SUN HYDRAULICS
DPBNKWN
$136.22 USD
- SUN HYDRAULICS
- Material:DPBNKWN
- Model:DPBN-KWN
- 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 DPBNKWN (DPBNKWN) is a normally closed, pilot-operated, 2-way directional cartridge valve designed for moderate flow circuits. This versatile component can function independently or in conjunction with larger pilot-operated directional or logic cartridges. The valve operates by shifting when the pressure differential between port 1 and port 4 exceeds a preset threshold. Port 4 can be blocked to prevent shifting, while port 3 is available for use as a work port. Direct-acting and pilot-operated versions are interchangeable, sharing the same cavity and flow paths. However, this valve is not bistable; it modulates between two positions based on system demands. The DPBNKWN features Sun's floating style construction to reduce the risk of internal binding due to installation torque variations or machining discrepancies. It has a capacity of 7 gallons per minute (28 liters per minute) and operates at maximum pressures up to 5000 psi (350 bar). The valve is designed with a T-21A cavity and is part of Series 1. Factory pressure settings are established at a flow rate of 4 gpm (15 L/min), with an adjustment range facilitated by up to 5.5 clockwise turns. The control pilot flow ranges from 7 to 10 cubic inches per minute (0.11 to 0.16 L/min), while maximum valve leakage at standard viscosity conditions is limited to 1 cubic inch per minute at 1000 psi (15 cc/min at 70 bar). Installation requires specific torque values: the valve itself needs between 30-35 lbf-ft (41-47 Nm), while the locknut requires torque between 80-90 lbf-in (9-10 Nm). The internal hex size for adjustments is set at \\( \\frac{5}{32} \\) inches (4 mm).
The Sun Hydraulics DPBNKWN (DPBNKWN) is a normally closed, pilot-operated, 2-way directional cartridge valve designed for moderate flow circuits. This versatile component can function independently or in conjunction with larger pilot-operated directional or logic cartridges. The valve operates by shifting when the pressure differential between port 1 and port 4 exceeds a preset threshold. Port 4 can be blocked to prevent shifting, while port 3 is available for use as a work port. Direct-acting and pilot-operated versions are interchangeable, sharing the same cavity and flow paths. However, this valve is not bistable; it modulates between two positions based on system demands. The DPBNKWN features Sun's floating style construction to reduce the risk of internal binding due to installation torque variations or machining discrepancies. It has a capacity of 7 gallons per minute (28 liters per minute) and operates at maximum pressures up to 5000 psi (350 bar). The valve is designed with a T-21A cavity and is part of Series 1. Factory pressure settings are established at a flow rate of 4 gpm (15 L/min), with an adjustment range facilitated by up to 5.5 clockwise turns. The control pilot flow ranges from 7 to 10 cubic inches per minute (0.11 to 0.16 L/min), while maximum valve leakage at standard viscosity conditions is limited to 1 cubic inch per minute at 1000 psi (15 cc/min at 70 bar). Installation requires specific torque values: the valve itself needs between 30-35 lbf-ft (41-47 Nm), while the locknut requires torque between 80-90 lbf-in (9-10 Nm). The internal hex size for adjustments is set at \\( \\frac{5}{32} \\) inches (4 mm).
Normally closed, pilot-operated, 2-way directional cartridges are switching devices typically used in moderate flow circuits. They can be used by themselves or to actuate larger pilot operated directional cartridges or logic cartridges. The valve shifts when the pressure differential between port 1 and port 4 exceeds the setting.
- Port 4 can be blocked to prevent the valve from shifting.
- Port 3 can be used as a work port.
- Direct-acting and pilot-operated versions of these valves are interchangeable. They fit the same cavities and have the same flow paths.
- Pressure at port 4 is directly additive to the setting of the valve.
- This valve is not bistable; it is capable of modulating between the two positions shown.
- Maximum pressure at port 3 should be limited to 3000 psi (210 bar). This is due to fatigue strength limits not hydraulic operating limits.
- When pilot pressure exceeds the valve setting, pilot flow may be a consideration. See performance curves for pilot consumption vs. load pressure above the valve setting. If this is a problem, the direct acting version of this valve would be a solution.
- 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 | 7 gpm28 L/min. |
| Factory Pressure Settings Established at | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Control Pilot Flow | 7 - 10 in³/min.0,11 - 0,16 L/min. |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 1 in³/min.@1000 psi15 cc/min.@70 bar |
| 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 | .60 lb0,30 kg |
| Seal kit - Cartridge | Viton: 990-021-006 |
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