Ashcroft Inc.: Differential Pressure Switch
The DDS-Series differential pressure switch is designed to sense low differential pressures between high-pressure sources. It can control differential pressures from 0/6 to 0/150 inches of water on pressure lines up to 1,500 psi. UL-listed NEMA 4 watertight and NEMA 7 explosionproof versions are available with a choice of electrical switches, wetted materials, and set point options. Encased in a cast-aluminum housing, DDS pressure switches employ a near-frictionless switching mechanism for superior repeatability, said the company.