This is a combo of various devices which include flanged chamber, snap switches, dual station switch and also multi station – level switch. The chamber can work with operating pressure that is about 300 PSIG – series for boiler water. This is a chamber that is made out of cast iron of heavy duty. This device comes with level control of chamber type. Sealed – snap switch option is helpful for the type – level control for insertion. This switch is weatherproof in nature and without any mercury present in it. The switches with one – to two station levels is an effective one that is mounted vertically. Switches with level of multi station is another device with light weight and low cost. This is designed for series of business applications and can be installed externally and easily.