Nakakita Seisakusho NS689R-S-10. Manufacturer: Nakakita Seisakusho Co., Ltd. Valve Function: Double Pilot Check Valve with an integrated Relief Combination. Pressure Protection: The “Relief Combination” aspect indicates that the valve includes internal relief settings to protect the circuit from over-pressurization.

With their excellent wear resistance and robust construction, they ensure a smooth, efficient operation wherever they are used. Their polished surface not only enhances their durability but also makes them easy to handle.