SUN HYDRAULICS
COFALEN
$77.34 USD
- SUN HYDRAULICS
- Material:COFALEN
- Model:COFA-LEN
- 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 COFALEN (COFALEN) is a sophisticated spring-biased closed, pilot-to-close check cartridge valve designed for high-performance hydraulic systems. With a nominal pilot ratio of 1.8:1, it effectively allows flow from port 1 to port 2 while blocking reverse flow under any conditions. This valve is engineered to operate efficiently in regeneration circuits, where precise control of hydraulic flow and pressure is crucial. The COFALEN valve features a maximum operating pressure of 5000 psi (350 bar) and can handle capacities up to 40 gpm (160 L/min). It ensures minimal leakage, with a maximum valve leakage rating at 110 SUS (24 cSt) of only 1 drop/min (0.07 cc/min). The construction includes Sun's floating style design which minimizes the risk of internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. For environments involving corrosive substances, the COFALEN can be configured with EPDM seals suitable for phosphate ester fluids; however, these are susceptible to damage from exposure to petroleum-based fluids. Additionally, corrosion-resistant versions are available and can be identified by model code suffixes AP or LH. Installation specifications include a valve hex size of 1-1/8 inches (28.6 mm) and an installation torque range between 45-50 lbf-ft (61-68 Nm). The model's weight is approximately 0.50 lbs (0.25 kg), ensuring it remains lightweight yet robust enough for demanding applications. This valve's reliability and efficiency make it an essential component in advanced hydraulic systems requiring precise fluid control and high-pressure operation.
The Sun Hydraulics COFALEN (COFALEN) is a sophisticated spring-biased closed, pilot-to-close check cartridge valve designed for high-performance hydraulic systems. With a nominal pilot ratio of 1.8:1, it effectively allows flow from port 1 to port 2 while blocking reverse flow under any conditions. This valve is engineered to operate efficiently in regeneration circuits, where precise control of hydraulic flow and pressure is crucial. The COFALEN valve features a maximum operating pressure of 5000 psi (350 bar) and can handle capacities up to 40 gpm (160 L/min). It ensures minimal leakage, with a maximum valve leakage rating at 110 SUS (24 cSt) of only 1 drop/min (0.07 cc/min). The construction includes Sun's floating style design which minimizes the risk of internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. For environments involving corrosive substances, the COFALEN can be configured with EPDM seals suitable for phosphate ester fluids; however, these are susceptible to damage from exposure to petroleum-based fluids. Additionally, corrosion-resistant versions are available and can be identified by model code suffixes AP or LH. Installation specifications include a valve hex size of 1-1/8 inches (28.6 mm) and an installation torque range between 45-50 lbf-ft (61-68 Nm). The model's weight is approximately 0.50 lbs (0.25 kg), ensuring it remains lightweight yet robust enough for demanding applications. This valve's reliability and efficiency make it an essential component in advanced hydraulic systems requiring precise fluid control and high-pressure operation.
This valve is a spring biased closed, pilot-to-close check cartridge that has a 1.8:1 pilot ratio. The valve allows flow from port 1 to port 2 and blocks reverse flow. Pressure at the pilot port opposes pressure at port 1 at a ratio of 1.8:1. This valve is most often used in regeneration circuits.
- Nominal pilot ratio is 1.8:1. This means that a pressure of 1000 psi (70 bar) at the pilot port will close a valve against a pressure of 1800 psi (125 bar) at port 1. Any decay or loss of pilot pressure could allow the valve to open, even if it is a momentary decay or loss.
- Pressure at the port 2 area directly opposes pilot pressure.
- Reverse flow through the valve from port 2 to port 1 is not possible under any condition.
- With equal pressures at all ports the valve is closed.
- In the begining the CO*A's did not have a positive seal on the pilot pistons and the CO*B's did. Now the CO*A's are positively sealed and the 2 valves are mechanically identical. CO*A's are more readily available and cost less.
- 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.
- Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP or /LH (see CONFIGURATION section). For further details, please see the Materials of Construction page under TECHNICAL RESOURCES.
- 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-2A |
| Series | 2 |
| Capacity | 40 gpm160 L/min. |
| Pilot Ratio | 1.8:11.8:1 |
| Maximum Operating Pressure | 5000 psi350 bar |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 1 drops/min.0,07 cc/min. |
| Valve Hex Size | 1 1/8 in.28,6 mm |
| Valve Installation Torque | 45 - 50 lbf ft61 - 68 Nm |
| Model Weight | .50 lb0,25 kg |
| Seal kit - Cartridge | Viton: 990-202-006 |
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