R20, R10, R13, R18 Overload Protector

R series (R20, R10, R13, R18…) hydraulic overload relief valve improves safety in the press area by eliminating otherwise undetectable fatigue due to overloading of the press. Quick response to overloading of the press is ensured by the low inertia balanced piston valve design to relieve oil in the overload cylinders, thereby, preventing damage to the die, the press structure and press drive mechanism in an overload condition.