SUN HYDRAULICS
COJAXDN
$280.86 USD
- SUN HYDRAULICS
- Material:COJAXDN
- Model:COJA-XDN
- 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 COJAXDN (COJAXDN) is a high-performance, pilot-to-close check cartridge valve engineered for precise hydraulic flow control. This valve features a nominal pilot ratio of 1.8:1, allowing it to effectively manage fluid dynamics by enabling flow from port 1 to port 2 while blocking reverse flow under any condition. The valve's operation is influenced by the pressure at the pilot port, which opposes the pressure at port 1 with a ratio of 1.8:1, meaning that a pilot pressure of 1000 psi can close the valve against a pressure of 1800 psi at port 1. Designed primarily for use in regeneration circuits, the COJAXDN ensures reliability and performance with its corrosion-resistant construction, suitable for harsh environments. The valve incorporates Sun's floating style construction which minimizes internal parts binding due to excessive installation torque or cavity/cartridge machining variations, enhancing its operational longevity and stability. Key specifications include a maximum operating pressure of 5000 psi and a capacity of up to 160 gpm. It features minimal leakage with maximum valve leakage specified at only one drop per minute. Installation requires specific torque settings between 350 and 375 lbf ft to ensure optimal performance without damage. The COJAXDN model weighs approximately 2.60 lb and utilizes Viton seals for enhanced durability against various fluids and temperatures. This model's robust design and precise control capabilities make it an essential component in advanced hydraulic systems requiring reliable check functionalities under varying pressures and conditions.
The Sun Hydraulics COJAXDN (COJAXDN) is a high-performance, pilot-to-close check cartridge valve engineered for precise hydraulic flow control. This valve features a nominal pilot ratio of 1.8:1, allowing it to effectively manage fluid dynamics by enabling flow from port 1 to port 2 while blocking reverse flow under any condition. The valve's operation is influenced by the pressure at the pilot port, which opposes the pressure at port 1 with a ratio of 1.8:1, meaning that a pilot pressure of 1000 psi can close the valve against a pressure of 1800 psi at port 1. Designed primarily for use in regeneration circuits, the COJAXDN ensures reliability and performance with its corrosion-resistant construction, suitable for harsh environments. The valve incorporates Sun's floating style construction which minimizes internal parts binding due to excessive installation torque or cavity/cartridge machining variations, enhancing its operational longevity and stability. Key specifications include a maximum operating pressure of 5000 psi and a capacity of up to 160 gpm. It features minimal leakage with maximum valve leakage specified at only one drop per minute. Installation requires specific torque settings between 350 and 375 lbf ft to ensure optimal performance without damage. The COJAXDN model weighs approximately 2.60 lb and utilizes Viton seals for enhanced durability against various fluids and temperatures. This model's robust design and precise control capabilities make it an essential component in advanced hydraulic systems requiring reliable check functionalities under varying pressures and conditions.
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.
- 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-19A |
| Series | 4 |
| Capacity | 160 gpm610 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 5/8 in.41,3 mm |
| Valve Installation Torque | 350 - 375 lbf ft474 - 508 Nm |
| Model Weight | 2.60 lb1,20 kg |
| Seal kit - Cartridge | Viton: 990-019-006 |
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