SUN HYDRAULICS
COHAEGV
$150.71 USD
- SUN HYDRAULICS
- Material:COHAEGV
- Model:COHA-EGV
- 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 COHAEGV (COHAEGV) is a high-performance spring-biased closed, pilot-to-close check cartridge valve with a precise 1.8:1 pilot ratio. Designed for effective operation in hydraulic systems, it facilitates controlled flow from port 1 to port 2 while reliably blocking reverse flow. The valve's functionality is particularly enhanced by its ability to close against a pressure of 1800 psi at port 1 with only 1000 psi at the pilot port, thanks to its nominal pilot ratio. This feature is critical in applications where maintaining control over fluid direction and pressure is essential. The COHAEGV valve is also known for its robust construction, which includes a corrosion-resistant design suitable for harsh environments, identified by specific model code suffixes like AP or LH. Notably, the valve incorporates Sun's floating style construction that minimizes internal parts binding\u2014a common issue due to excessive installation torque or cavity/cartridge machining variations. With a maximum operating pressure of 5000 psi and a capacity of up to 80 gpm/320 L/min, this valve ensures high performance in demanding applications. It supports minimal leakage at maximum flow conditions, with leakage rates as low as one drop per minute under certain conditions. Installation specifications include a hex size of 1\u00bc inches and an installation torque range between 150 and 160 lbf ft, making it adaptable to various setups without requiring extensive modifications. Ideal for use in regeneration circuits where precise fluid control and reliability are paramount, the COHAEGV offers exceptional durability and performance consistency across a range of hydraulic applications. The inclusion of positively sealed pilot pistons ensures enhanced sealing efficiency compared to earlier models, further solidifying its utility in advanced hydraulic systems.
The Sun Hydraulics COHAEGV (COHAEGV) is a high-performance spring-biased closed, pilot-to-close check cartridge valve with a precise 1.8:1 pilot ratio. Designed for effective operation in hydraulic systems, it facilitates controlled flow from port 1 to port 2 while reliably blocking reverse flow. The valve's functionality is particularly enhanced by its ability to close against a pressure of 1800 psi at port 1 with only 1000 psi at the pilot port, thanks to its nominal pilot ratio. This feature is critical in applications where maintaining control over fluid direction and pressure is essential. The COHAEGV valve is also known for its robust construction, which includes a corrosion-resistant design suitable for harsh environments, identified by specific model code suffixes like AP or LH. Notably, the valve incorporates Sun's floating style construction that minimizes internal parts binding\u2014a common issue due to excessive installation torque or cavity/cartridge machining variations. With a maximum operating pressure of 5000 psi and a capacity of up to 80 gpm/320 L/min, this valve ensures high performance in demanding applications. It supports minimal leakage at maximum flow conditions, with leakage rates as low as one drop per minute under certain conditions. Installation specifications include a hex size of 1\u00bc inches and an installation torque range between 150 and 160 lbf ft, making it adaptable to various setups without requiring extensive modifications. Ideal for use in regeneration circuits where precise fluid control and reliability are paramount, the COHAEGV offers exceptional durability and performance consistency across a range of hydraulic applications. The inclusion of positively sealed pilot pistons ensures enhanced sealing efficiency compared to earlier models, further solidifying its utility in advanced hydraulic systems.
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-17A |
| Series | 3 |
| Capacity | 80 gpm320 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 1/4 in.31,8 mm |
| Valve Installation Torque | 150 - 160 lbf ft203 - 217 Nm |
| Model Weight | 1.80 lb0,80 kg |
| Seal kit - Cartridge | Viton: 990-017-006 |
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