SUN HYDRAULICS
SDFTLWN
$191.31 USD
- SUN HYDRAULICS
- Material:SDFTLWN
- Model:SDFT-LWN
- 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 SDFTLWN (SDFTLWN) is a pilot-operated, anti-shock sequence cartridge designed to limit maximum system pressure and control the rate of pressure rise. This valve features an adjust screw for setting the maximum relief and minimum threshold pressures, while its external drain ensures insensitivity to pressure at port 2. The internal modulation within the cartridge makes it resistant to cavitation-related issues like noise and manifold erosion. It is not suitable for sequencing cylinders or load-holding applications, but it can handle maximum pressure at port 2, making it apt for cross-port relief circuits. The valve maintains performance despite varying oil temperatures and contamination levels. This model has a capacity of 30 gpm (120 L/min) with a maximum operating pressure of 5000 psi (350 bar). Its control pilot flow ranges from 10 to 25 in\u00b3/min (0.16 to 0.41 L/min), with a typical response time of 2 ms and a pressure ramp-up time between 200-400 ms. Adjustments are made by rotating the screw clockwise up to 4.5 turns to increase settings. Installation requires a torque of 45-50 lbf\u00b7ft (61-68 Nm), while the locknut should be torqued between 80-90 lbf\u00b7in (9-10 Nm). It incorporates Sun's floating style construction, minimizing internal binding due to installation variations. The SDFTLWN is equipped with a main stage orifice protected against contamination and features Viton seals, ensuring durability in various applications. This robust design is ideal for systems where precise control over pressure limits is essential, providing reliable operation even under challenging conditions.
The Sun Hydraulics SDFTLWN (SDFTLWN) is a pilot-operated, anti-shock sequence cartridge designed to limit maximum system pressure and control the rate of pressure rise. This valve features an adjust screw for setting the maximum relief and minimum threshold pressures, while its external drain ensures insensitivity to pressure at port 2. The internal modulation within the cartridge makes it resistant to cavitation-related issues like noise and manifold erosion. It is not suitable for sequencing cylinders or load-holding applications, but it can handle maximum pressure at port 2, making it apt for cross-port relief circuits. The valve maintains performance despite varying oil temperatures and contamination levels. This model has a capacity of 30 gpm (120 L/min) with a maximum operating pressure of 5000 psi (350 bar). Its control pilot flow ranges from 10 to 25 in\u00b3/min (0.16 to 0.41 L/min), with a typical response time of 2 ms and a pressure ramp-up time between 200-400 ms. Adjustments are made by rotating the screw clockwise up to 4.5 turns to increase settings. Installation requires a torque of 45-50 lbf\u00b7ft (61-68 Nm), while the locknut should be torqued between 80-90 lbf\u00b7in (9-10 Nm). It incorporates Sun's floating style construction, minimizing internal binding due to installation variations. The SDFTLWN is equipped with a main stage orifice protected against contamination and features Viton seals, ensuring durability in various applications. This robust design is ideal for systems where precise control over pressure limits is essential, providing reliable operation even under challenging conditions.
Pilot-operated, anti shock sequence cartridges limit maximum system pressure and also limit the rate of pressure rise. The valve opens and then ramps closed at a constant speed, independent of settings and flows. The adjust screw determines the maximum (relief) setting and the minimum (threshold) setting.The external drain makes the valve insensitive to pressure at port 2.
- Because the modulating occurs inside the cartridge, these valves are immune to most of the problems associated with cavitation, namely noise and manifold erosion.
- Pilot flow continues to increase as the pressure at port 1 (inlet), relative to the pressure at port 3 (drain), rises above the valve setting.
- Not suitable for sequncing cylinders.
- Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
- Pressure settings are insensitive to back pressure at port 2.
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
- Valve is relatively insensitive to varying oil temperatures and oil borne contamination.
- Not suitable for use in load holding applications.
- When pressure at the inlet (port 1) exceeds the threshold setting, the valve opens to tank (port 2). The pilot section moves forward at a steady rate, increasing the setting by compressing the pilot spring. Maximum setting is achieved when the pilot section reaches a mechanical stop.
- The main stage orifice is protected against contamination.
- 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-2A |
| Series | 2 |
| Capacity | 30 gpm120 L/min. |
| Factory Pressure Settings Established at | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Control Pilot Flow | 10 - 25 in³/min.0,16 - 0,41 L/min. |
| Response Time - Typical | 2 ms2 ms |
| Pressure Ramp Up Time | 200 - 400 ms200 - 400 ms |
| Adjustment - Number of Clockwise Turns to Increase Setting | 4.54.5 |
| 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 |
| Seal kit - Cartridge | Viton: 990-402-006 |
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