Metric waste fittings

[Will Burton]

Desperately seeking 90 degree elbow and straight coupler plastic waste fittings with 40 mm OD. Any vendor recommendations greatly appreciated.

Will Burton
s/v Far Niente

[Boracay]

40 mm is an odd size. Can't you use 38mm?

[Steve Kidson]

In Australia, domestic waste water pipe (sinks, basins etc) is 40mm. If not being used for pressure, maybe domestic PVC plumbing fittings from a hardware or Plumbers' Supplies might work.

Cheers

Steve

[Will Burton]

Chris,

1.5" fittings (38.1 mm) don't work. The waste hose is quite stiff and can't be clamped down to seal 2 mm difference smaller.

[boatbuilder]

Hot air gun usually does the trick. Clamp it when its soft

[Will Burton]

FYI- a professional rigger came up with a solution that is quite easy and looks very good. He had some very large diameter (>1.5" dia.) heat shrink tubing, the kind used to seal electrical connections. You just slip it over the 1.5" OD fitting and when heated, pulls down very tight over the fitting. The final diameter was such that it had to be worked into the 40mm ID waste tubing. It turns out that there are two wall thicknesses of the shrink tubing. Be sure to get the thinner version. The thicker stuff gives greater than 2 mm increase in OD. This stuff is very tough, water resistant but soft enough to clamp down.