Alkathene Fitting Q

[Rick]

I have a 32mm Alkatene pipe that terminates on a one way valve on a pressure vessel.

To make the connection these is a metal Alkathene fitting .. consisting of a nut, compression Olive, space and an O ring.

The nut then screws onto the pressure vessel fitting, pulling olive tight onto pipe and spacer presses O ring into groove in the fixed half of fitting, and the O ring making the seal.

Picture here of the pipe end fittings.

O ring is damaged .... anybody know where I can get spare O rings ... size is 3.5mm x 32mm

I estimate 3.5mm as it is different at every point I put callipers on.

The designation on the fitting is :

DVGW G.PN4 WPN10

(The GVGW tells me is is German water systemns standard)

Tried local plumbing & commercial plumb centres ... all their alkathene fittings are plastic not metal ... no option to change to plastic as it has to work with existing pressure vessel.

[Andrew Mawson]

Any decent car parts or plumbers supply place will have a selection box of 'o' rings that you can pick and mix. If you are local to East Sussex you are welcome to look though my metric and Imperial sets.

AWEM

[Rick]

Tried the local plumbing trade places - no luck Even been searching eBay etc. can find 32 x 3 but not size I need

[fred]

In article , Rick writes

A quick search shows a close match in:

BS1806 3.53mm Section. size BS218, 31.43mm ID, 3.53mm section

Stretching it by 0.5mm doesn't sound too bad.

First supplier hit:

prob worth searching with that BS size code, note that quite a few search matches came up but had the wrong section, 3mm instead of 3.53.

[fred]

In article , fred writes

Here ya go:

pk, 1.85 + 0.90 post

[Rick]

>>

Top banana .... thanks