SUN HYDRAULICS
COFAXAV
$79.32 USD
- SUN HYDRAULICS
- Material:COFAXAV
- Model:COFA-XAV
- 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 COFAXAV (COFAXAV) is a spring-biased closed, pilot-to-close check cartridge valve designed for high-performance hydraulic systems. This valve features a nominal pilot ratio of 1.8:1, meaning it requires a lower pilot pressure to close against higher pressures at port 1, enhancing its efficiency in various applications, particularly in regeneration circuits. It allows fluid flow from port 1 to port 2 while blocking any reverse flow from port 2 to port 1 under all conditions, ensuring operational reliability and safety. The COFAXAV operates with a maximum pressure of 5000 psi (350 bar) and can handle flows up to 40 gpm (160 L/min). The valve is equipped with EPDM seals suitable for systems using phosphate ester fluids; however, these seals must avoid exposure to petroleum-based fluids to prevent damage. This cartridge valve also incorporates Sun\u2019s floating style construction which minimizes the risks of internal parts binding due to excessive installation torque or cavity/cartridge machining variations. With a hex size of 1-1/8 inches (28.6 mm) and an installation torque range of 45-50 lbf-ft (61-68 Nm), the COFAXAV ensures ease of installation and maintenance. The model weighs approximately 0.50 lb (0.25 kg), making it compact yet robust enough for demanding applications. Its design also includes features that prevent any leakage more than one drop per minute at a fluid viscosity of 110 SUS (24 cSt), highlighting its efficiency and reliability in maintaining hydraulic integrity.
The Sun Hydraulics COFAXAV (COFAXAV) is a spring-biased closed, pilot-to-close check cartridge valve designed for high-performance hydraulic systems. This valve features a nominal pilot ratio of 1.8:1, meaning it requires a lower pilot pressure to close against higher pressures at port 1, enhancing its efficiency in various applications, particularly in regeneration circuits. It allows fluid flow from port 1 to port 2 while blocking any reverse flow from port 2 to port 1 under all conditions, ensuring operational reliability and safety. The COFAXAV operates with a maximum pressure of 5000 psi (350 bar) and can handle flows up to 40 gpm (160 L/min). The valve is equipped with EPDM seals suitable for systems using phosphate ester fluids; however, these seals must avoid exposure to petroleum-based fluids to prevent damage. This cartridge valve also incorporates Sun\u2019s floating style construction which minimizes the risks of internal parts binding due to excessive installation torque or cavity/cartridge machining variations. With a hex size of 1-1/8 inches (28.6 mm) and an installation torque range of 45-50 lbf-ft (61-68 Nm), the COFAXAV ensures ease of installation and maintenance. The model weighs approximately 0.50 lb (0.25 kg), making it compact yet robust enough for demanding applications. Its design also includes features that prevent any leakage more than one drop per minute at a fluid viscosity of 110 SUS (24 cSt), highlighting its efficiency and reliability in maintaining hydraulic integrity.
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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