A chlorinator device which does not have a built-in rate valve. A plugged chlorinator is connected to and controlled by a remote meter with a rate valve. In this way, the chlorine feed rate is controlled at the point of the remote meter, rather than at the point of the chlorinator.

Polyvinyl Chloride is the material used to manufacture the Hydro Instruments sulfonator and ejector parts, chosen because of its' corrosion and weather resistance and high compressive, flexural, and tensile strengths.

Acronym for pounds-per-day, a measurement of the amount of gas that chlorinators used in the United States are capable of passing in a day.

An acronym for pounds-per-square-inch, a self descriptive measurement of water and air pressures.