Description
The 399C Abbits is a 6-inch Differential Pressure Indicating Switch used to energize alarm and control circuits at predetermined limits of flow through pipelines, liquid levels within pressurized vessels, or pressure losses across devices such as filters. For flow monitoring applications, the 399C Abbits is used in conjunction with a primary differential pressure element such as an orifice or venturi.

Weatherproof Abbits® Model 399C Differential Pressure Indicating Switches are designed for industrial service. The 399C features a NEMA-4 watertight die-cast aluminum case finished with a weather-resistant black epoxy resin coating. A durable Lexan lens is secured in the bezel with an elastomer sealing ring that minimizes accidental breakage and provides a moisture-, fume-, and dust-free environment for the jeweled indicator movement and switch mechanism.