Fernox TF1 Valves

[Whitworth]

Just taken delivery of a Fernox TF1 filter. The cyclone part etc seem to be the part however the isolating valves are reduced bore not full flow. Seems a shame after planning a system to flow as efficiently as possible only to have a bottleneck at the filter!
Firstly could someone confirm the valve end sizes (22mm x 1" bsp?)
I had a quick look online for replacements in full flow with no success. Anyone know where I might get a couple (would prefer ball valves if possible)
Thanks
Martin

 

[transam]

Doubt if it will make much difference if any ??

some types of pump valves are not full bore !

 

[transam]

Doubt if it will make much difference if any ?? as I understand it Fernox make an 28mm version anyway .

some types of pump valves are not full bore !

 

[Whitworth]

Hi Transam,
the valves reduce down to about 14mm dia. That would be like having a piece of 15mm with reducers soldered into a 22mm header(twice) The filter itself will create resistance so I would like to reduce the overall as much as possible.
Yes I am probably being pedantic but for the cost of a couple of valves I would like to change it.
Thanks

 

[transam]

In which case than the nut that fits to the filter body is 1"

 

[Whitworth]

Thanks, I have been looking at 1"fem x 22mm adaptors with the idea of using separate 22mm valves, but all the adaptors seem to be solid (they don't have the loose backnut like the fernox valve) Is there a specific name for the type of fitting with the loose backnut so I can do a search?
I would prefer this design rather than the solid fitting as it means if I need to remove the filter I don't have to stretch the pipes out of the 22mm side.