What's it do??
http://www.gapswater.co.uk/acatalog/Clack-vessel-assembly-to-suit-2-1-2--top-vessel--1--BSP-ports-with-refill-port-5644.html#SID=489
Not for us.
http://ewaterfilters.co.uk/acatalog/Distribution_systems_for_2_1_2__vessels_.htmlThe 1190FP 1" In-Out Heads are designed for
downflow filter applications (
that's us) or upflow pH neutralization (
haven't a clue what that is.) Molded out of a rugged thermoplastic resin, the 1191 Head features a ¼" FPT air vent port which can be drilled out to accept an air relief valve. The 1" Head is fully ported to provide maximum flow rates. The 1191 incorporates a standard 2½” tank connection and features parallel inlet and outlet ports to easily adapt to standard plumbing connections or Clack’s all-plastic, fourway bypass valve.
The 1190FP
Head has a removable fill port cap to allow easy access to the media bed. (
That could help us but not at that price.) The 1190FP includes a removable upper distributor basket providing access to the top of the riser pipe, allowing water to be drained from the tank when replacing media (
do this anyway by removing Hozelok connectors and lying vessel on its side.). The 1190FP includes a utility wrench to be used with the removable cap. A full line of top and bottom distributors is available.
A bypass is available for a further £21.00 + VAT. That could help when dealing with tds creep.
The provision for a 1/4" air relief valve is interesting. However, as I virtually fully fill my di vessel with water before fitting the head and riser tube, I can't see I really need this. I haven't in the last 5 years anyway.
.