Company record
Mercury Displacement Industries, Inc. (MDI, Inc.) designs and manufactures a broad range of mercury‑based relays and contactors, solid‑state relays/contactors, and liquid‑level control devices. Its relay portfolio includes mercury‑to‑metal, mercury‑to‑mercury, sizing, time‑delay, and solid‑state models. The switch lineup features damper‑arm, tilt, tip‑over, motion‑and‑shock, proximity, vertical‑sump‑pump, twin‑float‑pump, pear‑shaped, and mercury‑sewage float switches. In addition, MDI supplies various float products such as mechanical, mini‑mechanical, mercury (Hg) floats, specialized, twin, pear‑shaped, and mercury sewage floats, together with power supplies, water/tank alarms, pressure transducers and sensors. The company also produces and distributes pumps for multiple applications, offering sump, sewage, grinder, non‑clogging, effluent, submersible effluent, shredder, utility, and sprinkler/jet types. These solutions serve original equipment manufacturers, plumbing supply distributors, contractors, and municipal sewage‑treatment facilities. All products are backed by a one‑year warranty.
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