Tubing and Push-Fit Compatibility

[Muaddib1116]

So I'm relatively familiar with pex and sharkbite fittings from home diy work. The plumbing on my boat looks really similar, I believe it is Whale tubing and fittings. Defender carries Whale tubing/fittings, but also has Aqualock tubing/fittings. Are these all proprietary? or are they pretty much interchangeably compatible?

[chris mac]

I know whale fittings and pipe do come in metric. I beleive 15mm. Check on the end of the fitting ring, its stamped there.
Maybe they carry an imperial system too??? I'm not sure.

[s/v Jedi]

Originally Posted by Muaddib1116

So I'm relatively familiar with pex and sharkbite fittings from home diy work. The plumbing on my boat looks really similar, I believe it is Whale tubing and fittings. Defender carries Whale tubing/fittings, but also has Aqualock tubing/fittings. Are these all proprietary? or are they pretty much interchangeably compatible?

I believe what you have is 15mm PEX. The big brand names are Whale and SeaTech (Watts).

Best place to source these, start here: https://www.freshwatersystems.com/co...5D=15mm%2520OD

[goboatingnow]

Whale is 15mm only but threaded fittings are to BSP ie ½ etc

[goboatingnow]

Domestic flexible PEX plumbing to various standards is certainly available this side of the pond.

[vpbarkley]

I discovered that Whale fittings on my boat's fresh water system would not leak water under internal pressure but would leak air under the slightest vacuum.

This allowed copious volumes of air to enter into the system at the fittings from the tank to the pressure water pump. This made all the faucets spit constantly.

By replacing all the Whale fittings with hose barbs and clamps, between the water tanks and the pressure water pump, the problem was solved completely.

I might add that the Whale fittings are not inexpensive.

[geoff3nebel]

I have found that any push-fit 15mm fittings and 15mm plastic pipe will do. I replaced the flexible hoses and jubilee clips in my boat - two heads and galley - eight years ago everything’s still working