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Can I just siphon a waterbed mattress out a window, into a tub, or a basement floor drain? The answer is yes, however you must be extra careful if you have a baffled mattress. The reason is that the materials on the inside of the waterbed mattress may not drain completely or eveb worse if handled incorrectly could shift out of position ruining your mattress.
There are a couple methods to starting a gravity fed siphon for both the hardside or softside waterbed. First you will need one or all of the proper attachments to connect your garden hose to the waterbed mattress:
A drain and fill kit includes
1 Venturi pump
1 mattress adapter
1 faucet adapter
The kit will also include hose washers for all the female fittings.
All 3 methods require your to make sure that the waterbed heater has been unplugged and that the mattress has been burped and bled of any air bubbles before starting any draining process.
Choose the Method below you would like to start the siphoning process with.
Gravity siphon started with drain and fill kit.
Follow the drain and fill kit Instructions and turn the faucet all the way up. Let the water run until you hear a change in pitch of the exhausting water from the Venturi pump. While running disconnect the female end of the garden hose attachment from the side of the Venturi pump. Drop the hose to the ground immediately. If the end of the hose is lower than the bed the siphon will now start. You will obviously need to make sure that the draining water is going into a tub, basement floor drain, or out a window or you will have a mess on your hands.
Gravity siphon started with only a mattress adapter.
Connect the female end of the garden hose to a faucet and the mattress attachment from the drain and fill kit to the male end of the hose. Over the sink carefully flush all air from the hose and then shut off the water. With a towel in hand, walk to the bed and connect the mattress adapter to the mattress then push valve in. Go turn on your water and count to 10. Then shut off the water disconnect and kink the hose. It is best to carefully drop the end of the hose out of a window. The lower the end of the hose the greater the tronger the siphon be due to gravity the drop.
Gravity siphon started with an electric pump.
Follow Electric Waterbed Pump directions. Once the pump has been primed and water is flowing, shut off the pump and again carefully disconnect the garden hose and drop out of a window to a lower point than the waterbed.
Many people choose the siphoning method to save on water consumption, electricity, or they just aren’t aware that there is better ways to drain a waterbed. If you have a wave control mattress, siphoning a waterbed mattress can be very tricky. In order to achieve the necessary vacuum required for moving a baffled mattress so you do not ruin It or Damage it by bunching or shifting the baffling system you must achieve a vacuum. You will need a very large drop around 8 to 10 feet or you will need to finish the vacuum process with a wet dry shop vac or Venturi pump and replace the cap and plug insert immediately to maintain the vacuum on the mattress. It should look like a package of beef jerky in the shrink wrap when finished.
Contact a waterbed store for more detailed information.