Push Fit Split Tee's - OK on heating?

[outmyway]

Has anyone used thsee JG's push fit split Tee's?

http://www.johnguest.com/news_article.asp?guid={33250953-CB6F-4A9B-AC01-1E81BC9BA6FA}

Are these OK for adding a new rad to my system?

 

[kevplumb]

JG Speedfit also offer a Slip Tee Connector which allows the user to tee off from rigid pipe. This is especially useful when adding another outlet such as a radiator or appliance.

 

[Nige F]

AH- Slip not split . I imagined something with jubilee clips and rubber seals

 

[outmyway]

Ahhh ... thanks ... I missed that

Only found two online stockists ... so new all the usual places dont have them (screwfix / plumbcentere / B+Q / Wickes etc).

 

[outmyway]

I imagined something with jubilee clips and rubber seals

Theirs an idea!

 

[kevindgas]

personally i wouldn't use speedfit or Hep2o fittings on any heating or hot water service.

after 5 years the speedfit become tarnished (brown) and brittle to the point of collapse.
and the grip rings in Hep2o fail if the pipe is not cut correctly/inserted perfectly straight.

use a decent plastic fitting or better still use copper

 

[outmyway]

Uhm, Thanks Kevingas .... do you think the later JG fittings are better?

Maybe I should get a blow torch out and do it properly with solder joints.

 

[holty]

there is a compression slip coupling.in certain situations iv used normal compression couplings, basically slide the comp fitting on the pipe one end with nut and olive attached. then the other end without nut and olive attached mark the pipe for cutting.so basically put nut and olive on the other pipe end then,end with nut and olive on the other pipe.slide the comp fitting till both olives on each pipe end are equal .then tighten.sounds a bit confusing,yet thats proberbly my description fault.

 

[Goldspoon]

after 5 years the speedfit become tarnished (brown) and brittle to the point of collapse.
and the grip rings in Hep2o fail if the pipe is not cut correctly/inserted perfectly straight.

Surely not. These businesses would be out of business by now and houses all over the country would be spewing water?

Have you any evidence/reports/pictures that can, when brought together, provide evidence of this please?

 

[outmyway]

I have to agree with goldspoon ... surley a major manufacturer like speedfit with all the kitemarks would not produce fittings that crumble after 5 years?