SUN HYDRAULICS
COFAXDV
$79.32 USD
- SUN HYDRAULICS
- Material:COFAXDV
- Model:COFA-XDV
- 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 COFAXDV (COFAXDV) is a high-performance, pilot-to-close check cartridge valve designed for use in hydraulic systems. This valve facilitates controlled flow from port 1 to port 2 while effectively blocking reverse flow under any condition, ensuring operational reliability and safety. The COFAXDV operates with a nominal pilot ratio of 1.8:1, which means it requires significantly less pressure at the pilot port to close against higher pressures at port 1, making it highly efficient for applications involving regeneration circuits. The design of the COFAXDV includes Sun's floating style construction that minimizes the risk of internal parts binding due to excessive installation torque or cavity/cartridge machining variations. It is engineered to handle a maximum operating pressure of 5000 psi (350 bar) and has a capacity of up to 40 gpm (160 L/min), suitable for various high-pressure applications. The valve's maximum leakage is exceptionally low at about one drop per minute (0.07 cc/min), contributing to its efficiency and reliability in maintaining system integrity. Additionally, the COFAXDV cartridge can be configured with EPDM seals specifically for systems using phosphate ester fluids, though these seals must not be exposed to petroleum-based fluids which could cause damage. For environments prone to corrosion, cartridges with the AP or LH model code suffix are recommended due to their enhanced corrosion resistance. This valve also features a standard T2A cavity and requires an installation torque between 45 - 50 lbf ft (61 - 68 Nm). Weighing just 0.50 lb (0.25 kg), it combines robust performance with compactness, making it an ideal choice for a wide range of hydraulic applications demanding high reliability and precise fluid control.
The Sun Hydraulics COFAXDV (COFAXDV) is a high-performance, pilot-to-close check cartridge valve designed for use in hydraulic systems. This valve facilitates controlled flow from port 1 to port 2 while effectively blocking reverse flow under any condition, ensuring operational reliability and safety. The COFAXDV operates with a nominal pilot ratio of 1.8:1, which means it requires significantly less pressure at the pilot port to close against higher pressures at port 1, making it highly efficient for applications involving regeneration circuits. The design of the COFAXDV includes Sun's floating style construction that minimizes the risk of internal parts binding due to excessive installation torque or cavity/cartridge machining variations. It is engineered to handle a maximum operating pressure of 5000 psi (350 bar) and has a capacity of up to 40 gpm (160 L/min), suitable for various high-pressure applications. The valve's maximum leakage is exceptionally low at about one drop per minute (0.07 cc/min), contributing to its efficiency and reliability in maintaining system integrity. Additionally, the COFAXDV cartridge can be configured with EPDM seals specifically for systems using phosphate ester fluids, though these seals must not be exposed to petroleum-based fluids which could cause damage. For environments prone to corrosion, cartridges with the AP or LH model code suffix are recommended due to their enhanced corrosion resistance. This valve also features a standard T2A cavity and requires an installation torque between 45 - 50 lbf ft (61 - 68 Nm). Weighing just 0.50 lb (0.25 kg), it combines robust performance with compactness, making it an ideal choice for a wide range of hydraulic applications demanding high reliability and precise fluid control.
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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