SUN HYDRAULICS
RPGTCWN
$178.60 USD
- SUN HYDRAULICS
- Material:RPGTCWN
- Model:RPGT-CWN
- Summary:Cartridge
Due to extremely high demand, please call for availability
***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 RPGTCWN (Material Number: RPGTCWN) is a pilot-operated, anti-shock relief cartridge designed to limit maximum system pressure and control the rate of pressure rise. It features an adjustable screw that determines both the maximum relief setting and the minimum threshold setting. This valve is physically and functionally interchangeable with all 2-port relief cartridges except pilot reliefs, making it suitable for cross port relief circuits but not for load holding applications. The valve operates by opening to tank port 2 when inlet port 1 pressure exceeds the threshold, with a pilot section that moves forward at a steady rate to increase the setting. It provides crucial protection for pumps and motors from pressure transients due to sudden load changes, particularly beneficial for variable displacement pumps. Additionally, it helps reduce jerks in hydrostatic drives during sudden reversals and can mimic ramp characteristics typical of proportional valves when used with a switching device. Notably, small power units can be started against an anti-shock relief to extend pump life. The valve's design incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. It has a capacity of 50 gpm (200 L/min), a maximum operating pressure of 5000 psi (350 bar), and features such as response time typical of 2 ms, and pressure ramp-up time between 200-400 ms. The adjustment requires approximately 4.5 clockwise turns to increase settings, with specific torque requirements for installation and adjustments provided in its specifications.
The Sun Hydraulics RPGTCWN (Material Number: RPGTCWN) is a pilot-operated, anti-shock relief cartridge designed to limit maximum system pressure and control the rate of pressure rise. It features an adjustable screw that determines both the maximum relief setting and the minimum threshold setting. This valve is physically and functionally interchangeable with all 2-port relief cartridges except pilot reliefs, making it suitable for cross port relief circuits but not for load holding applications. The valve operates by opening to tank port 2 when inlet port 1 pressure exceeds the threshold, with a pilot section that moves forward at a steady rate to increase the setting. It provides crucial protection for pumps and motors from pressure transients due to sudden load changes, particularly beneficial for variable displacement pumps. Additionally, it helps reduce jerks in hydrostatic drives during sudden reversals and can mimic ramp characteristics typical of proportional valves when used with a switching device. Notably, small power units can be started against an anti-shock relief to extend pump life. The valve's design incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. It has a capacity of 50 gpm (200 L/min), a maximum operating pressure of 5000 psi (350 bar), and features such as response time typical of 2 ms, and pressure ramp-up time between 200-400 ms. The adjustment requires approximately 4.5 clockwise turns to increase settings, with specific torque requirements for installation and adjustments provided in its specifications.
Pilot-operated, anti shock relief 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.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
- 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.
- Valve provides protection for pumps and motors from pressure transients due to sudden load changes, especially variable displacement pumps, since the displacement mechanism is sometimes too slow to catch these pressure transients.
- Valve provides protection for hydrostatic drives by reducing the jerk caused by sudden reversals. The valve is suitable for cross-port applications.
- When used with a switching device, the valve can provide the ramp characteristic typically provided by proportional valves.
- Small power units can be started against an anti shock relief to provide longer pump life.
- Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
- 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-3A |
| Series | 2 |
| Capacity | 50 gpm200 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 |
| U.S. Patent # | 6,039,0706,039,070 |
| 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 |
| Model Weight | 1.00 lb0,45 kg |
| Seal kit - Cartridge | Viton: 990-303-006 |
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- Manufacturing Sun Cartridge Cavities
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- Sun Model Code Explanation; 999-901-334
- Cartridges: Materials of Construction
- Fluid and Temperature Recommendations
- Performance Data
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
- Cavity Information (S-171) and Tooling
Notes:
- Patents: US#6,039,070; Germany EP 1 001 197; Japan #3,119,230
