The Cashco Model DA1 is a high-performance, spring-operated, flow-to-open, pressure-reducing regulator with internal pressure balancing piston-cylinder that provides high flow capacity and high-pressure drop capability. It can be utilized in different applications, but its proven specialty appeared in clean gaseous or liquid services. It can handle an inlet pressure of up to 1480 psi and an outlet pressure of 450 psi in multiple spring ranges.