SUN HYDRAULICS
COFBXEV
$91.54 USD
- SUN HYDRAULICS
- Material:COFBXEV
- Model:COFB-XEV
- 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 COFBXEV (COFBXEV) is a sophisticated spring-biased closed, pilot-to-close check cartridge valve designed specifically for hydraulic control systems. This valve ensures fluid flows smoothly from port 1 to port 2 while completely blocking any reverse flow from port 2 to port 1, thereby ensuring system integrity and operational reliability. With a nominal pilot ratio of 1.8:1, the COFBXEV can close against significantly higher pressures at port 1 when appropriately controlled pressure is applied at the pilot port. This feature is particularly beneficial in applications involving regeneration circuits where precise control of flow and pressure is crucial. The valve's design incorporates Sun's floating style construction which minimizes the risk of internal parts binding\u2014a common issue resulting from excessive installation torque or variations in cavity/cartridge machining. This design enhancement enhances the valve\u2019s durability and consistent performance even under varying operational conditions. The maximum operating pressure capability of this model reaches up to 5000 psi (350 bar), and it can handle a flow capacity of up to 40 gpm (160 L/min), making it suitable for high-capacity systems. For maintenance and repair, the valve uses a Viton seal kit (990202006), ensuring reliable sealing and long-term durability against various types of fluids and operational wear. The COFBXEV also boasts minimal leakage rates, maintaining efficiency with a maximum valve leakage specification of only about 0 drops/min (0.07 cc/min). Installation requires a specific torque setting between 45-50 lbf ft (61-68 Nm) to ensure optimal performance without damaging the unit. Overall, the Sun Hydraulics COFBXEV is engineered for high-performance hydraulic systems requiring robust control in preventing reverse flow while facilitating efficient forward flow under controlled pilot pressures.
The Sun Hydraulics COFBXEV (COFBXEV) is a sophisticated spring-biased closed, pilot-to-close check cartridge valve designed specifically for hydraulic control systems. This valve ensures fluid flows smoothly from port 1 to port 2 while completely blocking any reverse flow from port 2 to port 1, thereby ensuring system integrity and operational reliability. With a nominal pilot ratio of 1.8:1, the COFBXEV can close against significantly higher pressures at port 1 when appropriately controlled pressure is applied at the pilot port. This feature is particularly beneficial in applications involving regeneration circuits where precise control of flow and pressure is crucial. The valve's design incorporates Sun's floating style construction which minimizes the risk of internal parts binding\u2014a common issue resulting from excessive installation torque or variations in cavity/cartridge machining. This design enhancement enhances the valve\u2019s durability and consistent performance even under varying operational conditions. The maximum operating pressure capability of this model reaches up to 5000 psi (350 bar), and it can handle a flow capacity of up to 40 gpm (160 L/min), making it suitable for high-capacity systems. For maintenance and repair, the valve uses a Viton seal kit (990202006), ensuring reliable sealing and long-term durability against various types of fluids and operational wear. The COFBXEV also boasts minimal leakage rates, maintaining efficiency with a maximum valve leakage specification of only about 0 drops/min (0.07 cc/min). Installation requires a specific torque setting between 45-50 lbf ft (61-68 Nm) to ensure optimal performance without damaging the unit. Overall, the Sun Hydraulics COFBXEV is engineered for high-performance hydraulic systems requiring robust control in preventing reverse flow while facilitating efficient forward flow under controlled pilot pressures.
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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