SUN HYDRAULICS
DMDAMRV228

***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 DMDAMRV228 (DMDAMRV228) is a solenoid-operated 3-way, 2-position cartridge valve designed for high-performance hydraulic systems. This direct-acting, balanced spool directional valve ensures reliable control of fluid flow with its robust design that includes a fatigue-rated solenoid tube assembly capable of handling pressures up to 5000 psi (350 bar). The valve features closed transitions between spool positions B and R, optimizing performance by providing faster and more consistent response times, particularly suitable for applications as pilot controls where capacity is less critical. The DMDAMRV228 operates without the need for minimum hydraulic pressure, enhancing its versatility across various hydraulic applications. It includes manual override options with a detent mechanism designed for temporary actuation, supporting mechanical life expectancy around 7,000 cycles. The configuration with EPDM seals makes it ideal for systems using phosphate ester fluids while cautioning against exposure to petroleum-based substances that could damage the seals. This model incorporates a wet armature design where the working fluid surrounds the armature, potentially affecting performance if the coil remains energized over extended periods due to heat exposure. For maintenance and compatibility ease, its coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. Additionally, it features Sun's floating style construction which minimizes internal parts binding resulting from excessive installation torque or variations in cavity/cartridge machining. With specifications like a maximum flow capacity of 12 gpm (45 L/min), rapid response times typically around 50 ms, and very low maximum valve leakage at high pressures, the DMDAMRV228 is engineered to meet demanding operational requirements efficiently. It supports frequent switching up to 15,000 cycles per hour and is designed with practical dimensions including a manual override force requirement of 5 lbs at 1000 psi for port 1. This model proves essential for high-stakes environments requiring precise hydraulic control.