The Wilkins 375DA is a reduced pressure detector assembly (RPDA). It is available in 2 1/2″-10″ sizes and has been in production since 1998. The body is made of epoxy coated ductile iron. The 375DA utilizes a 3/4″ 975XLD for the bypass assembly. Parts between the 375DA, 375ADA, and 375ASTDA are not interchangeable.