SUN HYDRAULICS
DNCALXN636

***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 DNCALXN636 (DNCALXN636) is a solenoid-operated, 4-way, 2-position cartridge valve designed as a direct-acting, balanced spool directional valve. It features a closed transition between positions, which effectively reduces oil loss during shifting\u2014a crucial attribute for pilot control circuits. The valve's capacity is optimized when port 3 is used as the inlet and port 1 as the tank; while reverse flow is possible, it is not recommended due to performance considerations. The solenoid tube assembly of this valve is fatigue-rated for service up to 5000 psi (350 bar), ensuring durability under high-pressure conditions. This direct-actuated valve does not require any minimum hydraulic pressure for operation and uses EPDM seals suitable for systems with phosphate ester fluids, although these seals are incompatible with petroleum-based fluids. The valve employs a wet armature design, allowing the working fluid to surround the armature and absorb heat from the coil\u2014an important factor when the coil remains energized over extended periods. A diverse range of coil termination and voltage options are available, some with surge protection features. The solenoid's magnetic design enhances efficiency by providing high spool actuating force per watt expended, resulting in reliable shifting performance. Coils are interchangeable within Sun Series 1 solenoid products and can be mounted in either direction on the tube. The DNCALXN636 incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. It fits into cavity T-31A and belongs to Series 1 with an 8 gpm (30 L/min) capacity. Additional specifications include a response time of approximately 50 ms, maximum leakage at specified conditions of 10 in\u00b3/min (160 cc/min), switching frequency up to 15,000 cycles/hr, manual override force requirement of 5 lbs/1000 psi at Port 1, manual override stroke of .10 in., solenoid tube diameter of .75 in., hex size of .78 in., installation torque between 30-35 lbf ft (41-47 Nm), and model weight of .60 lb (.30 kg). Seal kits for both cartridge and coil are available with Viton material compatibility.