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SUN HYDRAULICS CORP
DBALMHN728
Solenoid Operated

Cartridge

SUN HYDRAULICS CORP

MATERIAL:  DBALMHN728

SUMMARY:  Cartridge

Due to extremely high demand, please call 888-651-5712 for availability

This solenoid-operated 3-way, 2-position cartridge is a direct-acting, balanced spool pilot valve used to pilot other full-flow valves. The valve is normally open between port 1 and port 2 or port 1 and port 3 and all flow paths are bidirectional.

  • Model DBAL integrates the same coil, connector, and manual override options that are currently available on Series 1 valves. The DBAL is interchangeable with the DBAA except for the external coil dimensions and higher coil wattage.
  • The solenoid tube assembly is fatigue rated for 5000 psi (350 bar) service.
  • This valve is direct actuated and requires no minimum hydraulic pressure for operation.
  • Valves exhibit extremely low leakage rates; less than 10 drops/min. @ 5000 psi (0,7 cc/min @ 350 bar).
  • 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 cartridge has several manual override choices, including no manual override. See the CONFIGURATION section. Please note: Manual override functionality is not compatible with weatherized coils.
  • 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.
  • 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-9A
Series P
Capacity .25 gpm1 L/min.
Maximum Operating Pressure 5000 psi350 bar
Response Time - Typical 50 ms50 ms
Maximum Valve Leakage at 110 SUS (24 cSt) 10 drops/min.@5000 psi0,7 cc/min.@350 bar
Switching Frequency 15000 cycles/hr15000 cycles/hr
Manual Override Force Requirement 10 lbs/1000 psi @ Port 166 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 20 - 25 lbf ft27 - 33 Nm
Seal kit - Cartridge Viton: 990-009-006
Seal and nut kit - Coil Viton: 990-770-006Viton: 990-770-006

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