SECTION 8-PLUMBING SYSTEMS JAYCO TOWABLE
Drain pipes With P-Trap (If So Equipped):
The drain pipes may be equipped with 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.
By adding 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.
Drain pipes With Dry Sealing Valve (If So Equipped):
Your RV may be equipped with a dry sealing valve that prevents the escape of odors from
your waste system and eliminates the need for P-traps.
Should the RV drain piping system become clogged and a mechanical cleanout tool is used
to open the drain pipe, it is important that the dry valve be removed before passing the
cleanout tool through the piping.
Passing a mechanical cleanout tool through the waterless valve may cause damage to the
internal seal that may potentially allow sewer gases to escape into the RV interior.
BLACK/GREY WATER HOLDING TANKS
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.
BLACK & GREY TANK DRAINS
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.
1. To make drainage easier, level the RV.
2. Remove the sewer hose housing dust cap, and
attach the sewer hose (customer supplied).
3. Place the end of the sewer hose into the approved
dump station.
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