The shear valves or other dispenser components can be damaged or broken if improper
wrench techniques are used. The installer must use two wrenches to prevent excessive
stress on the shear portion of the valve during tightening.
CAUTION
Connecting Pump/Dispenser Inlet Pipes Installing Units on Island
Page 5-12 MDE-5427E Latitude
™
Installation Manual · July 2022
For additional shear valve information, see Figure 5-10 on page 5-15. Since Latitude units
require special considerations, ensure that you read and understand the information on shear
valves later in this section for those units.
2 To maximize installation ease, Standard Latitude units are shipped with inlet plumbing. The
installer provides and installs the plumbing in the lower Hydraulics Cabinet when required.
Where required, use an approved sealant suitable for the applicable fuel type.
3 Ensure that you remove any shipping plugs or caps that may be present in the pipes, shear
valves, and unions. Leave the mounting bolts a little loose at this time to allow more
adjustment when aligning the piping.
Notes: 1) The contractor-supplied pipe and fittings must
be 1-1/2-inch NPT Schedule 40 black
iron. The Latitude pipe and fittings must be 2-inch NPT Schedule 40 black iron.
Vapor Recovery is 1-inch NPT.
2) Flexible pipes are not allowed within the dispenser.
For information regarding the valve
s or shear valves required for vapor recovery return lines,
consult the Local Regulatory Agencies.
To ensure proper operation of the shear valve during a vehicle collision, all the piping above
the shear valve must be secured to the dispenser cross brace using U-bolts sized according to
the plumbing involved.
Inlet Pipe Assembly
To ensure proper sealing during installation, assembly of pipe nipples to all 1-1/2-inch NPT
inlet tubes must follow the following guidelines.
• Ensure that the threads are of good quality
, full-NPT threads without obvious damage,
for all pipe nipples.
• Assemble using 1/2-inch wide Teflon thread-seal tape.
• Assemble using a high quality
, suitable 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 known as Loctite 567) or equivalent.
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