Airstream INTERNATIONAL TRAILER, Owner'S Manual, Page: 81 / 138

AIRSTREAM INTERNATIONAL TRAILER OWNERS MANUAL
F-17
DRAIN VALVES
The hot and cold water line low point drain valves are located on exterior of the coach for easier access. If
you look under the trailer in front of your tires on the roadside you can see a galvanized "box" that is a few
inches lower than the trailer frame. This "box" or pan supports the water tank. The line drain valves will be
the two brass petcocks extending from the end of the pan. Open these low point drain valves to drain the
water out of the hot and cold water lines.
To Empty Fresh Water Tank
The large valve next to the low point drain petcocks under the trailer drains the water fresh tank.
Pumping the water out with the self-contained water pump also empties the fresh water tank. Simply turn
on the pump switch and open a couple of faucets until the water will no longer comes out.
An additional 1 ¼” drain plug is located on the bottom of the tank inside the galvanized “box”. The plug is
accessible by removing an inspection plate close to the petcock that can be seen on the bottom of the tank
support pan. There may be a little Styrofoam insulation covering the plug that should be carefully removed.
Note : For winterizing purposes, only the large tank drain valve needs to be opened to drain the fresh water
tank.
Water Heater Draining
All models have a drain plug or petcock on the water heater. Access is from the exterior. The plug or valve
is usually located in the lower left corner, viewed as you face the exterior of the water heater.
SHUT OFF VALVES
Your Airstream has one other water valve besides the water heater by-pass system. It is located next to the
toilet and used to shut water off to the toilet in an emergency or service situation. The water heater by-pass
valves are discussed in the next section on winterizing.