Vinidex and Hardy Pope both list them, just the retailers that don't stock them.

Plastic Plumbing & Irrigation Supplies also have them in there catalogue
http://www.plasticplumbing.com.au/main.htm

"hoges" wrote:

I need a 4-way fitting for 25mm poly pipe but the local retic specialists
say that none are made. I can get T-s but I'd need two in a cumbersome
arrangement to do what I want, so a 4-way is worth pursuing. Does anyone
know of any links to manufacturers of Poly fittings? I've googled it but
turned up only one manufacturer and lots of academic papers on water use so
far.
TIA
hoges