DWBF | Cartridges » Directional » 3-way

This FLeX Series solenoid-operated 3-way, 2-position cartridge is a direct-acting, poppet-style directional valve.

Due to the poppet style construction, this valve has extremely low leakage.

This valve is direct actuated and requires no minimum hydraulic pressure for operation.
Suitable for load-holding applications when configured as Normally Closed. In the event of power failure, the valve will close.
Port 3 is the preferred inlet for this valve. Port 1 is limited to half capacity.
Designed and tested to 10-million operational cycles at full-rated pressure.
Exceeds new NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.
Designed using CFD simulation for optimized geometries.
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.
This valve exhibits extremely low leakage - 0.004 in3 (0,07 cc)/min (1 drop/min).
Manual push-version override options are available in the "A" poppet configurations (DWBF-*A*). The force on the "M" manual override must not exceed 25 lbf (110 N).
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.
A FULL DATA SHEET is available for this model using the link at the top of the page.
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.
A wide variety of coil termination and voltage options are available, with and without surge protection. See the CONFIGURATION section.
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.

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Note: Data may vary by configuration. See CONFIGURATION section.

Cavity	T-150A
Series	0
Capacity	6 gpm23 L/min.
Maximum Operating Pressure	5000 psi350 bar
Maximum Valve Leakage at 110 SUS (24 cSt)	0.004 in³/min.@5000 psi0,07 cc/min.@350 bar
Response Time - Typical	50 ms50 ms
Switching Frequency	10,000 max. cycles/hr10,000 max. cycles/hr
Solenoid Tube Diameter	.63 in.16 mm
Valve Hex Size	3/4 in.19,1 mm
Valve Installation Torque	25 - 30 lbf ft35 - 40 Nm
Model Weight	1.25 lb0,60 kg
U.S. Patent #	10,302,20110,302,201
Seal kit - Cartridge	Buna: 990150007
Seal kit - Cartridge	Viton: 990150006
Seal and nut kit - Coil	Viton: 990740006

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Performance Curve for DWBF: FLeX Series 3-way, direct-acting, solenoid-operated directional blocking poppet valve

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How big is a drop of hydraulic oil?

There are exactly 250 Sun drops in a cubic inch or 15 in a cc.

Direct acting or 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.

Do FLeX valves utilize a floating nose design?

Yes. All FLeX valves utilize the Sun floating nose design.

What is the difference between nominal and maximum flow capacity?

Nominal flow capacity is based on performance limits. Maximum flow capacity is based on pressure drop. When selecting any direct-acting solenoid valve, first check the performance limits plot, then check if pressure drop is acceptable.

What parts of the Sun cartridge valve are field serviceable?

Only external seals are serviceable. Sun offers replacement seal kits for all cartridge models. The applicable kit part number can be found in the product page's Technical Data table or by using our Cartridge Seal Kit search function located under Accessories. Please note: Converting the external seals from one material to another does not ensure fluid compatibility with that material due to the existence of internal seals within the cartridge.

Is the FLeX program available in QuickDesign SmartConnect?

Yes. All FLeX phase 1 valves are available in the SmartConnect schematic tool, and are also available for submittal to QuickDesign.

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991283 740 Series momentary/twist operation, manual override control kit, T control
991284 740 Series detent/lock operation, manual override control kit, L control
991285 740 Series dual twist/lock operation, manual override control kit, D control
991301 740 Series, red momentary/twist operation, manual override control kit, T control
991302 740 Series, red detent/lock operation, manual override control kit, L control
991303 740 Series, red dual twist/lock operation, manual override control kit, D control

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Please verify cartridge clearance requirements when choosing a Sun manifold. Different valve controls and coils require different clearances.
An additional 2.00 inches (50,8 mm) beyond the valve extension is needed for coil installation and removal.
Sun Hydraulics bases solenoid valve performance data on testing at maximum ambient temperature (50° C) and 15% undervoltage at stabilized current (580 mA). This ensures that our data represents valve performance under worst-case conditions.

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Highlights