TLS-IB Site Prep Manual
Mag Probe Installation
24
Figure 20. Mag Probe AST Example Installation
Figure 21. Installing a riser adaptor beneath the metal cap and adapter ring
Use bushing and body of grip
fitting supplied with probe and
Adaptor nut supplied with
AST kit.
Epoxy seal per NFPA specs
Flexible metal conduit
supplied with AST kit
Weatherproof junction box with
1/2" NPT threads (16 cubic inch
minimum)
Rigid conduit
Liquidtight
fittings from
AST kit
Mag Probe
(rests on bottom)
probes\astpbins.eps
Riser pipe: 2-, 3-, or 4'' API
schedule 40 - depending on
probe type
A
A = 14" minimum for global mag
plus/mag plus probes. When
installing a probe longer than the
the tank diameter, increase this
minimum dimension to compensate.
(Example: a 7'-6'' diameter tank will
use an 8' probe, in which case you
must add 6" to minimum riser length
'A', i.e., 20").
Split-Ring Collar
(P/N 576008-617)
required if probe
enters the riser.
Top view
Side view
3/4" ID
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Tank
probes\riseradapt.eps
Riser adaptor
(Phil-Tite M/F4X4,
or equivalent)
Adapter ring from kit
Metal cap from kit