SUN HYDRAULICS
RBANXWV
- SUN HYDRAULICS
- Material:RBANXWV
- Model:RBAN-XWV
- Summary:Cartridge
Due to extremely high demand, please call 888-905-7411 for availability
The Sun Hydraulics RBANXWV (Material Number: RBANXWV) is a 2-port, pilot-stage, direct-acting relief cartridge designed as an electroproportionally controlled, normally closed pressure regulating valve. This valve is spring-biased to remain closed at its highest customer-specified setting. By increasing the current to the coil, the pressure setting decreases proportionally. When the inlet pressure at port 1 surpasses the spring force minus solenoid force, as determined by an analog input signal, the poppet lifts to allow flow from port 1 to port 2. The valve utilizes a T8A cavity and can be paired with Sun's main stage pressure control elements for seamless integration. Customers must specify a relief setting within a selected pressure range, representing the maximum default relief pressure without command. As command increases, this relief setting decreases steplessly through varying analog input signals. The electroproportional cartridge's high pilot capacity supports larger main stage elements and its damped construction ensures stable operation across diverse conditions. It features low leakage levels when closed and reseats at 85% of cracking pressure. Interchangeable coils with Sun's other solenoid-operated valves allow versatile mounting on either tube direction. Optimal performance is achieved using an amplifier with current sensing and adjustable dither between 100-250 Hz. Installation requires correct torque application for both main stage and T8A pilot control sections to minimize internal part binding due to excessive torque or machining variations. Key specifications include a maximum operating pressure of 5000 psi (350 bar), maximum valve leakage at reseat of 1.5 in/min (.25 cc/min), a solenoid tube diameter of .75 in (19 mm), and installation torque between 20-25 lbf ft (27-33 Nm). The model weight with coil is approximately 1 lb (0.45 kg).
This 2-port, pilot-stage, direct-acting relief cartridge is an electro-proportionally controlled, normally-closed pressure regulating valve. The valve is spring biased closed to its highest setting (customer specified). Increasing current to the coil will proportionally decrease the pressure setting. When the pressure at port 1 (inlet) is sufficient to overcome the spring force minus the solenoid force, as determined by the analog input signal, the poppet lifts and allows flow from port 1 to port 2 (outlet). This pilot control cartridge utilizes the T-8A cavity so it can be used in conjunction with Sun's main stage, pressure control elements.
- Customer must specify a relief setting that falls within the selected pressure range. This setting represents the maximum relief pressure which the valve will default to with no command. As the command increases, the relief setting will decrease. See performance curves for selected pressure range. This setting is not adjustable in the field.
- Varying the analog input signal to the proportional solenoid provides a step-less control of pressure.
- This electro-proportional cartridge utilizes the Sun T-8A, 2-port cavity making it the ideal choice to use in conjunction with Sun's main stage cartridges. Separate pilot lines are eliminated and only one cavity needs to be machined to accommodate both the control and primary function. Note: All 2-port pilot stage control cartridges utilize the same cavity and are physically interchangeable. Functionality is the only consideration.
- High pilot capacity allows for operation of larger size main stage elements.
- Damped construction provides stable operation over a wide range of operating conditions.
- Low leakage levels in the closed position. (Reseat occurs at 85% of cracking pressure.)
- 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.
- Note: The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required torque value.
- 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-8A |
Series | P |
Capacity | .25 gpm1 L/min. |
Maximum Operating Pressure | 5000 psi350 bar |
Maximum Valve Leakage at Reseat | 1.5 in³/min.25 cc/min. |
Reseat | >85% of setting>85% of setting |
Solenoid Tube Diameter | .75 in.19 mm |
Valve Hex Size | 7/8 in.22,2 mm |
Valve Installation Torque | 20 - 25 lbf ft27 - 33 Nm |
Model Weight (with coil) | 1.00 lb0,45 kg |
Seal kit - Cartridge | Viton: 990-208-006 |
Seal and nut kit - Coil | Viton: 990-770-006Viton: 990-770-006 |
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