There should be a schrader valve on the accumulated (expansion tank) somewhere and the pressure can be measured in the same way as you would on a car tyre. Usually the pressure should be set 3-4 psi below the pump cut in pressure.
Water been released from the schrader valve would indicate a split in the diaphragm.
She must of got under Ludham bridge,as I got stuck behind her from How Hill to Barton Broad yesterday. Some tight squeezes on bends when boats coming the other way.
Hi Simondo,
if your stainless steel mud weight is still for sale I will buy it, we are down on the Broads from next Thursday ( 15th ) until the following Tuesday so would be able to collect from Brundall.
Graham.