SUN HYDRAULICS
RELIEF CART
RVCD8WN
- SUN HYDRAULICS
- Material:RVCD8WN
- Model:RVCD-8WN
- Summary:Cartridge
Due to extremely high demand, please call 888-905-7411 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 RVCD8WN (Material Number: RVCD8WN) is a normally closed modulating valve element designed with an integral pilot control cavity, suitable for use in various hydraulic applications. This valve features a balanced piston design that is ventable and externally drained, allowing it to regulate pressure effectively. It can accommodate any T8A pressure control cartridge, which determines the pressure differential between the inlet port 1 and the drain port 4. With its ability to be controlled remotely via the vent port 3, this valve offers flexibility in operation. The RVCD8WN is particularly suited for cross-port relief circuits as it can accept maximum pressure at port 2. It incorporates a main stage orifice protected by a 150-micron stainless steel screen, ensuring durability and reliability. However, it's important to note that this valve is not suitable for load-holding applications due to spool leakage. The pressure at port 4 can directly affect the valve setting at a 1:1 ratio but should not exceed 5000 psi (350 bar). For installation, when using the \"8\" control option, ensure that the main stage valve is installed to the correct torque before installing the T8A pilot control valve. This option allows direct incorporation of various pilot control cartridges such as electroproportional, solenoid, air pilot, and hydraulic pilot operations into the relief cartridge via the T8A cavity. The RVCD8WN features Sun's floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. It has a capacity of 15 gpm (60 L/min), with a maximum operating pressure of 5000 psi (350 bar), and typical response time of 10 ms. The valve's main stage leakage at standard conditions is approximately 2 in\u00b3/min (30 cc/min). Cartridges with EPDM seals are compatible with phosphate ester fluids but not petroleum-based fluids.
The Sun Hydraulics RVCD8WN (Material Number: RVCD8WN) is a normally closed modulating valve element designed with an integral pilot control cavity, suitable for use in various hydraulic applications. This valve features a balanced piston design that is ventable and externally drained, allowing it to regulate pressure effectively. It can accommodate any T8A pressure control cartridge, which determines the pressure differential between the inlet port 1 and the drain port 4. With its ability to be controlled remotely via the vent port 3, this valve offers flexibility in operation. The RVCD8WN is particularly suited for cross-port relief circuits as it can accept maximum pressure at port 2. It incorporates a main stage orifice protected by a 150-micron stainless steel screen, ensuring durability and reliability. However, it's important to note that this valve is not suitable for load-holding applications due to spool leakage. The pressure at port 4 can directly affect the valve setting at a 1:1 ratio but should not exceed 5000 psi (350 bar). For installation, when using the \"8\" control option, ensure that the main stage valve is installed to the correct torque before installing the T8A pilot control valve. This option allows direct incorporation of various pilot control cartridges such as electroproportional, solenoid, air pilot, and hydraulic pilot operations into the relief cartridge via the T8A cavity. The RVCD8WN features Sun's floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. It has a capacity of 15 gpm (60 L/min), with a maximum operating pressure of 5000 psi (350 bar), and typical response time of 10 ms. The valve's main stage leakage at standard conditions is approximately 2 in\u00b3/min (30 cc/min). Cartridges with EPDM seals are compatible with phosphate ester fluids but not petroleum-based fluids.
This valve is a normally closed modulating element that incorporates an integral pilot control cavity. It is ventable, externally drained, and is a balanced piston 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 setting, the modulating 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 the inlet (port 1) and the drain (port 4). The vent port (port 3) that tees in between the main piston and pilot control cartridge, allows the modulating element to also be controlled by remote pilot or 2-way valves.
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
- Main stage orifice is protected by a 150 micron stainless steel screen.
- Not suitable for use in load holding applications due to spool leakage.
- Pressure at port 4 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
- 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.
- 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.
- 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 | 15 gpm60 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Control Pilot Flow | 7 - 10 in³/min.0,11 - 0,16 L/min. |
| Response Time - Typical | 10 ms10 ms |
| Pilot Control Cavity | T-8AT-8A |
| Main stage leakage at 110 SUS (24 cSt) | 2 in³/min.@1000 psi30 cc/min.@70 bar |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
| Model Weight | .40 lb0,20 kg |
| Seal kit - Cartridge | Viton: 990-021-006 |
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- Fluid and Temperature Recommendations
- Performance Data
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.
