Anfield^® Series SPAL/SPFL is a simple and common pressure switch utilizing a polyimide diaphragm for extended duty applications. The SPAL series is field adjustable while the SPFL series is factory set.  Both series of pressure switches are used in many automotive applications for monitoring of engine functions and auxiliary devices. These units are very economical and work well in extreme temperatures. Additional features include gold plated silver alloy contacts and high current ratings.
Common applications for the SPAL/SPFL series pressure switches are oil pressure, fuel pressure, exhaust pressure, and air brake pressure switches.