SUN HYDRAULICS
COFBXFN
$85.58 USD
- SUN HYDRAULICS
- Material:COFBXFN
- Model:COFB-XFN
- 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 COFBXFN (COFBXFN) is a high-performance, pilot-to-close check cartridge valve designed for hydraulic applications requiring controlled flow and prevention of reverse flow. This valve operates by allowing fluid to pass from port 1 to port 2 while blocking any reverse flow from port 2 back to port 1. It features a nominal pilot ratio of 1.8:1, meaning that a pressure at the pilot port can effectively close the valve against higher pressures at port 1, maintaining robust control even under varying pressure conditions. Specifically engineered for use in regeneration circuits, the COFBXFN ensures reliable operation with its spring-biased closed mechanism which reacts to pressure changes swiftly. The maximum operating pressure for this valve reaches up to 5000 psi (350 bar), and it can handle a flow capacity up to 40 gpm (160 L/min), making it suitable for heavy-duty applications. Additionally, the valve incorporates Sun's floating style construction which minimizes the risk of internal parts binding\u2014a common issue arising from excessive installation torque or variations in cavity/cartridge machining. The valve's construction also includes a positive seal on the pilot pistons, ensuring no leakage and consistent performance. The maximum leakage rate is exceptionally low at about one drop per minute (0.07 cc/min), highlighting its efficiency and reliability in maintaining system integrity. Installation specifications include a hex size of 1-1/8 inches (28.6 mm) and an installation torque range between 45 and 50 lbf-ft (61 - 68 Nm), facilitating easy integration into various setups without requiring extensive modifications. Overall, the Sun Hydraulics COFBXFN check cartridge valve stands out with its robust design, precise control capabilities, and high reliability, suited particularly for applications demanding rigorous flow control and prevention of fluid backflow.
The Sun Hydraulics COFBXFN (COFBXFN) is a high-performance, pilot-to-close check cartridge valve designed for hydraulic applications requiring controlled flow and prevention of reverse flow. This valve operates by allowing fluid to pass from port 1 to port 2 while blocking any reverse flow from port 2 back to port 1. It features a nominal pilot ratio of 1.8:1, meaning that a pressure at the pilot port can effectively close the valve against higher pressures at port 1, maintaining robust control even under varying pressure conditions. Specifically engineered for use in regeneration circuits, the COFBXFN ensures reliable operation with its spring-biased closed mechanism which reacts to pressure changes swiftly. The maximum operating pressure for this valve reaches up to 5000 psi (350 bar), and it can handle a flow capacity up to 40 gpm (160 L/min), making it suitable for heavy-duty applications. Additionally, the valve incorporates Sun's floating style construction which minimizes the risk of internal parts binding\u2014a common issue arising from excessive installation torque or variations in cavity/cartridge machining. The valve's construction also includes a positive seal on the pilot pistons, ensuring no leakage and consistent performance. The maximum leakage rate is exceptionally low at about one drop per minute (0.07 cc/min), highlighting its efficiency and reliability in maintaining system integrity. Installation specifications include a hex size of 1-1/8 inches (28.6 mm) and an installation torque range between 45 and 50 lbf-ft (61 - 68 Nm), facilitating easy integration into various setups without requiring extensive modifications. Overall, the Sun Hydraulics COFBXFN check cartridge valve stands out with its robust design, precise control capabilities, and high reliability, suited particularly for applications demanding rigorous flow control and prevention of fluid backflow.
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.
- 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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