Introduction: Bike Pump / Air Mattress Valve Adapter

Picture of Bike Pump / Air Mattress Valve Adapter

I purchased this Coleman brand, Quickbed air mattress in 2016. I didn't want to purchase a proprietary pump which was useless for anything but an air mattress, and I already had a perfectly good bike pump.

There ARE some pre-made adapters out there, but I couldn't find one in a store, and didn't have time to wait for one from e-Bay.

(Also, I'm cheap and like a good DIY project)

Step 1: Measure Inside-diameter of Mattress Valve

Picture of Measure Inside-diameter of Mattress Valve

Ideally, use calipers to measure the inside of your mattress valve.

I did not have calipers, so I checked by coin size: a Canadian dime was too small, a nickel (pictured) fit fairly snugly inside the soft rubber orifice.

Step 2: If You Live in the USA, Consider Purchasing an Adapter

Picture of If You Live in the USA, Consider Purchasing an Adapter

My online research suggested that many air mattresses, inflatable boats and toys use a "Boston" valve and sometimes have pre-made adapters available. The one pictured goes under the brand names of "Airhead" "Airheads" or "Kwik Tek".

In the USA, you may be able to purchase a ready made adapter. I couldn't find any in Canada, so I can't be sure if one like the one pictured would work.

Step 3: Gather Parts: Old Bike Tube, PVC Plumbing Parts

Picture of Gather Parts: Old Bike Tube, PVC Plumbing Parts

I used the following:

  • Schedule 40 (SCH40) PVC Union / Coupling. This is a 3-part compression cuff joint, into which the bike-tire valve is inserted.
    • ...The union is 3 parts - the 3 white pieces pictured above.
    • ...The one pictured is 1/2 in [half inch] female thread x female thread with Buna o-ring union; made by XIRTEC or IPEX. http://www.rona.ca/en/pvc-union Available at RONA or Home Depot.)
  • Rubber o-ring (this may be optional; mine was about 3/4 in diameter)
  • Bike tire valve with excess rubber around the valve, approx 1.5 in diameter
    • I cut a larger rubber piece, placed it inside the PVC joint, and traced the PVC to get the right diamter
  • 3 inch or 4 inch long, PVC pipe
    • Check the outer diameter of the pipe with your coin or calipers. The one pictured was 1/2 inch diameter
    • Checked that it fit into the union at the hardware store
    • Check that it fits into your air-mattress valve - mine "threads" into the un-threaded soft robber valve easily
  • Pink Teflon tape (rated for gas-line use)
    • White Teflon tape, or some other sealant may work.)

Step 4: Put O-ring on Upper Part of PVC Union / Coupling

Picture of Put O-ring on Upper Part of PVC Union / Coupling

This will help minimize risk of leakage and cracking from over-tightening the union.

Nuff said

Step 5: Assemble Parts

Picture of Assemble Parts

Assemble and test it out!

Comments

DIY Hacks and How Tos (author)2016-07-17

Nice DIY adapter. This would work a lot better than my usual method of wrapping it in duct tape until it works.

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