EL1150, 3/4" NPT Probe for 1150 Series controls (1-15/16" ID)

On a job with 2 older systems, both with an 1150 with sensors leaking, starting to corrode the control boards. Able to clean up the boards and replacement sensors operate fine. Minor hiccup is originals just used screws where these new one have hex studs. But the slots in the plastic case of controller are too small for them. Had to modify mounting holes a bit to accommodate them. I do prefer the new design but this may add to install time for older units.

On a job with 2 older systems, both with an 1150 with sensors leaking, starting to corrode the control boards. Able to clean up the boards and replacement sensors operate fine. Minor hiccup is originals just used screws where these new one have hex studs. But the slots in the plastic case of controller are too small for them. Had to modify mounting holes a bit to accommodate them. I do prefer the new design but this may add to install time for older units.

I ordered on Sunday afternoon the package was on my steps Monday afternoon!!!!

Fits perfectly, exactly as the original sensor did. Shipped quickly.

It's great to find a place that will sell you the probe and not the entire switch. Saved some money as only the probe was leaking.

I was able to replace the leaking low water probe only and not the whole sensor that shuts off the boiler. So the part saved me $50. Other suppliers did not offer the probe only!

I received the exact replacement part and it was delivered exactly as promised. Since I'm not usually in the "hydronic business" and don't order regularly, my sole suggestion is that it would have been helpful if the website had had a photo of this particular part to compare mine with. (Given the number of parts available I understand that maintaining photos for all of them could be a large and expensive undertaking.)