SUN HYDRAULICS
COFOXDV
$137.31 USD
- SUN HYDRAULICS
- Material:COFOXDV
- Model:COFO-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 COFOXDV (COFOXDV) is a pilot-to-close check cartridge valve with a high pilot ratio of 120:1, designed for efficient accumulator discharge control in hydraulic systems. This valve automatically discharges the accumulator when the pump is turned off, ensuring system safety and preventing pressure build-up. It operates by maintaining an open connection between the accumulator port and the tank port when there is no pressure at the pump port. A minimum of 60 psi at the pump port is required to close the valve against accumulator pressures up to 5000 psi. The COFOXDV features a poppet design which minimizes leakage of stored fluid, ensuring that leakage only occurs when pump pressure falls below 300 psi. This design includes hardened steel seats that enhance wear characteristics and contamination tolerance, contributing to the valve's durability and reliability in various operating conditions. The construction of the valve utilizes Sun's floating style to reduce risks associated with internal parts binding due to installation torque or machining variations. Key specifications include a maximum operating pressure of 5000 psi, a leakage rate at maximum pressure limited to 5 drops per minute, and an installation torque requirement between 45 to 50 lbf ft. The valve is compatible with Viton seals for enhanced performance under varying temperatures and chemical exposures. This model is particularly suitable for applications requiring precise control over high-pressure accumulations in hydraulic systems, offering both robust performance and reliability in maintaining system stability and safety.
The Sun Hydraulics COFOXDV (COFOXDV) is a pilot-to-close check cartridge valve with a high pilot ratio of 120:1, designed for efficient accumulator discharge control in hydraulic systems. This valve automatically discharges the accumulator when the pump is turned off, ensuring system safety and preventing pressure build-up. It operates by maintaining an open connection between the accumulator port and the tank port when there is no pressure at the pump port. A minimum of 60 psi at the pump port is required to close the valve against accumulator pressures up to 5000 psi. The COFOXDV features a poppet design which minimizes leakage of stored fluid, ensuring that leakage only occurs when pump pressure falls below 300 psi. This design includes hardened steel seats that enhance wear characteristics and contamination tolerance, contributing to the valve's durability and reliability in various operating conditions. The construction of the valve utilizes Sun's floating style to reduce risks associated with internal parts binding due to installation torque or machining variations. Key specifications include a maximum operating pressure of 5000 psi, a leakage rate at maximum pressure limited to 5 drops per minute, and an installation torque requirement between 45 to 50 lbf ft. The valve is compatible with Viton seals for enhanced performance under varying temperatures and chemical exposures. This model is particularly suitable for applications requiring precise control over high-pressure accumulations in hydraulic systems, offering both robust performance and reliability in maintaining system stability and safety.
This valve is a pilot-to-close check cartridge that has a 120:1 pilot ratio. The valve is designed specifically to discharge an accumulator when the pump is turned off. With no pressure at the pump port (port 3), the valve is open between the accumulator (port 1) and tank (port 2). 60 psi (4 bar) at port 3 will close the valve for accumulator pressures up to 5000 psi (350 bar). When pump pressure at port 3 is below 300 psi (20 bar) there is a leak path from port 3 to tank (port 2) to ensure accumulator discharge when the pump is turned off. When pump pressure is above 300 psi (20 bar) the leak path closes for efficiency.
- Features hardened steel seats for excellent wear characteristics and contamination tolerance.
- Note: The discharge of the accumulator is across an .05 inch (1,27 mm) diameter orifice. The discharge time for large accumulators with low pre-charge pressures may be too long. In this case there are 2-valve circuits that greatly increase the capacity. See the Tech Tips (FAQs).
- The valve is a poppet design that results in very low leakage of stored fluid from the accumulator.
- Leakage of the pump signal only occurs when the pump is unloaded to below 300 psi (20 bar).
- 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 | .05 in.1,27 mm |
| Maximum Operating Pressure | 5000 psi350 bar |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 5 drops/min.0,3 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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