SUN HYDRAULICS
DMDAMRV728
$206.01 USD
- SUN HYDRAULICS
- Material:DMDAMRV728
- Model:DMDA-MRV@728
- 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 DMDAMRV728 (DMDAMRV728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for robust hydraulic applications. This direct-acting, balanced spool directional valve ensures precise control in various hydraulic systems. With a maximum operating pressure of 5000 psi (350 bar) and a flow capacity of 12 gpm (45 L/min), it is engineered to handle demanding tasks efficiently. The valve features closed transitions between spools B and R, enhancing performance by providing faster and more consistent response times, especially suitable for pilot controls where capacity is less critical. This model is equipped with EPDM seals specifically for use with phosphate ester fluids, cautioning against exposure to petroleum-based fluids which could damage the seals. Additionally, the DMDAMRV728 incorporates a wet armature design; the heat generated by the coil when energized can affect fluid integrity over prolonged periods, particularly impacting water-glycol mixtures. Interchangeable coils from Sun Series 1 solenoid products can be mounted in either direction on this valve, adding to its versatility and ease of maintenance. The construction utilizes Sun's floating style to minimize internal part binding that might result from excessive installation torque or cavity/cartridge machining variations. Other technical specifications include a typical response time of 50 ms, maximum valve leakage at 3000 psi rated as 5 in\u00b3/min., and a switching frequency capable of reaching up to 15,000 cycles/hr. Manual override features require an actuation force of about 5 lbs at 1000 psi for port operation. The manual override stroke measures approximately .10 in (2.5 mm), ensuring user-friendly interaction for temporary manual actuation scenarios. This model is both durable and reliable with a mechanical life expectancy of about 7,000 cycles for models equipped with D or L control detent mechanisms in the manual override setup.
The Sun Hydraulics DMDAMRV728 (DMDAMRV728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for robust hydraulic applications. This direct-acting, balanced spool directional valve ensures precise control in various hydraulic systems. With a maximum operating pressure of 5000 psi (350 bar) and a flow capacity of 12 gpm (45 L/min), it is engineered to handle demanding tasks efficiently. The valve features closed transitions between spools B and R, enhancing performance by providing faster and more consistent response times, especially suitable for pilot controls where capacity is less critical. This model is equipped with EPDM seals specifically for use with phosphate ester fluids, cautioning against exposure to petroleum-based fluids which could damage the seals. Additionally, the DMDAMRV728 incorporates a wet armature design; the heat generated by the coil when energized can affect fluid integrity over prolonged periods, particularly impacting water-glycol mixtures. Interchangeable coils from Sun Series 1 solenoid products can be mounted in either direction on this valve, adding to its versatility and ease of maintenance. The construction utilizes Sun's floating style to minimize internal part binding that might result from excessive installation torque or cavity/cartridge machining variations. Other technical specifications include a typical response time of 50 ms, maximum valve leakage at 3000 psi rated as 5 in\u00b3/min., and a switching frequency capable of reaching up to 15,000 cycles/hr. Manual override features require an actuation force of about 5 lbs at 1000 psi for port operation. The manual override stroke measures approximately .10 in (2.5 mm), ensuring user-friendly interaction for temporary manual actuation scenarios. This model is both durable and reliable with a mechanical life expectancy of about 7,000 cycles for models equipped with D or L control detent mechanisms in the manual override setup.
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 |
Show FAQ