SUN HYDRAULICS
RPES8DN
$84.49 USD
- SUN HYDRAULICS
- Material:RPES8DN
- Model:RPES-8DN
- 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 RPES8DN (Material Number: RPES8DN) is a normally closed modulating valve designed with an integral pilot control cavity, featuring a balanced poppet design. This valve is engineered to accept any T8A pressure control cartridge, which regulates the pressure by opening the poppet element to the tank port 2 when the inlet port 1 reaches the set pressure. This internal modulation helps prevent issues like cavitation noise and manifold erosion. The valve is suitable for systems using phosphate ester fluids, with EPDM seals that must not be exposed to petroleum-based fluids. Capable of handling maximum pressure at port 2, it can be utilized in cross port relief circuits and remains stable across varying oil temperatures and contamination levels. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring durability and reliability. Additionally, back pressure on tank port 2 directly affects the valve setting at a 1:1 ratio. The RPES8DN model incorporates Sun\u2019s floating style construction to reduce internal binding risks due to installation torque or machining variations. It features a cavity size of T-10A with a capacity of 25 gpm (95 L/min) and operates at a maximum pressure of 5000 psi (350 bar). The response time is typically around 7 milliseconds, with pilot control flow ranging from 10 to 25 in\u00b3/min (0.16 to 0.41 L/min). Installation requires specific torque values for both main stage and pilot control valves, ensuring optimal performance and longevity in demanding applications.
The Sun Hydraulics RPES8DN (Material Number: RPES8DN) is a normally closed modulating valve designed with an integral pilot control cavity, featuring a balanced poppet design. This valve is engineered to accept any T8A pressure control cartridge, which regulates the pressure by opening the poppet element to the tank port 2 when the inlet port 1 reaches the set pressure. This internal modulation helps prevent issues like cavitation noise and manifold erosion. The valve is suitable for systems using phosphate ester fluids, with EPDM seals that must not be exposed to petroleum-based fluids. Capable of handling maximum pressure at port 2, it can be utilized in cross port relief circuits and remains stable across varying oil temperatures and contamination levels. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring durability and reliability. Additionally, back pressure on tank port 2 directly affects the valve setting at a 1:1 ratio. The RPES8DN model incorporates Sun\u2019s floating style construction to reduce internal binding risks due to installation torque or machining variations. It features a cavity size of T-10A with a capacity of 25 gpm (95 L/min) and operates at a maximum pressure of 5000 psi (350 bar). The response time is typically around 7 milliseconds, with pilot control flow ranging from 10 to 25 in\u00b3/min (0.16 to 0.41 L/min). Installation requires specific torque values for both main stage and pilot control valves, ensuring optimal performance and longevity in demanding applications.
This valve is a normally closed modulating element that incorporates an integral pilot control cavity. It is a balanced poppet design. The pilot control cavity will accept any T-8A pressure control cartridge. When the pressure at the inlet (port 1) reaches the pilot control cartridge's setting, the poppet element starts to open to tank (port 2), throttling flow to regulate the pressure. The pilot cartridge's setting determines the difference in pressure between port 1 and 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.
- Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
- 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.
- Main stage orifice is protected by a 150 micron stainless steel screen.
- Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
- NOTE: With the -8 control option, the main stage valve should first be installed to the correct torque value. The T-8A pilot control valve should then be installed into the main stage valve to its required torque value.
- The -8 control option allows the pilot control valve to be incorporated directly into the end of the relief cartridge via the T-8A cavity. These pilot control cartridges are sold separately and include electro-proportional, solenoid, air pilot, and hydraulic pilot operation. See Pilot Control Cartridges.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- 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-10A |
| Series | 1 |
| Capacity | 25 gpm95 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 | 7 ms7 ms |
| Pilot Control Cavity | T-8AT-8A |
| Pilot Control Valve Installation Torque | 20 - 25 lbf ft27 - 33 Nm |
| Pilot Control Valve Hex Size | 7/8 in.22,2 mm |
| Main stage leakage at reseat | 10 drops/min.0,7 cc/min. |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
| Model Weight | .30 lb0,15 kg |
| Seal kit - Cartridge | Viton: 990-310-006 |
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Notes:
- Compound cartridge (pilot and main stage) assembly information is provided for reference only. Cartridges must be ordered separately and assembled at point of use.