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SUN HYDRAULICS
COJCXDN


$310.85 USD
  • SUN HYDRAULICS
  • Material:COJCXDN
  • Model:COJC-XDN
  • 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 COJCXDN (COJCXDN) is a high-performance, pilot-to-close check cartridge valve designed for hydraulic systems requiring reliable, directional flow control. This valve features a nominal pilot ratio of 1.8:1, meaning it can close against a pressure of 1800 psi at port 1 with only 1000 psi at the pilot port. The COJCXDN allows fluid flow from port 1 to port 2 while preventing any reverse flow from port 2 to port 1 under all conditions. Constructed with Sun's floating style design, the COJCXDN minimizes the risk of internal parts binding which could result from excessive installation torque or variations in cavity/cartridge machining. This feature ensures consistent and dependable operation even in demanding applications. The valve is designed for use in cavity T19A and belongs to Series 4, supporting a maximum flow capacity of up to 160 gpm (610 L/min) and can handle a maximum operating pressure of up to 5000 psi (350 bar). The valve's leakage specification is notably efficient, with a maximum rate of only one drop per minute at an oil viscosity of 110 SUS (24 cSt). For installation, the valve requires a hex size of 1-5/8 inches (41.3 mm) and an installation torque between 350 -375 lbf\u00b7ft (474 -508 Nm). Weighing at approximately 2.60 lbs (1.20 kg), this model is robust yet manageable for system integration. Additionally, it uses Viton seals for enhanced performance under varying operational conditions.

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 external pilot port opposes pressure at port 1 at a ratio of 1.8:1. Port 3 is blocked.

  • 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.
  • 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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