SUN HYDRAULICS
COHAXFV

***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 COHAXFV (COHAXFV) is a spring-biased closed, pilot-to-close check cartridge valve with a nominal pilot ratio of 1.8:1. Designed to facilitate flow from port 1 to port 2 while blocking reverse flow, this valve is particularly effective in regeneration circuits. The pressure at the pilot port needs to effectively counteract the pressure at port 1 with its specific ratio, meaning that for every 1000 psi at the pilot port, it can close against a pressure of 1800 psi at port 1. Any reduction in pilot pressure may momentarily open the valve. This model features a maximum operating pressure capacity of 5000 psi and can handle up to 80 gpm of fluid capacity. It is built to ensure minimal leakage, with maximum valve leakage specified at approximately 1 drop per minute. The valve's robust construction includes Sun\u2019s floating style design which reduces the risk of internal parts binding due to installation torque or cavity/cartridge machining variations. The COHAXFV has been updated from earlier models; initially, COA models did not have a positive seal on the pilot pistons unlike the COB models, but now both models are mechanically identical and feature positive seals. The installation specifications include a hex size of 1-1/4 inches and an installation torque between 150-160 lbf ft. With its durable design and efficient operational capabilities, this cartridge valve is suitable for high-pressure applications where precise hydraulic flow control is required. It ensures reliability even in scenarios where equal pressures across all ports would typically keep the valve closed, enhancing system safety and performance.