Dielectric Union Leaking

Screw on the galvanized half of the dielectric union and tighten it using a wrench.

Dielectric union leaking.

If so it has a rubber washer inside and may be leaking because the washer is cracked or worn. In addition all flanged unions used on larger pipe sizes are gasketed. The psu plant engineering services department recommends replacement of a dielectric union with a dielectric nipple shown below. Leak at dielectric union.

I have never seen a gasketed union. Every single union fails miserably by either leaking clogging up completely rusting to pieces with no water contact outside pipe or depositing rust in water. Unions rather than 3 4 copper female so as it would be easier to take out if. Things earlier today were going just peachy put in a full port ball valve sweated the joints and tightened down the nut on the dielectric unions.

I decided on the d. I am a licensed plumber for 20 plus years. One example of a gasketed union is a thread by thread dielectric union used on gas systems. 3 slide the union nut onto the 3 4 inch copper pipe that you are going to connect to the heater with its threads.

Hello tomorrow will be day 2 in my venture to change out a water heater. You have lived a very sheltered life my friend. Their experience is that simply tightening th union fitting is not a durable repair. When i started it was code to install dielectric unions everywhere in houses where copper connects to steel.