SUN HYDRAULICS
FKBBXCV
$133.44 USD
- SUN HYDRAULICS
- Material:FKBBXCV
- Model:FKBB-XCV
- 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 FKBBXCV (FKBBXCV) 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 tension, and pilot pressure, offering partial self-compensation as load pressures fluctuate. A notable feature is its bleed down capability, which connects ports 3 to 4 when in the spring-biased position, beneficial for circuits with counterbalance valves downstream of port 3. As pilot pressure increases at port 1, this connection closes. For enhanced control, an optional tuning adjustment (L control) allows variation of the pilot pressure needed to manage flow, with an adjustment range from 50 to 450 psi (3.5 to 30 bar), and a standard setting at 100 psi (7 bar). The valve can be integrated into systems requiring external pressure compensation using modulating logic elements like LRCXHN for bypass circuits or LPCXHN for restrictive circuits. It supports accurate flow control by maintaining a constant pressure differential across the valve. The FKBBXCV employs Sun's floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. It fits into T21A cavities and operates within a capacity of up to 5 gpm (20 L/min) and a maximum operating pressure of 5000 psi (350 bar). The valve ensures minimal leakage with specified limits and requires a minimum pilot pressure of 100 psi (7 bar) for operation. With precise specifications on installation torque and adjustment settings, this valve is engineered for reliable performance in demanding hydraulic applications.
The Sun Hydraulics FKBBXCV (FKBBXCV) 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 tension, and pilot pressure, offering partial self-compensation as load pressures fluctuate. A notable feature is its bleed down capability, which connects ports 3 to 4 when in the spring-biased position, beneficial for circuits with counterbalance valves downstream of port 3. As pilot pressure increases at port 1, this connection closes. For enhanced control, an optional tuning adjustment (L control) allows variation of the pilot pressure needed to manage flow, with an adjustment range from 50 to 450 psi (3.5 to 30 bar), and a standard setting at 100 psi (7 bar). The valve can be integrated into systems requiring external pressure compensation using modulating logic elements like LRCXHN for bypass circuits or LPCXHN for restrictive circuits. It supports accurate flow control by maintaining a constant pressure differential across the valve. The FKBBXCV employs Sun's floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. It fits into T21A cavities and operates within a capacity of up to 5 gpm (20 L/min) and a maximum operating pressure of 5000 psi (350 bar). The valve ensures minimal leakage with specified limits and requires a minimum pilot pressure of 100 psi (7 bar) for operation. With precise specifications on installation torque and adjustment settings, this valve is engineered for reliable performance in demanding hydraulic applications.
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.
- 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 - 450 psi (3,5 - 30 bar), 100 psi (7 bar) Standard Setting.
- 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.
- 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-21A |
| Series | 1 |
| Capacity | 5 gpm20 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 | .02 in³0,33 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 | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 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: 990-021-006 |
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