ATOS – HR-012 50 – MODULAR CHECK VALVE

The Atos HR-012 50 modular check valve (Atos HR-012/50) is a high-performance modular pilot-operated check valve engineered for load holding, directional control, and zero-leakage hydraulic circuit protection in heavy industrial and marine equipment. Designed by Atos Spa, this CETOP 3 (ISO 4401 size 06) sandwich plate valve installs directly beneath directional control valves to maintain actuator position under load and prevent backflow. Key technical specifications include a maximum operating pressure up to 315 bar (4500 PSI), nominal flow capacity up to 60 L/min, low cracking pressure options, and high-strength cast iron construction with precision-ground internal poppets. Utilizing the Atos HR 012 50 hydraulic check valve ensures rapid pilot response, superior volumetric efficiency, zero-leakage sealing, and long-term continuous-duty operational reliability in demanding hydraulic power units.