SUN HYDRAULICS
DNCATBV636

***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 DNCATBV636 (DNCATBV636) is a solenoid-operated, 4-way, 2-position cartridge valve designed for direct-acting and balanced spool directional control. It features a closed transition between positions, minimizing oil loss during shifting, which is particularly beneficial in pilot control circuits. This valve operates with port 3 as the inlet and port 1 as the tank, though reverse flow is possible but not recommended due to inconsistent performance. The solenoid tube assembly is rated for fatigue at pressures up to 5000 psi (350 bar), allowing for robust and reliable operation without requiring minimum hydraulic pressure. The valve's construction includes EPDM seals suitable for systems using phosphate ester fluids, with a warning against exposure to petroleum-based substances that could damage the seals. The DNCATBV636 utilizes a wet armature design where the working fluid surrounds the armature, potentially impacting performance if exposed to high temperatures from prolonged coil energization. This is crucial when using certain fluids like water-glycol mixtures that may degrade and form varnishes over time. The solenoid's magnetic design ensures high efficiency with substantial spool actuating force per watt, supporting consistent valve shifting. Coils are interchangeable within Sun Series 1 solenoid products and can be mounted in either direction on the tube, with various termination and voltage options available. The valve's capacity is rated at 8 gpm (30 L/min), with maximum operating pressure reaching 5000 psi (350 bar). It offers a typical response time of 50 ms and accommodates switching frequencies up to 15,000 cycles per hour. Manual override features include a force requirement of 5 lbs/1000 psi at Port 1 and an override stroke of .10 inches (2.5 mm). The DNCATBV636 incorporates Sun\u2019s floating style construction to reduce internal binding risks from installation torque or machining variations, making it a versatile choice for demanding hydraulic applications.