SUN HYDRAULICS
DNCALZV712

***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 DNCALZV712 (DNCALZV712) is a solenoid-operated, 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control. This valve features a closed transition between positions to minimize oil loss during shifting, which is particularly advantageous in pilot control circuits. The valve's capacity is optimized with port 3 as the inlet and port 1 as the tank; while reverse flow is possible, it is not recommended due to potential performance inconsistencies. The solenoid tube assembly is fatigue-rated for up to 5000 psi (350 bar), ensuring robust service life under demanding conditions. This direct-actuated valve does not require minimum hydraulic pressure for operation and incorporates EPDM seals suitable for systems with phosphate ester fluids; however, these seals are incompatible with petroleum-based fluids. The DNCALZV712 employs a wet armature design where the working fluid surrounds the armature, potentially exposing it to coil-generated heat. This could affect fluid stability over time, especially in water-glycol mixtures prone to varnish formation at elevated temperatures. The high-efficiency solenoid design delivers substantial spool actuating force per watt of energy consumed, ensuring reliable valve shifting. Coils are interchangeable with other Sun Series 1 products and can be mounted in either direction on the tube. Various coil termination and voltage options are available, some offering IP69K ratings for enhanced environmental protection. The cartridge uses Sun's floating style construction to reduce the risk of internal binding due to excessive installation torque or cavity machining variations. It fits into a T-31A cavity and offers an operational capacity of 8 gpm (30 L/min). With a typical response time of 50 ms and a switching frequency of up to 15,000 cycles per hour, this valve provides efficient performance in hydraulic systems requiring precise directional control.