degrub

50 cm is plenty of room to route 50mm or less diameter piping to where the salt tanks might be and then back again to tie into the house entry. You give up a small amount of pressure drop for the ells is all.

Denso

Rain

Slam

Crystals

Drift

Challenger

Bali

Wight

(at the ) wheel ( US band)

For the overflow return, knowing the inlet flow, the height between the overflow nozzle and the top hat relief ( max driving force for return without overflow out top hat) , pressure drop from pump discharge to fill inlet, & pump head curve, one could predict the line size required to prevent overflow out the top hat. To minimize the increase, just run the overflow return from the chosen height to ground level and use a trench back to the pond. My guess would be a 4 or 6 inch might do it.

At least everyone would know when the battery died ….

Donovan

Ginger

Done

Smoke

Chic

Rose

Traveler

Money

Garlic

Pennsylvania

A

Bernard

Where is the switch to turn the pump on/off ? you could replace or supplement the switch with a timer set to the minimum fill time from empty or less. i would not put in a block valve on the line to the tank in any case without a relief path for deadhead that allows flow through the pump. This system does not appear to be designed to be blocked in and appears “safe” as designed. Steam/water explosions are nasty and will throw pump casing bits quite a ways . from the description, it appears there is already an overflow on the tank . Since it has happened before, i assume there was no harm to the tank. if you only have a couple days to deal with this, it sound s like calling bil daily is the plan. The worst case seems to be overflowing the tank for a while.