You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today.

SUN HYDRAULICS
FMDBMCV812


$232.60 USD

Tags:

  • SUN HYDRAULICS
  • Material:FMDBMCV812
  • Model:FMDB-MCV@812
  • Summary:Cartridge

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.
***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 FMDBMCV812 (FMDBMCV812) is a 3-way, meter-in, electro-proportional throttle valve designed for precise flow control in hydraulic systems. When unenergized, the valve blocks supply at port 1 while connecting port 2 to the tank at port 3. Energizing the coil generates a closing force on the spool, creating a metering orifice from port 1 to port 2 that is proportional to the coil command current. This valve offers self-compensation in the 1 to 2 direction and can be pressure compensated with an external compensator for enhanced flow control accuracy. The flow from port 2 to port 3 is not proportional. The transition between valve positions is closed, and using two such valves can create a four-way configuration, allowing for existing flow ranges without requiring custom spools. External modulating logic elements like LRCXHN or LPCXHN can be used for pressure compensation in bypass or restrictive circuits, respectively. All ports are capable of handling up to 5000 psi (350 bar), and coils are interchangeable with other Sun solenoid-operated valves, offering installation flexibility. For optimal performance, an amplifier with current sensing and adjustable dither (100-250 Hz) is recommended. The manual override options include temporary actuation mechanisms with mechanical life expectancies around 7,000 cycles. The momentary-twist override option allows operation by twisting manually by 90 degrees clockwise. The FMDBMCV812 incorporates Sun's floating style construction to minimize internal part binding due to excessive torque or machining variations. It fits into cavity T-11A and has a series capacity of up to 6 gpm (23 L/min). This valve is suitable for applications requiring precise hydraulic flow control across varying pressures and flows.

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

Show FAQ