SUN HYDRAULICS
COJCXCN

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics COJCXCN (COJCXCN) is a high-performance hydraulic valve designed for precise flow control in fluid power applications. This spring-biased closed, pilot-to-close check cartridge valve features a nominal pilot ratio of 1.8:1, allowing it to efficiently manage flow from port 1 to port 2 while completely blocking reverse flow under any condition. The valve operates by opposing pressure at the external pilot port and port 1 at a ratio of 1.8:1, ensuring reliable closure even under varying pressure conditions. Constructed with Sun's floating style construction, the COJCXCN minimizes potential internal part binding caused by excessive installation torque or variations in cavity/cartridge machining, promoting longevity and consistent performance. It is designed for a T19A cavity and falls within the Series 4 category. The valve can handle a maximum operating pressure of 5000 psi (350 bar) and has a capacity of up to 160 gpm (610 L/min). Additionally, it exhibits minimal leakage, with maximum valve leakage specified at less than one drop per minute at 110 SUS (24 cSt). Key specifications also include a valve hex size of 1-5/8 in (41.3 mm) and an installation torque range of 350 - 375 lbf ft (474 - 508 Nm). The model weight is recorded at approximately 2.60 lbs (1.20 kg). For maintenance and repair, Viton seal kits are available under part number: 990019006. This valve configuration ensures that it remains closed with equal pressures at all ports, making it an essential component for systems requiring dependable non-return functionality.