United Electric 24 Series Delta Pro Pressure Switches offers three different connection types with brass, polysulfone®, or PFA Teflon.  The Series features stainless steel multi-turn adjusting screw, adjustment knob with or without reference scale and it is UL listed/cUL certified.  They are capable of filter monitoring and proof-of-flow.  High purity versions may also be used to monitor and control deionized water systems, wet benches, cleaning equipment, corrosive gas lines, and bulk chemical handling systems.

The United Electric 24-013-M201 Delta Pro Pressure Switch model has a 1/4-inch NPT connection with Polyurethane (polyether) diaphragm and Factory Set One Switch which specify increasing or decreasing pressure and set point.