water leak near city water hook up

The leaking problem and O-rings are in the valve body next to the tee. These are not typical O-rings. When I dismantled mine to look at possibility of rebuild kit nothing stood out as a problem. I replaced my entire assembly. According to the Kant leak site they state you should never switch that diverter valve with pressure in the system-- of course they don't want to accept responsibility. I now have a water shut off right at the water inlet and open the two low water drains for a second to relieve pressure in the system before changing the diverter valve. I mentioned I purchased one assembly to solve my problem and carry one new spare as Lazy Days in Florida was out of stock. These are commonly used on motor homes as well. Two yrs. ago the cost was $163.00. In my case I needed right away as I was leaving for home in Canada. CAUTION be careful not to drop seal off those PEX fittings. On one incredibly difficult lines to reconnect without dropping the seal I cut the line and rejoined with a Shark Bite joiner. I don't believe there is a cheap fix or healing procedure for your problem.