SUN HYDRAULICS
RELIEF CART
RVIALCN
$477.44 USD
- SUN HYDRAULICS
- Material:RVIALCN
- Model:RVIA-LCN
- 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 RVIALCN (RVIALCN) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to tank port 2 when the pressure at inlet port 1 reaches the preset level, effectively throttling flow to maintain desired pressure levels. It features a vent port 3 that allows remote control by other pilot or two-way valves, enhancing its versatility. The valve is noted for its accuracy, low-pressure rise versus flow characteristics, smooth and quiet operation, and moderate response speed. This relief cartridge is suitable for cross-port relief circuits and can withstand maximum pressure at port 2. However, it should not be used in load-holding applications due to potential spool leakage. The main stage orifice is safeguarded by a 150-micron stainless steel screen to ensure durability and reliability. Users must ensure that the relief valve setting exceeds the pilot valve setting for optimal operation. The RVIALCN model incorporates Sun's floating style construction, which minimizes internal binding risks from excessive installation torque or machining variations. It accommodates systems with phosphate ester fluids when configured with EPDM seals; however, exposure to petroleum-based fluids can damage these seals. Additional specifications include a Series 4 cavity with a capacity of 120 gpm (480 L/min), maximum operating pressure of 5000 psi (350 bar), and control pilot flow between 15-20 in\u00b3/min (0.25-0.33 L/min). The typical response time is approximately 10 ms, with maximum valve leakage at specified conditions being about 5 in\u00b3/min (80 cc/min). Installation requires specific torque settings and adjustments are made via an internal hex screw. The model weighs approximately 3.10 lb (1.40 kg) and uses Viton seal kits for maintenance purposes.
The Sun Hydraulics RVIALCN (RVIALCN) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to tank port 2 when the pressure at inlet port 1 reaches the preset level, effectively throttling flow to maintain desired pressure levels. It features a vent port 3 that allows remote control by other pilot or two-way valves, enhancing its versatility. The valve is noted for its accuracy, low-pressure rise versus flow characteristics, smooth and quiet operation, and moderate response speed. This relief cartridge is suitable for cross-port relief circuits and can withstand maximum pressure at port 2. However, it should not be used in load-holding applications due to potential spool leakage. The main stage orifice is safeguarded by a 150-micron stainless steel screen to ensure durability and reliability. Users must ensure that the relief valve setting exceeds the pilot valve setting for optimal operation. The RVIALCN model incorporates Sun's floating style construction, which minimizes internal binding risks from excessive installation torque or machining variations. It accommodates systems with phosphate ester fluids when configured with EPDM seals; however, exposure to petroleum-based fluids can damage these seals. Additional specifications include a Series 4 cavity with a capacity of 120 gpm (480 L/min), maximum operating pressure of 5000 psi (350 bar), and control pilot flow between 15-20 in\u00b3/min (0.25-0.33 L/min). The typical response time is approximately 10 ms, with maximum valve leakage at specified conditions being about 5 in\u00b3/min (80 cc/min). Installation requires specific torque settings and adjustments are made via an internal hex screw. The model weighs approximately 3.10 lb (1.40 kg) and uses Viton seal kits for maintenance purposes.
Ventable, pilot-operated, balanced piston relief cartridges are normally closed pressure regulating valves. When the pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to regulate the pressure. They provide a vent port (port 3) that connects between the main piston and pilot stage to provide for remote control by other pilot or 2-way valves. These valves are accurate, have low pressure rise vs. flow, they are smooth and quiet, and are moderately fast.
- A remote pilot relief on port 3 (vent) will control the valve below its own setting.
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits. If used in cross port relief circuits, consider spool leakage.
- Main stage orifice is protected by a 150 micron stainless steel screen.
- Relief valve setting must always be higher than pilot valve setting.
- Not suitable for use in load holding applications due to spool leakage.
- 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-19A |
| Series | 4 |
| Capacity | 120 gpm480 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 | 10 ms10 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 5 in³/min.@1000 psi80 cc/min.@70 bar |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 5/8 in.41,3 mm |
| Valve Installation Torque | 350 - 375 lbf ft474 - 508 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 | 3.10 lb1,40 kg |
| Seal kit - Cartridge | Viton: 990-019-006 |
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