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sump pump weight type switches. Where did they all go?
What happened to the type of sump pump switch that used two weights on a cord?
This is just something I've been wondering and I'm thinking with the amount of seasoned plumbers on this site someone will have an answer . In the house I grew up in we had some serious water problems that required three sump pumps to keep up with at times. We had quality pumps all of which had a switch that had two weights. When the water got half way up the top weight the spring loaded switch clicked on, when it got half way down the bottom weight it clicked off.
All 3 pumps never had switch problems. The oldest was a 1958 Homart 1/2 HP submersible and was still in use at least until 2006. The switches clamped onto the pipe via a simple hose clamp if I remember correctly.
Weil-McLain EG-40 connected to 392sqft of radiation via two 2" risers into a 3" drop header and 2" equalizer. ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
Typical operating pressure 0.5 - 1.0 inch wc.
Steam system pictures updated 1/25/15.https://picasaweb.google.com/thetube0a3/Boiler?authkey=Gv1sRgCImUxIqv9436MQ#Don't push the envelope, eliminate it.