FLeX Series 3-way, direct-acting, electro-proportional, bypass/restrictive, priority flow control valve

This valve is a normally closed, electro-proportional, bypass/restrictive, priority flow control valve. The valve takes an input flow at port 1 and uses it to satisfy the priority flow at port 3. If the input flow exceeds the priority requirement, the excess is bypassed out port 2. The valve pressure compensates the priority flow for precise flow regulation for applications where there may be wide pressure fluctuations. Port 2 may also be completely blocked so that the valve can be used as a 2-way, electro-proportional pressure compensated flow control from 1 to 3.

• The valve's patent-pending design uses a pull-type solenoid that allows the main throttle spool to be less sensitive to flow forces, resulting in greater efficiencies, with more flow control using less power.
• FLeX Series proportional valves are fully compatible with the XMD Expandable Mobile Drivers from Sun.
• Designed and tested to 10 million on-off operational cycles.
• Exceeds new NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.
• Designed using CFD fluid simulation for optimized geometries.
• All configurations of this valve include zinc-nickel plating as standard for 1000-hour salt fog protection.
• This valve can be used with both the 740 Series high-power coils and 747 Series hazardous location coils.
• A wide variety of coil termination and voltage options are available, with and without surge protection. See the CONFIGURATION section.
• Coil connector options offer ratings up to IP69K. See individual coil product pages for details.
• Both, priority and bypass flow, are usable up to the system operating pressure.
• For optimum performance, an amplifier with current feedback and adjustable dither (80 - 250 Hz) should be used.
• Bypass flow is not available until priority flow requirements are satisfied.
• Pressure at the bypass port (port 2) may exceed pressure at the priority port (port 3).
• In applications where the priority flow will be blocked completely, bypass pressure drop will increase over time unless a leak path is provided for the priority flow.
• Priority flow remains relatively constant regardless of variation in input flow.
• The minimum bleed at port 3 must meet or exceed the published leakage numbers.
• 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.

Model CAD Files

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FREPXAN.dwg

FREPXAN.dxf

FREPXAN.prt

FREPXAN.stp

Symbol CAD Files

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.dwg

.dxf