SUN HYDRAULICS
DNCALZV548

***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 DNCALZV548 (DNCALZV548) is a solenoid-operated, 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool design. This directional valve is notable for its closed transition between positions, which significantly minimizes oil loss during shifting \u2014 a crucial advantage in pilot control circuits. Designed with port 3 as the inlet and port 1 as the tank, it offers optimal performance in this configuration, although reverse flow is possible but not recommended due to potential performance issues. The valve's solenoid tube assembly is built to withstand fatigue at pressures up to 5000 psi (350 bar), ensuring reliable operation under demanding conditions without requiring any minimum hydraulic pressure. The DNCALZV548 employs EPDM seals specifically for systems utilizing phosphate ester fluids; these seals are incompatible with petroleum-based fluids and lubricants. The wet armature design allows the working fluid to surround the armature, which can lead to heat exposure if the coil remains energized for extended periods. This design yields high efficiency with substantial spool actuating force per watt of power used, promoting dependable valve operation. Offering various coil termination and voltage options \u2014 some providing surge protection \u2014 this model accommodates diverse application needs. Coils are interchangeable within Sun Series 1 solenoid products and can be mounted in either direction on the tube. The valve supports IP69K-rated coil connector options for enhanced environmental protection and incorporates Sun's floating style construction to reduce internal binding risks due to installation torque or machining variations. With a capacity of 8 gpm (30 L/min) and a maximum operating pressure of 5000 psi (350 bar), this model features a typical response time of 50 ms and can handle switching frequencies up to 15,000 cycles per hour. The manual override requires minimal force and stroke, adding operational flexibility.