Model
DNDFLNN
X-Control, N-Spool
Model: DNDF
4-way, 2-position, solenoid-operated directional spool valve (740 Series)
Cavity: T-31A | Capacity:
Model
DNDFLNN
X-Control, N-Spool
Technical specifications
This solenoid-operated 4-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.
- This valve is direct actuated and requires no minimum hydraulic pressure for operation.
- All configurations of this valve include zinc-nickel plating as standard for 1000-hour salt fog protection.
- Coil connector options offer ratings up to IP69K. See individual coil product pages for details.
- 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 assemblies have a mechanical life expectancy of approximately 7,000 cycles.
- 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.
- Coils 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
- Series
- Capacity10 gpm
- Maximum Operating Pressure5000 psi
- Manual Override Force Requirement5 lbs/1000 psi @ Port 1
- Manual Override Stroke.10 in.
- Maximum Valve Leakage at 110 SUS (24 cSt)10 in³/min.@3000 psi
- Response Time - Typical50 ms
- Switching Frequency15,000 max. cycles/hr
- Solenoid Tube Diameter.63 in.
- Coil Nut Torque3.5 - 3.9 lbf ft
- Valve Hex Size7/8 in.
- Valve Installation Torque30 - 35 lbf ft
- Model Weight.55 lb
- Seal and nut kit - Coil
- Seal kit - Cartridge
- Seal kit - Cartridge
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Highlights
Technical Tips
Technical Information