Sun Hydraulics DTDASHV298 电磁阀-产品快照

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Sun Hydraulics DTDASHV298 电磁阀

DTDASHV298 - 2-way, direct-acting, soft shift, solenoid-operated directional poppet valve

Sun Hydraulics

This solenoid-operated 2-way, 2-position cartridge is a direct-acting, poppet-style valve with a soft shift feature. The soft shift feature greatly reduces system shock due to valve actuation. The valve is available in either a normally open or normally closed configuration. Due to its poppet-style construction, this valve has extremely low leakage. The soft shift cartridge is interchangeable with the standard cartridge, however, the performance limits are lower. The soft shift feature can greatly reduce shock due to valve actuation but should not be counted upon in applications where timing is critical. If you need accurate ramping or timing control, consider Sun's electro-proportional valves. The soft shift feature results in significant increase in response time over Sun's standard solenoid. Response time is dependant on flow, pressure, coil voltage, oil viscosity and ambient temperature. Typical response time ranges from 150 ms to 300 ms. For consistent soft shift performance, port 1 should be at a positive pressure. This valve includes a push-type manual override control. Other manual control options such as T or D, cannot be ordered with the soft shift control but can be installed easily in the field. See Twist/Lock Manual Override link above for details. Please note: Manual override functionality is not compatible with weatherized coils. The solenoid tube assembly is fatigue rated for 5000 psi (350 bar) service. This valve is suitable for load holding applications when using the Normally Closed option. In the event of power failure, the valve will spring closed. This valve utilizes a wet armature design. This means that the working fluid surrounds the armature and is exposed to the heat generated by the coil. This can be a factor if the coil is energized for long periods of time. Some fluids, notably water/glycol mixtures, break down at these temperatures over time and form varnishes that will affect the function of the cartridge. The solenoid's unique magnetic design results in a high efficiency solenoid, yielding high spool actuating force per Watt expended, leading to reliable valve shifting. Coil connector options offer ratings up to IP69K. See individual coil product pages for details. Additional weatherized coils and kits are available for more complete environmental protection. Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations. Cavity T-13A Series 1 Capacity 4 gpm15 L/min. Maximum Operating Pressure 5000 psi350 bar Maximum Valve Leakage at 110 SUS (24 cSt) 10 drops/min.@5000 psi0,7 cc/min.@350 bar Manual Override Force Requirement 5 lbs/1000 psi @ Port 133 N/100 bar @ Port 1 Manual Override Stroke .10 in.2,5 mm Solenoid Tube Diameter .75 in.19 mm Valve Hex Size 7/8 in.22,2 mm Valve Installation Torque 30 - 35 lbf ft41 - 47 Nm Model Weight .50 lb0,25 kg Seal kit - Cartridge Viton: 990-413-006 Show FAQ How big is a drop of hydraulic oil? There are exactly 250 Sun drops in a cubic inch or 15 in a cc. I used a DP** in a circuit but it hangs. What happened? DP**s and DR**s are from the reducer/reliever family and are very capable of modulating. They are not bistable. Where would I use a DR__ instead of a DP__? In many circuits the directional cartridge is set to shift at a low pressure no matter how high the pilot pressure goes. If you use a DP__ , the pilot flow increases to significant amounts. A DR__ however will only consume a small amount of flow. A DP__ is useful when you want to block or open the pilot flow to shift the valve. Direct acting, pilot operated, what do I use? Direct acting valves are used to prevent over pressure and pilot operated valves are used to regulate pressure. If you are unsure, use a direct acting valve. Sun's direct acting valves are very fast, dirt tolerant, stable, and robust. Sun's pilot operated valves are moderately fast, they have a low pressure rise vs. flow curve, and they are easy to adjust. What is the difference between DLDA and DLDB? The overall functionality of the cartridges are the same. Due to the differences in construction between the two, specific ratings will vary. See technical data attributes for details. Coils are also not interchangeable. Related Files Technical TipsTechnical Tips for Manufacturing Sun Cartridge Cavities (522.27 KB) Technical Tips for Solenoid Coils for Switching and Proportional (975.2 KB) Technical Tips for Solenoid Operated Directional Valves (1.01 MB) Sun's Floating Style Screw-In Cartridge (719.9 KB) Sun Model Code Explanation; 999-901-334 (343.9 KB)

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