SUN HYDRAULICS
COFALEV
$85.28 USD
- SUN HYDRAULICS
- Material:COFALEV
- Model:COFA-LEV
- 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 COFALEV (COFALEV) is a high-performance, pilot-to-close check cartridge valve designed for precise hydraulic control. This valve operates with a nominal pilot ratio of 1.8:1, ensuring that a pressure of 1000 psi at the pilot port can close the valve against a pressure of 1800 psi at port 1. It is specifically engineered to allow flow from port 1 to port 2 while blocking reverse flow under any condition, making it an ideal solution for regeneration circuits. The COFALEV features Sun's floating style construction which helps minimize the potential for internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. This design enhancement contributes to the valve's robust performance and reliability in demanding applications. The valve is configured with EPDM seals suitable for systems using phosphate ester fluids, though these seals are susceptible to damage from exposure to petroleum-based fluids. With a maximum operating pressure of 5000 psi and a capacity of up to 40 gpm, this valve accommodates substantial hydraulic flows while maintaining tight control over leakage, which does not exceed 1 drop/min under standard conditions. The COFALEV has been updated from earlier models to include positive sealing on the pilot pistons, enhancing its functionality and mechanical equivalence with other models in the series. This cartridge valve also features corrosion-resistant options suitable for use in harsh environments, indicated by model code suffixes AP or LH. Its compact design includes a hex size of 1-1/8 inches and requires an installation torque between 45-50 lbf ft, facilitating easy integration into various hydraulic systems without requiring extensive modifications or special handling during installation.
The Sun Hydraulics COFALEV (COFALEV) is a high-performance, pilot-to-close check cartridge valve designed for precise hydraulic control. This valve operates with a nominal pilot ratio of 1.8:1, ensuring that a pressure of 1000 psi at the pilot port can close the valve against a pressure of 1800 psi at port 1. It is specifically engineered to allow flow from port 1 to port 2 while blocking reverse flow under any condition, making it an ideal solution for regeneration circuits. The COFALEV features Sun's floating style construction which helps minimize the potential for internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. This design enhancement contributes to the valve's robust performance and reliability in demanding applications. The valve is configured with EPDM seals suitable for systems using phosphate ester fluids, though these seals are susceptible to damage from exposure to petroleum-based fluids. With a maximum operating pressure of 5000 psi and a capacity of up to 40 gpm, this valve accommodates substantial hydraulic flows while maintaining tight control over leakage, which does not exceed 1 drop/min under standard conditions. The COFALEV has been updated from earlier models to include positive sealing on the pilot pistons, enhancing its functionality and mechanical equivalence with other models in the series. This cartridge valve also features corrosion-resistant options suitable for use in harsh environments, indicated by model code suffixes AP or LH. Its compact design includes a hex size of 1-1/8 inches and requires an installation torque between 45-50 lbf ft, facilitating easy integration into various hydraulic systems without requiring extensive modifications or special handling during installation.
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 |
Show FAQ