.
d Do not mix more compound than can be used in 15 minutes.
e Continue mixing for at least three minutes, until consistency is just fluid enough to pour
slowly, like thick gravy (not watery).
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