Drain Pipes; Vents; Black & Grey Tank Dump Valves - Jayco 2012 Jay Feather Ultralite Owner's Manual

SECTION 7
PLUMBING SYSTEMS
Never travel with full black or grey water
holding tanks. This not only wastes your
fuel but depending on the location of the
tank(s), it can affect your tow vehicle
handling characteristics.
The weight of the holding tank contents is not
calculated into the RV cargo carrying capacity
(this extra weight would reduce your available
cargo capacity). Traveling with full holding
tank(s) could possibly cause you to exceed
the individual tire ratings and/or the RV
GAWR or RV GVWR. Potential damage to
suspension components, such as springs,
tires and axles, could result.
If your RV holding tank(s) are located behind
the axles, the weight of the full tank(s) will
reduce the hitch weight. Trailer sway and
other handling difficulties can be the result of
the hitch weight being too light.
Dump the gray and black water holding tanks
before traveling to avoid carrying unnecessary
weight. If you are dry camping and cannot
immediately empty your holding tanks, reduce
your vehicle speed until you reach a dumping
station.
Before using the RV or after dumping the grey
and black water holding tanks, always add the
proper amount of deodorant to the black
water tank to prevent malodors and help
break down holding tank contents (unless
winterizing). Follow the deodorant bottle or
package instructions. Driving to a disposal
site will normally loosen any accumulated
waste debris or solids from the sides of the
holding tanks.
Do not add automotive antifreeze or
caustic chemicals
detergents into the holding tanks. Although
these products may have a deodorizing
effect, they may damage the plastic and
rubber parts of the plumbing system or the
components.
7 - 10
such as laundry

Drain pipes

The drain pipes have a "P-trap" installed to
help prevent odors from escaping into the RV.
During travel, water from the P-traps may spill
and permit odors into the RV.
water and using a RV approved deodorizing
agent you will dissolve the contents faster and
will keep the drain lines and tanks clean and
free flowing. These chemicals are available at
an RV supply store or your dealer.

Vents

Another important part of this system is the
vent pipes and vents that release air from the
grey and black water holding tanks. The
exterior vent cap is attached to the roof and
must be kept clear of obstructions to perform
as intended. On some models, the vent pipe
may be part of the drainage system referred
to as a "wet vent" (water flows downward as
air flows upward in the same pipe).
B /G W
LACK REY ATER
When connected to the sewer drain line at a
campground, keep the "black tank drain"
valve closed until the holding tank is at least
¾ full. This should provide sufficient water to
assist in complete draining of the black water
holding tank. Repeat as needed.
Never leave the black tank drain in the open
position continuously when connected to the
campground sewer system.
B & G T
LACK REY ANK
There are labels on the exterior of the RV
indicating the location of the grey tank drain
and black tank drain (also called dump
valves). Always drain the black water holding
tank first so the following grey tank waste
water can help rinse any solids or debris from
the dump outlet and sewer hose.
Grey Tank Valve
Fig. 7.8 Black & Grey tank dump valves
JAYCO TOWABLE
By adding
H T
OLDING ANKS
D
RAINS
Black Tank Valve