3.1 THREADED
BULKHEAD FITTING
3.1.1 Remove the nut (C) from the fitting body (A) and gasket
(B). See Figure 3.1 for part identification.
Figure 3.1
3.1.2 Working from inside the tank, slide the fitting body
(A) through the hole in the tank. The gasket (B) should be between the fitting body flange and the inside tank
wall. Install the nut (C) on the fitting threads protruding on the outside of the tank.
3.1.3 To obtain proper gasket compression for bulkhead fitting
installation, tighten the fitting nut hand tight (check to see if it engages the tank wall). Tighten the nut an
additional 3/ 4 turn for fittings less than 1 in., or 1/ 3 turn for fittings 1 in. or larger. A light lubricant,
such as PAM cooking spray, is recom mended to prevent thread seizing on bulkhead fittings. Inspect the gasket to
make sure it is fully contacting the inner surface of the fitting body flange and the inside tank wall. Gasket
compression should be between 25 -50%. Recheck fitting tightness periodically.
3.2 SELF-ALIGNING
THREADED BULKHEAD FITTING
3.2.1 Follow the same procedures as detailed under threaded
bulkhead fitting installation steps 3.1.1 -3.1.3.
3.2.2 Piping should be installed into the fitting ball with
an appropriate thread sealant (i. e. Teflon 7 pipe sealant). Adjust the piping to the required angle (within the
limits of the fitting). When the piping has been located as required, tighten the PVC ball retainer ring located
on top of the PVC ball.
3.3 BOLTED FLANGE
FITTING
3.3.1 The bolted flange fitting shall be constructed with
2 ea. 150 lb. flanges (C1 and C2), 2 ea. 150 lb. flange gaskets (D1 and D2), the correct number of full threaded
bolts (A), bolt gaskets (B), flat washers (E), lock washers (F), and hex nuts (G) for the flange specified. NOTE:
If the tank wall thickness is greater than or equal to 0.75", the inner flange (C1) and the inner flange gasket
(D1) may be omitted in certain low stress applications only. Please consult factory prior to omitting any components
or the tank warranty may be voided. Refer to Figure 3.2 for part identification.
3.3.2 Disassemble the fitting as shipped by removing the
bolt's hex nuts, lock washers, flat washers, outer flange, and outer flange gasket. Locate the fitting hole on
the inside of the tank and insert the bolts (still installed on the inner flange and gasket) through the drilled
holes in the tank. Place the outer flange gasket over the bolts on the outside surface to the tank. Place the outer
flange over the outer gasket and bolts. Install the flat washers, lock washers, and hex nuts on the bolts. Check
to make sure the fitting assembly appears as shown in Figure 3.2.
Figure 3.2
3.3.3 To obtain proper gasket compression, tighten all the
fitting nuts hand tight with a deep socket using the bolt tightening sequence shown until the gaskets engage the
tank wall and the lock washers are compressed. Tighten each nut an additional 3 turns (2 turns if the inner flange
and gasket are not utilized) using the same sequence (do not tighten more than 1 turn at a time). A light application
of lubricating oil is necessary to prevent thread seizing on S. S. bolts. Gasket compression should be between
25 -50%. Recheck fitting tightness periodically.
3.4 BOLTED STAINLESS
STEEL FITTING
3.4.1 The bolted stainless steel fitting shall be constructed
with 1 ea. inside flange with studs (A), 2 ea. Fitting gaskets (B), 1 ea. outside flange (C), and the correct number
of lock washers (D), and hex nuts (E) for the fitting specified. Refer to Figure 3.4 for part identification.
Figure 3.4
3.4.2 Disassemble the fitting as shipped by removing the
hex nuts, lock washers, outside flange and out-side flange gasket. Locate the fitting hole on the inside of the
tank and insert the fitting's studs through the drilled holes in the tank. A gasket (B) should be between the inside
fitting flange and the inside tank wall. Place the outside flange gasket and outside flange over the studs on the
outside surface of the tank. Install the lock washers and hex nuts on the studs. Check to make sure the fit ting
assembly appears as shown in Figure 3.4.
3.4.3 To obtain proper gasket compression, tighten all the
fitting nuts hand tight with a deep socket using the bolt tightening sequence shown until the gasket engages the
tank wall and the lock washers are compressed. Tighten each nut an additional 1-1/ 4 -2 turns using the same sequence
(do not tighten more than 1 turn at a time). Do not apply more than 15 ft. -lbs. of torque. A light application
of lu-bricating oil is necessary to prevent thread seizing on S. S. bolts. Gasket compression should between 25
-50%. Recheck gasket tightness periodically.
3.5 Sierra Sales
UNITIZED MOLDED OUTLET -(SUMO TM ) (PATENT NO. 5,374,026)
3.5.1 The SUMO fitting shall be constructed with 1 ea. smaller
o-ring (A), 1 ea. larger o-ring (B), and 1 ea. SUMO adapter (C). Refer to Figure 3.5 for part identification. NOTE -The tank is shipped with a shipping stabilizer installed in the SUMO outlet. NEVER
move the container without the shipping stabilizer installed.
Figure 3.5
3.5.2 Once the tank has been properly placed on its foundation,
remove the shipping stabilizer and clean away any dirt or debris from the SUMO outlet threads and o-ring seats.
Use only a soft moist cloth. NEVER USE A TOOL THAT COULD SCRATCH THE O-RING SEATS.
3.5.3 Install the smaller o-ring inside the SUMO molded-in
fitting. Make sure it is placed in the o-ring seat area evenly. Carefully stretch the larger o-ring enough to install
it on the SUMO adapter. Only a SII SUMO adapter may be used. Use of a non-approved adapter may void warranty. The
o-ring may be lubricated with a suitable lubricant such as water. Screw the adapter in until the step on the adapter
is flush with the tank wall. Do not over-torque the adapter (25 ft. -lbs. of torque maximum). Figure 3.5 shows
a sectional view of an assembled SUMO fitting.
3.5.4 Once the SUMO adapter is installed, other components
may be attached to the adapter. A union or flange adapter with a flexible expansion joint should be installed as
close to the tank as possible to allow for future disassembly. The SUMO fitting must have adequate clearance for
any piping accessories and allow for a ±5° outlet angle change. Consult factory for pad and/ or accessory
clearance questions. A notch in the tank support pad may be necessary (see Figure 2.2).
3.6 SIPHON TUBE
FITTINGS
3.6.1 Siphon tubes may be added to the fittings specified
in sections 3.1, 3.3, 3.4, and 3.5. Siphon tubes shall be customer installed with the tank in a vertical position
after fitting installation.
3.6.2 PVC and CPVC siphon tubes need to be solvent welded
with the proper solvent cement into the socket of a previously installed fitting. Threaded siphon tubes need to
be threaded in place with Teflonu pipe sealant applied to the threads prior to the fitting being installed.
Figure 3.6
