SUN HYDRAULICS
FKDBLCV
$191.51 USD
- SUN HYDRAULICS
- Material:FKDBLCV
- Model:FKDB-LCV
- Summary:Cartridge
Quantity in stock: 0
***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 FKDBLCV (Material Number: FKDBLCV) is a versatile 2-way, 2-position proportional throttle valve designed for precise flow control in hydraulic systems. This valve features normally closed ports 2 and 3, with pilot pressure at port 1 creating a metering orifice between these ports that adjusts proportionally to the pressure at port 1. The valve's design incorporates a force balance of flow forces, spring, and pilot pressure, allowing for partial self-compensation as load pressure varies. A notable feature is its bleed down capability, which connects ports 3 to 4 when in the spring-biased position, making it particularly useful in circuits with counterbalance valves downstream of port 3. As pilot pressure increases at port 1, this bleed down connection closes. For enhanced performance, the valve can be pressure compensated using external modulating logic elements like LRCXHN for bypass circuits or LPCXHN for restrictive circuits. It provides a degree of self-compensation and can be utilized as a flow control device. To achieve more accurate flow control over varying pressures and flows, an external modulating logic element is recommended. Ports 1 and 4 should not exceed pressures of 500 psi (35 bar), as pressure at port 4 directly counteracts that at port 1. The FKDBLCV model includes an optional tuning adjustment (L control) to vary the pilot pressure needed for flow regulation, with an adjustment range from 50 to 300 psi (3.5 to 20 bar). Constructed with Sun's floating style design, this valve minimizes internal part binding due to excessive torque or machining variations during installation. It fits into a T22A cavity and has a capacity of up to 10 gpm (40 L/min), supporting maximum operating pressures up to 5000 psi (350 bar). The valve's compact size and robust construction make it suitable for applications requiring reliable and precise hydraulic flow control.
The Sun Hydraulics FKDBLCV (Material Number: FKDBLCV) is a versatile 2-way, 2-position proportional throttle valve designed for precise flow control in hydraulic systems. This valve features normally closed ports 2 and 3, with pilot pressure at port 1 creating a metering orifice between these ports that adjusts proportionally to the pressure at port 1. The valve's design incorporates a force balance of flow forces, spring, and pilot pressure, allowing for partial self-compensation as load pressure varies. A notable feature is its bleed down capability, which connects ports 3 to 4 when in the spring-biased position, making it particularly useful in circuits with counterbalance valves downstream of port 3. As pilot pressure increases at port 1, this bleed down connection closes. For enhanced performance, the valve can be pressure compensated using external modulating logic elements like LRCXHN for bypass circuits or LPCXHN for restrictive circuits. It provides a degree of self-compensation and can be utilized as a flow control device. To achieve more accurate flow control over varying pressures and flows, an external modulating logic element is recommended. Ports 1 and 4 should not exceed pressures of 500 psi (35 bar), as pressure at port 4 directly counteracts that at port 1. The FKDBLCV model includes an optional tuning adjustment (L control) to vary the pilot pressure needed for flow regulation, with an adjustment range from 50 to 300 psi (3.5 to 20 bar). Constructed with Sun's floating style design, this valve minimizes internal part binding due to excessive torque or machining variations during installation. It fits into a T22A cavity and has a capacity of up to 10 gpm (40 L/min), supporting maximum operating pressures up to 5000 psi (350 bar). The valve's compact size and robust construction make it suitable for applications requiring reliable and precise hydraulic flow control.
This valve is a 2-way, 2 position, proportional throttle. Ports 2 and 3 are normally closed. Pilot pressure at port 1 creates a metering orifice between port 2 and 3 that is proportional to the pressure at 1. The force balance of the flow forces, spring and pilot pressure results in a degree of partial self-compensation as the load pressure changes.
This valve includes a bleed down feature which connects ports 3 to 4 in the spring biased position. The bleed down feature is useful when the valve is used as a meter-in flow control in circuits which include counterbalance valves downstream of port 3. The bleed down connection is closed as the valve is piloted with increasing pressure at port 1.
Pressure at port 4 directly opposes pressure at port 1.
- 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.
- Ports 1 and 4 should be limited to 500 psi (35 bar).
- Pressure at port 4 directly opposes pressure at port 1.
- An optional tuning adjustment (L control) is offered to vary the pilot pressure required to control flow. The tuning adjustment provides a means to manually increase or decrease flow at a given pilot pressure. The adjustment range is 50 - 300 psi (3,5 - 20 bar), 100 psi (7 bar) Standard Setting.
- Accurate pressure compensated control requires that a constant pressure differential be maintained across the valve.
- 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-22A |
| Series | 2 |
| Capacity | 10 gpm40 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 2 in³/min.@1000 psi30 cc/min.@70 bar |
| Pilot Volume Displacement | .30 in³4,9 cc |
| Minimum Pilot Pressure to Operate | 100 psi7 bar |
| Bypass orifice | .03 in.0,8 mm |
| Hysteresis | ± 2 %± 2 % |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 1/8 in.28,6 mm |
| Valve Installation Torque | 45 - 50 lbf ft61 - 68 Nm |
| Adjustment Screw Internal Hex Size | 5/32 in.4 mm |
| Locknut Hex Size | 9/16 in.15 mm |
| Locknut Torque | 80 - 90 lbf in.9 - 10 Nm |
| Model Weight | .30 lb0,15 kg |
| Seal kit - Cartridge | Viton: 990-022-006 |
Show FAQ