SUN HYDRAULICS
COHAEZV
$151.80 USD
Tags:
- SUN HYDRAULICS
- Material:COHAEZV
- Model:COHA-EZV
- 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 COHAEZV (COHAEZV) is a high-performance, spring-biased closed, pilot-to-close check cartridge valve with a 1.8:1 pilot ratio. Designed to allow flow from port 1 to port 2 while blocking reverse flow, this valve is primarily utilized in regeneration circuits. It operates under the principle that pressure at the pilot port can close the valve against higher pressures at port 1, with a nominal pilot ratio of 1.8:1 meaning that a pressure of 1000 psi at the pilot port can close against a pressure of 1800 psi at port 1. This model is equipped to handle maximum operating pressures up to 5000 psi and can manage flows up to 80 gpm. It features minimal internal parts binding due to its Sun floating style construction, which accommodates excessive installation torque and variations in cavity/cartridge machining. The valve ensures reliability with extremely low leakage rates noted at approximately one drop per minute. The COHAEZV is mechanically identical to earlier models following improvements in sealing on the pilot pistons, ensuring enhanced performance and dependability. It is also designed for ease of installation with a specified hex size of 1-1/4 inches and an installation torque range between 150 -160 lbf ft. Weighing approximately 1.80 lbs, it is robust yet compact enough for versatile applications in demanding environments where corrosion resistance and operational integrity are paramount.
The Sun Hydraulics COHAEZV (COHAEZV) is a high-performance, spring-biased closed, pilot-to-close check cartridge valve with a 1.8:1 pilot ratio. Designed to allow flow from port 1 to port 2 while blocking reverse flow, this valve is primarily utilized in regeneration circuits. It operates under the principle that pressure at the pilot port can close the valve against higher pressures at port 1, with a nominal pilot ratio of 1.8:1 meaning that a pressure of 1000 psi at the pilot port can close against a pressure of 1800 psi at port 1. This model is equipped to handle maximum operating pressures up to 5000 psi and can manage flows up to 80 gpm. It features minimal internal parts binding due to its Sun floating style construction, which accommodates excessive installation torque and variations in cavity/cartridge machining. The valve ensures reliability with extremely low leakage rates noted at approximately one drop per minute. The COHAEZV is mechanically identical to earlier models following improvements in sealing on the pilot pistons, ensuring enhanced performance and dependability. It is also designed for ease of installation with a specified hex size of 1-1/4 inches and an installation torque range between 150 -160 lbf ft. Weighing approximately 1.80 lbs, it is robust yet compact enough for versatile applications in demanding environments where corrosion resistance and operational integrity are paramount.
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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