This valve is a normally closed, electro-proportional, blocking poppet throttle that is spring-biased closed. Energizing the coil generates an opening force on the poppet proportional to the command current, and this force is countered by the spring and flow forces. This force balance creates a metering orifice whose effective size is proportional to the current. The valve exhibits a large degree of self-compensation in the 2-to-1 direction and will provide proportional flow control in the 1-to-2 direction with the addition of an external compensator. Full reverse flow (1-to-2) with 100% command in the 1-to-2 direction is possible without a compensator under all conditions.

• For optimum performance, an amplifier with current sensing and adjustable dither should be used. Dither should be adjustable between 100 - 250 Hz.
• FLeX Series proportional valves are fully compatible with the XMD Expandable Mobile Drivers from Sun.
• Exceeds new NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.
• Designed using CFD fluid simulation for optimized geometries.
• Capacities rated at 200-psi (14-bar) differential.
• 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.
• Designed and tested to 1 million on-off operational cycles.
• Direct actuated and requires no minimum hydraulic pressure for operation.
• This valve exhibits a large degree of self-compensation in the 2-to-1 direction and will provide proportional flow control in the 1-to-2 direction with the addition of an external compensator.
• Full reverse flow (1-to-2) with 100% command in the 1-to-2 direction is possible without a compensator under all conditions.
• 50-psi (3,5-bar) minimum back pressure is recommended.
• Extremely low leakage - 0.004 in3 (0.07 cc3)/min (1 drop/min)
• A FULL DATA SHEET is available for this model using the link at the top of the page.
• 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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