SUN HYDRAULICS
DMDAMNV748
$206.01 USD
- SUN HYDRAULICS
- Material:DMDAMNV748
- Model:DMDA-MNV@748
- Summary:Cartridge
Quantity in stock: 0
***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 DMDAMNV748 (DMDAMNV748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for demanding hydraulic applications. This direct-acting, balanced spool directional valve features a fatigue-rated solenoid tube assembly suitable for up to 5000 psi (350 bar) service. The design includes closed transitions between Spools B and R, optimizing performance by providing faster and more consistent response times ideal for pilot control applications where capacity is less critical. The DMDAMNV748 requires no minimum hydraulic pressure to operate, enhancing its versatility in various system configurations. It incorporates manual override options with a detent mechanism designed for temporary actuation, supporting mechanical life expectancy around 7,000 cycles. The valve is equipped with EPDM seals intended specifically for use with phosphate ester fluids; however, these seals are susceptible to damage from exposure to petroleum-based fluids. Notably, the valve employs a wet armature design which exposes the working fluid to heat generated by the coil\u2014a consideration when using fluids that degrade at high temperatures like water-glycol mixtures. For maintenance and customization, its coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. Additional features include a maximum flow capacity of 12 gpm (45 L/min), swift typical response times of 50 ms, and robust switching frequency capabilities up to 15,000 cycles per hour. The construction of the DMDAMNV748 utilizes Sun\u2019s floating style to minimize internal part binding caused by excessive installation torque or variations in cavity/cartridge machining. This precision-engineered valve ensures reliable operation and effective control in hydraulic systems across various applications.
The Sun Hydraulics DMDAMNV748 (DMDAMNV748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for demanding hydraulic applications. This direct-acting, balanced spool directional valve features a fatigue-rated solenoid tube assembly suitable for up to 5000 psi (350 bar) service. The design includes closed transitions between Spools B and R, optimizing performance by providing faster and more consistent response times ideal for pilot control applications where capacity is less critical. The DMDAMNV748 requires no minimum hydraulic pressure to operate, enhancing its versatility in various system configurations. It incorporates manual override options with a detent mechanism designed for temporary actuation, supporting mechanical life expectancy around 7,000 cycles. The valve is equipped with EPDM seals intended specifically for use with phosphate ester fluids; however, these seals are susceptible to damage from exposure to petroleum-based fluids. Notably, the valve employs a wet armature design which exposes the working fluid to heat generated by the coil\u2014a consideration when using fluids that degrade at high temperatures like water-glycol mixtures. For maintenance and customization, its coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. Additional features include a maximum flow capacity of 12 gpm (45 L/min), swift typical response times of 50 ms, and robust switching frequency capabilities up to 15,000 cycles per hour. The construction of the DMDAMNV748 utilizes Sun\u2019s floating style to minimize internal part binding caused by excessive installation torque or variations in cavity/cartridge machining. This precision-engineered valve ensures reliable operation and effective control in hydraulic systems across various applications.
This solenoid-operated 3-way, 2-position cartridge is a direct-acting, balanced spool directional valve.
- The solenoid tube assembly is fatigue rated for 5000 psi (350 bar) service.
- Spools B and R are closed in the transition between their two positions. This results in a higher performance limit at the expense of lower capacity. When used as pilot controls, where capacity is not a factor, the closed transition will provide faster and more consistent response times.
- This valve is direct actuated and requires no minimum hydraulic pressure for operation.
- On models equipped with the D or L control, the detent mechanism in the manual override is meant for temporary actuation. The D, L and T manual control assembly has a mechanical life expectancy of approximately 7,000 cycles.
- Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
- 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.
- Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted on the tube in either direction.
- 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-11A |
| Series | 1 |
| Capacity | 12 gpm45 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 50 ms50 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 5 in³/min.@3000 psi80 cc/min.@210 bar |
| Switching Frequency | 15000 cycles/hr15000 cycles/hr |
| 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 | .60 lb0,30 kg |
| Seal kit - Cartridge | Viton: 990-411-006 |
| Seal and nut kit - Coil | Viton: 990-770-006Viton: 990-770-006 |
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