SUN HYDRAULICS
COFALJV
$87.27 USD
- SUN HYDRAULICS
- Material:COFALJV
- Model:COFA-LJV
- 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 COFALJV (COFALJV) is a high-performance, pilot-to-close check cartridge valve designed for advanced hydraulic system applications. This valve facilitates controlled flow from port 1 to port 2 while effectively blocking any reverse flow from port 2 back to port 1, ensuring operational reliability and safety. The COFALJV operates with a nominal pilot ratio of 1.8:1, which means that it requires a significantly lower pressure at the pilot port to close against higher pressure at port 1, providing efficient control over fluid handling in high-pressure environments. Specifically constructed for use in regeneration circuits, the COFALJV valve features a maximum operating pressure capacity of up to 5000 psi (350 bar) and can handle flow rates up to 40 gpm (160 L/min). It is engineered with Sun Hydraulics' floating style construction which minimizes internal parts binding that could occur due to variations in installation torque or cavity/cartridge machining discrepancies. The valve is also equipped with EPDM seals suitable for systems using phosphate ester fluids; however, these seals are vulnerable to damage if exposed to petroleum-based fluids. For environments prone to corrosion, variants of this model include corrosion-resistant configurations denoted by model code suffixes AP or LH. The robust design ensures minimal leakage (less than one drop per minute at 110 SUS / 24 cSt), and the compact size includes a hex size of 1-1/8 inches (28.6 mm) and weighs just .50 lb (0.25 kg). Installation torque requirements range from 45 \u2013 50 lbf ft (61 \u2013 68 Nm), facilitating ease of installation while maintaining performance integrity across various hydraulic applications.
The Sun Hydraulics COFALJV (COFALJV) is a high-performance, pilot-to-close check cartridge valve designed for advanced hydraulic system applications. This valve facilitates controlled flow from port 1 to port 2 while effectively blocking any reverse flow from port 2 back to port 1, ensuring operational reliability and safety. The COFALJV operates with a nominal pilot ratio of 1.8:1, which means that it requires a significantly lower pressure at the pilot port to close against higher pressure at port 1, providing efficient control over fluid handling in high-pressure environments. Specifically constructed for use in regeneration circuits, the COFALJV valve features a maximum operating pressure capacity of up to 5000 psi (350 bar) and can handle flow rates up to 40 gpm (160 L/min). It is engineered with Sun Hydraulics' floating style construction which minimizes internal parts binding that could occur due to variations in installation torque or cavity/cartridge machining discrepancies. The valve is also equipped with EPDM seals suitable for systems using phosphate ester fluids; however, these seals are vulnerable to damage if exposed to petroleum-based fluids. For environments prone to corrosion, variants of this model include corrosion-resistant configurations denoted by model code suffixes AP or LH. The robust design ensures minimal leakage (less than one drop per minute at 110 SUS / 24 cSt), and the compact size includes a hex size of 1-1/8 inches (28.6 mm) and weighs just .50 lb (0.25 kg). Installation torque requirements range from 45 \u2013 50 lbf ft (61 \u2013 68 Nm), facilitating ease of installation while maintaining performance integrity across various hydraulic applications.
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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