Duotight 8mm 1/4" NPT Adapter

  • Item #Z87
  • Price: $2.49
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In stock, will ship on Monday, June 5

If you are looking to an alternative to cutting tubing and pressing it over hose barbs with hose clamps, with the resultant difficulty in dissassembly, you might find the DuoTight System interesting. Based on double O ring sealed push in fittings, DuoTight allows easy repeated hose attachment and removal, as well as EVABarrier lined odorless tubing that costs no more than economy PCV tubing.

DuoTight features a patented dual O ring sealing system using high quality EPDM o-rings. The double o-ring means DuoTight have twice the sealing surface surface when compared with other push in fittings. This makes DuoTight even more reliable and reduces the chance of a leak. The double o-ring system also means that you can bend the hose with much tighter radius without causing leaking issues.

Clamps are not needed. To use the DuoTight System, simply cut your EVABarrier tubing to length (cut tubing square for best results, not at an angle), and push into the DuoTight fitting. To remove the tubing, simply press back on the sealing flange and pull the hose out. EVABarrier Hose and DuoTight fittings are rated up to 100 PSI.

This fitting adapts 8mm EVAbarrier tubing to a  ¼" female BSP and also fits NPT thread fittings. 

The fitting seals tight without teflon tape when using plastic ball and pin locks, but you will need to wrap stainless male flare threads is a bit of teflon tape to get them to seal before threading these on.

Compatible with: - EVABarrier 4mm ID x 8mm OD line (item Z91)
                          - EVABarrier 5mm ID x 8mm OD line (item Z92) 

Average rating 10 out of 10 ( based on 1 review )

Easy way to connect to pressure gauge

Review by Stephen on 6/16/2021

I use two of these to connect to my dual hose pressure gauge. Easy to install but you do have to be weary not to strip the threads when putting into stainless steel. Hand tightening is enough since it has the o ring to seal it. I stripped mine a bit but it still works!

Sep 22, 2019 by Marc

Q: the male thread of this can be connected to a stainless female thread without tape, correct? I want to replace the brass piece that connects to the regulator on whats pictured here: https://www.kegconnection.com/air-distributor-5-way-with-check-valves

A: We have not tried this, but it should work without tape. Depending on the machining of the block on the distributor, thread sealant may be needed.

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