SUN HYDRAULICS
RELIEF
RPKS8BV
$451.60 USD
Tags:
- SUN HYDRAULICS
- Material:RPKS8BV
- Model:RPKS-8BV
- 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 RPKS8BV (RPKS8BV) is a normally closed modulating valve designed with an integral pilot control cavity, featuring a balanced poppet design. This valve is capable of accepting any T8A pressure control cartridge, allowing it to regulate pressure by opening the poppet element to the tank port when the inlet port reaches the pilot control cartridge's setting. The difference in pressure between port 1 and port 2 is determined by this setting. Notably, the modulating action within the cartridge makes these valves resistant to cavitation-related issues such as noise and manifold erosion. They are interchangeable with other 2-port relief cartridges for a given frame size and can handle maximum pressure at port 2, making them suitable for cross port relief circuits. The valve is engineered to be relatively insensitive to changes in oil temperature and contamination, with its main stage orifice protected by a 150-micron stainless steel screen. Back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. The RPKS8BV allows for direct incorporation of the pilot control valve into the relief cartridge via the T8A cavity, with options for electroproportional, solenoid, air pilot, and hydraulic pilot operation available separately. It employs Sun's floating style construction to minimize potential binding due to excessive torque or machining variations. With a capacity of 200 gpm (760 L/min) and maximum operating pressure of 5000 psi (350 bar), it provides reliable performance even under demanding conditions. The valve has a response time typically around 2 ms and requires specific installation torques for both main stage and pilot control valves to ensure optimal functionality.
The Sun Hydraulics RPKS8BV (RPKS8BV) is a normally closed modulating valve designed with an integral pilot control cavity, featuring a balanced poppet design. This valve is capable of accepting any T8A pressure control cartridge, allowing it to regulate pressure by opening the poppet element to the tank port when the inlet port reaches the pilot control cartridge's setting. The difference in pressure between port 1 and port 2 is determined by this setting. Notably, the modulating action within the cartridge makes these valves resistant to cavitation-related issues such as noise and manifold erosion. They are interchangeable with other 2-port relief cartridges for a given frame size and can handle maximum pressure at port 2, making them suitable for cross port relief circuits. The valve is engineered to be relatively insensitive to changes in oil temperature and contamination, with its main stage orifice protected by a 150-micron stainless steel screen. Back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. The RPKS8BV allows for direct incorporation of the pilot control valve into the relief cartridge via the T8A cavity, with options for electroproportional, solenoid, air pilot, and hydraulic pilot operation available separately. It employs Sun's floating style construction to minimize potential binding due to excessive torque or machining variations. With a capacity of 200 gpm (760 L/min) and maximum operating pressure of 5000 psi (350 bar), it provides reliable performance even under demanding conditions. The valve has a response time typically around 2 ms and requires specific installation torques for both main stage and pilot control valves to ensure optimal functionality.
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.
- 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.
- 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.
- 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-18A |
| Series | 4 |
| Capacity | 200 gpm760 L/min. |
| Factory Pressure Settings Established at | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Control Pilot Flow | 15 - 20 in³/min.0,25 - 0,33 L/min. |
| Response Time - Typical | 2 ms2 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 | 1 5/8 in.41,3 mm |
| Valve Installation Torque | 350 - 375 lbf ft474 - 508 Nm |
| Model Weight | 2.50 lb1,15 kg |
| Seal kit - Cartridge | Viton: 990-318-006 |
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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.