SUN HYDRAULICS
DMDAZRN211

***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 DMDAZRN211 (DMDAZRN211) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve. This direct-acting, balanced spool directional valve is uniquely designed for efficient control in hydraulic systems. It features a closed transition between positions, minimizing oil loss during shifting\u2014especially critical in pilot control circuits. The DMDAZRN211 is equipped with a position switch that confirms the valve's status in the spring-biased position, enhancing operational reliability. This model requires an accompanying coil which must be ordered separately and comes with various termination and voltage options to suit different system requirements. Notably, this valve operates without needing a minimum hydraulic pressure and incorporates a wet armature design; hence it remains surrounded by working fluid which helps manage heat during prolonged coil energization. Such characteristics are vital for maintaining fluid integrity, particularly when using water-glycol mixtures that can degrade under heat. For installation, the DMDAZRN211 uses a crow's foot wrench due to the position switch setup that prevents the use of a deep socket wrench. Its robust design includes Sun's floating style construction which prevents internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. The valve features impressive specifications including a maximum operating pressure of 5000 psi (350 bar), capacity up to 12 gpm (45 L/min), and rapid response times typically around 50 ms. It also has excellent durability ratings with fatigue resistance for up to 5000 psi service and switching frequency capabilities up to 15,000 cycles per hour. In terms of maintenance and warranty considerations, the DMDAZRN211 is supplied as a sealed unit from Sun Hydraulics; it is factory-set and not field-serviceable. Any necessary adjustments or servicing must be handled by returning it to the manufacturer to avoid voiding its warranty. This model also supports cartridges configured with EPDM seals specifically for use with phosphate ester fluids while avoiding exposure to petroleum-based substances that could damage these seals.