John7
New Member
I just bought a new electric hot water tank. It came with pre-installed dielectric (DE) steel nipple on the hot outlet. This unit has the cold inlet at the bottom and uses a brass combination tee and drain valve. There is no dielectric provision here. Also the brass temperature relief valve is screwed directly to the steel tank.
Q1. Don’t these also need dielectrics? I am replacing the combination tee and drain valve with a proper steel dielectric nipple, brass tee, ball valve etc.
Q2 I am reinstalling the relief valve on a steel dielectric nipple. Should this and the cold inlet have an actual dielectric union? (FWIW elsewhere, the boiler manufacturer said they would void the warrantee without proper DE unions. The ones with a plastic separator and BRASS, not steel, on the copper side.)
Q3. In general do normal installations of copper/brass directly to these steel DE nipples not corrode? (It seems the DE nipples only protect the tank, not the copper/brass to steel interface).
Thanks
John
Q1. Don’t these also need dielectrics? I am replacing the combination tee and drain valve with a proper steel dielectric nipple, brass tee, ball valve etc.
Q2 I am reinstalling the relief valve on a steel dielectric nipple. Should this and the cold inlet have an actual dielectric union? (FWIW elsewhere, the boiler manufacturer said they would void the warrantee without proper DE unions. The ones with a plastic separator and BRASS, not steel, on the copper side.)
Q3. In general do normal installations of copper/brass directly to these steel DE nipples not corrode? (It seems the DE nipples only protect the tank, not the copper/brass to steel interface).
Thanks
John