Holding Tanks; Draining The Tanks - venture SPORT TREK Owner's Manual

Holding Tanks

The final parts of your sanitation system are the holding tanks for waste
materials and water. These are located below the floor of your coach.
Gray Tank. Waste water from the bath tub, shower and sinks will drain
into this container. No special preparation is required, however, you may
wish to add baking soda or a Thetford chemical to reduce odors from food
particles in the system.
Waste Tank. The toilet drains into the waste or "black" holding tank. For
correct preparation follow the listed steps:
1. Release two quarts of water into the toilet bowl.
2. Place the recommended quantity of chemicals for waste holding
tank, as per instructions on the bottle, into the toilet bowl.
3. Flush liquids into the tank and allow up to two gallons of water
to flow into tank.
Each time you drain the tank, you should follow instructions listed, before
using.
All drain pipes will have a P-trap installed into each line. Water in these
traps prevent odors from escaping into the coach. During travel, water
from P-traps may spill and permit odors into the coach. These odors come
from fats and food particles decomposing in the tank. By adding water
and using a RV approved deodorizing agent, contents will dissolve faster,
keeping the drain lines and tanks clean and free flowing. These chemicals
are available at most RV supply stores.

Draining the Tanks

A final part of the sanitation system is the drainage of holding tanks.
Realizing dump stations will vary, place the coach as level as possible to
make drainage easier. Some tanks drain from the center, requiring unit
to be level or slightly higher up front. Others drain from the end, permitting
a slight tilting to the side which drains are on.
Remove the cap and attach the adapter onto the valve housing. Turn the
adapter 10 degrees to lock onto the pegs. Attach a flexible sewer hose to
the adapter and secure with a clamp. Place the other end into the
approved sewer system.
You may now open the 3" drain valve to drain the sewage tank first. Open
the valve on the grey water tank last to utilize contents to wash and rinse
the hose and drain lines.
Most states and parks have strict laws and regulations to prohibit
dumping of wastes of any kind into anything other than proper disposal
facilities or sewer systems. Almost all privately owned parks have either
a central pump facility or offer a campsite hookup for sewage. Some fuel
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