L P Gas; Fill Valve - Nucamp T@B 320 Manual

climates vary, and winter maintenance needs may
be affected.
Be sure to read the literature supplied with
plumbing components, such as the water pump, for
troubleshooting tips. Also, remember that it is
possible for an electrical problem to cause water
system problems. Lack of power to the pump can be
caused by a variety of reasons.
If you are unsure of how to locate and/or repair a
plumbing problem, it is best to have your dealer or a
qualified plumber who is familiar with the camper
water system to inspect the system and perform any
repairs needed.
LP Gas (LPG)

Fill Valve

The LPG tanks are equipped with
fill valve connections RV Type I
Acme. The large, green, nylon
swivel nut is a right-hand thread and is designed for
hand operation only.
The valve features an internal spring-loaded module
that will not allow gas to flow from the cylinder
until a positive seal has been made at the
connection. The valve outlet has 1-5/16 in. Acme
threads on the outlet exterior, and female POL, left-
handed threads on its interior. This feature allows
for connection of the new wrench less, right-
handed, Acme RV connection while still
accommodating the standard left-handed POL
fittings used for filling propane cylinders.
The mating, green swivel nut and brass nipple also
incorporate new features: the green nylon nut
swivels on a black bushing that is heat-sensitive.
Between 240 and 300°F, the bushing will yield
(melt) allowing the spring-loaded module in the
valve to push the brass nipple back (approximately
1/4 in.), closing the module and stopping the flow
of gas from the cylinder. Inside the brass nipple is a
flow-limiting device designed to sense excessive
gas flow. If an excessive flow is sensed, the flow-
limiting device shuts the flow down to a maximum
of 10 SCFH (Standard Cubic Feet per Hour) or less.
This is also referred to as the bypass flow.
Bypass flow is extremely important in the proper
operation of this connection. The flow-limiting
device may activate if the cylinder valve is opened
quickly. When all appliances are off, the bypass
flow allows the pressure downstream from the flow-
limiting device to equalize. When pressure is
equalized, the flow limiting device will supply
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