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SUN HYDRAULICS
COJBXAN


$303.00 USD
  • SUN HYDRAULICS
  • Material:COJBXAN
  • Model:COJB-XAN
  • Summary:Cartridge

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***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 COJBXAN (COJBXAN) is a meticulously engineered hydraulic valve designed for specific applications where control over fluid flow direction and pressure is crucial. This spring-biased closed, pilot-to-close check cartridge valve facilitates flow from port 1 to port 2 while effectively blocking any reverse flow. It operates with a nominal pilot ratio of 1.8:1, meaning that it requires a proportionally lower pressure at the pilot port to close against higher pressure at port 1, up to a maximum operating pressure of 5000 psi (350 bar). One of the key features of this model is its ability to maintain closure with equal pressures at all ports, ensuring reliable operation under varied pressure conditions. The valve's design incorporates Sun\u2019s floating style construction which minimizes potential internal parts binding that could result from excessive installation torque or cavity/cartridge machining variations. The COJBXAN is optimized for use in regeneration circuits, commonly found in hydraulic systems requiring precise control over the recycling and rerouting of fluids. It has a maximum capacity of 160 gpm (610 L/min), and its robust construction includes Viton seals for enhanced performance durability under diverse operating conditions. With an installation torque requirement between 350 \u2013 375 lbf\u00b7ft (474 \u2013 508 Nm) and a hex size of 1-5/8 inches (41.3 mm), it ensures ease of installation while maintaining a compact and efficient footprint in system assemblies. This model also boasts minimal leakage rates, ensuring efficient system performance with maximum valve leakage specified at merely one drop per minute (0.07 cc/min). The COJBXAN weighs approximately 2.60 lbs (1.20 kg), making it both sturdy and manageable within various industrial applications without compromising on reliability or efficiency.

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-19A
Series 4
Capacity 160 gpm610 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 5/8 in.41,3 mm
Valve Installation Torque 350 - 375 lbf ft474 - 508 Nm
Model Weight 2.60 lb1,20 kg
Seal kit - Cartridge Viton: 990-019-006

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