SUN HYDRAULICS
COFAXBV
$79.32 USD
- SUN HYDRAULICS
- Material:COFAXBV
- Model:COFA-XBV
- 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 COFAXBV (COFAXBV) is a sophisticated spring-biased closed, pilot-to-close check cartridge valve with a nominal pilot ratio of 1.8:1. This valve facilitates flow from port 1 to port 2 while effectively blocking any reverse flow from port 2 to port 1 under all conditions. It operates by opposing the pressure at port 1 with the pressure at the pilot port at a ratio of 1.8:1, which means that a pressure of 1000 psi at the pilot port can close the valve against a pressure of up to 1800 psi at port 1. This feature is critical in maintaining control in regeneration circuits where such dynamics are crucial. The COFAXBV model incorporates Sun Hydraulics' advanced floating style construction which minimizes the risk of internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. This design enhances reliability and longevity of the valve in operational settings. The cartridge also features corrosion resistance and can be configured with EPDM seals for systems using phosphate ester fluids, though these seals are vulnerable to damage from exposure to petroleum-based fluids. With a maximum operating pressure capability of up to 5000 psi and a capacity of up to 40 gpm, this valve is equipped for high-demand applications while maintaining tight control over leakage\u2014limited to just about one drop per minute. Its robust construction includes a hex size for installation measuring at 1-1/8 inches and requires an installation torque between 45 and 50 lbf ft. The model's weight stands at approximately .50 lb, making it compact yet durable for various hydraulic systems configurations.
The Sun Hydraulics COFAXBV (COFAXBV) is a sophisticated spring-biased closed, pilot-to-close check cartridge valve with a nominal pilot ratio of 1.8:1. This valve facilitates flow from port 1 to port 2 while effectively blocking any reverse flow from port 2 to port 1 under all conditions. It operates by opposing the pressure at port 1 with the pressure at the pilot port at a ratio of 1.8:1, which means that a pressure of 1000 psi at the pilot port can close the valve against a pressure of up to 1800 psi at port 1. This feature is critical in maintaining control in regeneration circuits where such dynamics are crucial. The COFAXBV model incorporates Sun Hydraulics' advanced floating style construction which minimizes the risk of internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. This design enhances reliability and longevity of the valve in operational settings. The cartridge also features corrosion resistance and can be configured with EPDM seals for systems using phosphate ester fluids, though these seals are vulnerable to damage from exposure to petroleum-based fluids. With a maximum operating pressure capability of up to 5000 psi and a capacity of up to 40 gpm, this valve is equipped for high-demand applications while maintaining tight control over leakage\u2014limited to just about one drop per minute. Its robust construction includes a hex size for installation measuring at 1-1/8 inches and requires an installation torque between 45 and 50 lbf ft. The model's weight stands at approximately .50 lb, making it compact yet durable for various hydraulic systems configurations.
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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