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SUN HYDRAULICS
CODBLBN


$65.42 USD
  • SUN HYDRAULICS
  • Material:CODBLBN
  • Model:CODB-LBN
  • 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 CODBLBN (CODBLBN) is a meticulously engineered spring-biased closed, pilot-to-close check cartridge valve, designed to facilitate flow from port 1 to port 2 while blocking reverse flow. This valve is particularly effective in regeneration circuits due to its 1.8:1 nominal pilot ratio. At this ratio, a pressure of 1000 psi at the pilot port can close the valve against a pressure of 1800 psi at port 1. The design ensures that any decay or loss of pilot pressure could momentarily open the valve, underscoring the need for consistent pressure for optimal operation. The CODBLBN model boasts a maximum operating pressure of 5000 psi and can handle up to 20 gpm of fluid capacity. It features a robust construction that minimizes internal parts binding, which can often result from excessive installation torque or variations in cavity/cartridge machining. This durability is enhanced by Sun's floating style construction technique. Furthermore, the valve incorporates several design enhancements over previous models, including a positive seal on the pilot pistons which was absent in earlier versions. This model also offers minimal leakage with maximum leakage parameters set at about one drop per minute. With its compact size and light weight (approximately 0.30 lb), this model is easy to install with an installation torque range of 30-35 lbf ft. The valve\u2019s dimensions and hex size are specifically tailored to ensure ease of integration into various hydraulic systems without requiring extensive modifications. This Sun Hydraulics check cartridge represents a reliable choice for high-pressure applications where reverse flow prevention is crucial and where system integrity depends on precise pressure management across different ports.

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-11A
Series 1
Capacity 20 gpm80 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 7/8 in.22,2 mm
Valve Installation Torque 30 - 35 lbf ft41 - 47 Nm
Model Weight .30 lb0,15 kg
Seal kit - Cartridge Viton: 990-011-006

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