Hydro Instruments is also offers another model of Isolation Valve Assembly ( a.k.a. Auxiliary Valve ). Contact us for more ... [ read more ]

Hydro Instruments is pleased to announce the introduction of our Series 6000 Direct Pressure Feed Systems.

These systems are used for applications without electricity and without a vacuum source. The chlorine gas (or ammonia gas) is injected using the pressure inside the chlorine (or ... [ read more ]

Hydro Instruments now offers our first remote meter (for Chlorine gas or Sulfur Dioxide gas) with a 4-20mA output.

Consider the following points:

1.) The 4-20mA output is a direct readout of the float position. There is a magnet inside the PTFE float. There are 20 Hall ... [ read more ]

Hydro Instruments started offering more systems for feeding Carbon Dioxide (for pH control). We have now added some specific literature to our website.

The CO2 is used to reduce pH. It forms carbonic acid in the water. Surface water treatment plants might use CO2 feed systems.
[ read more ]