The Rexroth Z2S6A1-66/ (R900347498) is a high-performance, pilot-operated check valve designed in a sandwich plate configuration. This size 6 (NG6) valve is engineered for the leak-free blocking of one actuator port, making it ideal for applications requiring reliable load-holding, even during extended periods of standstill. It allows free flow from channel A1 to A2 while blocking flow in the opposite direction. The blocked passage can be opened by applying sufficient pilot pressure to the X port. Its robust construction ensures durability and precise performance in a wide range of industrial hydraulic systems, conforming to the ISO 4401 porting pattern for easy integration.