The Sun LPDAXHN is a high-performance pilot-to-close, spring-biased closed, unbalanced poppet logic element. This cartridge valve is designed to block flow from port 1 to port 2. When pilot pressure is applied at port 3, it works with the spring to close the poppet, preventing flow from port 1 to port 2. Without pilot pressure, the valve is opened by pressure at port 1, allowing flow to port 2. Its robust construction ensures reliability in demanding hydraulic systems, making it suitable for a variety of industrial and mobile applications requiring precise flow control.