Hydraulic By Pass Block with Check Valve shippingLabel Hopper is translucent allowing the 28427125 2 Hopper is translucent allowing the operator to easily check on the remaining volume and the cover is a reflective silver lid with latch straps Includes a two outlet bolt on stainless steel bottom and slide with straight spouts and a precision cam gauge to regulate the openings in the bottom to apply the recommended rate for your individual operation Hydraulic By Pass Block with Check Valve protects the hydraulic blower motor on the Orbit Air applicators by allowing the hydraulic motor to free spin as it slows down and stops