The Ashcroft Dresser 15PSI Range 500PSI Proof 15A 0.5A Pressure Switch LPDN4GGV25 is a high-quality pressure switch designed for industrial applications. With a maximum proof pressure of 500 psi and a 15 psi spring setting, this switch is suitable for a wide range of pressure control situations. The Ashcroft brand is known for its reliability and durability, making this pressure switch a trusted choice for businesses and industrial operations.