Units are available with four differential-pressure settings and screw into a 3/4-16 boss in a filter head. The single-wire design is suited for 6,000-psi systems and has passed a 1,000,000-cycle test. Aluminum body and Viton seals are standard and come with attached wire and connector

Differential Pressure,
16 Carriage Hill Dr., Branford, CT 06405,
(203) 481-2545,