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SUN HYDRAULICS
FMDBMCV512


$229.40 USD

Tags:

  • SUN HYDRAULICS
  • Material:FMDBMCV512
  • Model:FMDB-MCV@512
  • Summary:Cartridge

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***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics FMDBMCV512 (FMDBMCV512) is a versatile 3-way, meter-in, electro-proportional throttle valve designed for precise flow control in hydraulic systems. This valve features a unique flow path configuration where, in the unenergized state, the supply is blocked at port 1, and port 2 is connected to the tank at port 3. Upon energizing the coil, a closing force is exerted on the spool, forming a metering orifice that allows flow from port 1 to port 2 proportional to the coil command current. The valve offers self-compensation in this direction and can be enhanced with an external compensator for pressure-compensated flow control. However, flow from port 2 to port 3 does not maintain proportionality. The FMDBMCV512 allows for closed transition between positions and can be used with two such valves to create a 4-way configuration, offering flexibility in selecting existing flow ranges without needing custom spools. It supports pressure compensation through an external modulating logic element using LRCXHN or LPCXHN circuits for bypass or restrictive applications respectively. The valve operates effectively under pressures up to 5000 psi (350 bar) across all ports and supports interchangeable coils with other Sun solenoid-operated valves. For optimal performance, it is recommended to use an amplifier with current sensing capabilities and adjustable dither between 100-250 Hz. The manual override options offer temporary actuation with specific force requirements and mechanical life expectancy of approximately 7,000 cycles. The FMDBMCV512 features Sun's floating style construction minimizing internal binding due to installation variances. It fits into T-11A cavities and has a capacity of up to 6 gpm (23 L/min), making it suitable for various hydraulic applications requiring precision flow control.

This valve is a 3-way, meter-in, electro-proportional throttle. The flow path, unenergized, has the supply blocked at port 1 and port 2 connected to tank at port 3. Energizing the coil generates a closing force on the spool, creating a metering orifice in the 1 to 2 direction that is proportional to the coil command current. The valve self-compensates in the 1 to 2 direction and with the addition of an external compensator will provide pressure compensated flow control. Flow in the 2 to 3 direction is not proportional.

  • The transition between positions is closed.
  • Using 2 3-ways to create a 4-way allows one to choose existing flow ranges instead of cutting a special spool.
  • These valves may be pressure compensated by an external, modulating, logic element. Use LR_C-XHN for a bypass circuit or LP_C-XHN for a restrictive circuit.
  • The valve provides a degree of self-compensation and may be used as a flow control. To increase the accuracy of flow control, an external, modulating, logic element can be used to maintain a constant flow over a wider range of flows and pressures. See performance curves for additional information.
  • All ports will accept 5000 psi (350 bar).
  • Coils are interchangeable with Sun's other full flow, solenoid-operated valves and can be mounted on the tube in either direction.
  • For optimum performance, an amplifier with current sensing and adjustable dither should be used. Dither should be adjustable between 100 - 250 Hz.
  • On models equipped with the D or L control, the detent mechanism in the manual override is meant for temporary actuation. The D, E, L and T manual control assemblies have a mechanical life expectancy of approximately 7,000 cycles.
  • The momentary/twist override option "E" allows the operator to shift the valve by twisting the manual override clockwise 90 degrees.
  • 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-11A
Series 1
Capacity 6 gpm23 L/min.
Maximum Valve Leakage at 110 SUS (24 cSt) 2 in³/min.@1000 psi30 cc/min.@70 bar
Manual Override Force Requirement 5 lbs/1000 psi @ Port 133 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 30 - 35 lbf ft41 - 47 Nm
Model Weight (with coil) 1.10 lb0,50 kg
Seal kit - Cartridge Viton: 990-411-006
Seal and nut kit - Coil Viton: 990-770-006Viton: 990-770-006

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