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SUN HYDRAULICS
CNFEXBN


$71.88 USD
  • SUN HYDRAULICS
  • Material:CNFEXBN
  • Model:CNFE-XBN
  • 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 CNFEXBN (CNFEXBN) is a high-performance hydraulic valve designed for precise flow control in hydraulic systems. This valve is a spring-biased closed, pilot-to-close check cartridge featuring a bypass orifice, which allows customization based on specific customer requirements. The allowable orifice range is from 0.016 to 0.127 inches (0.4 to 3.2 mm), providing flexibility in application and installation. The CNFEXBN valve is engineered with hardened steel seats that offer superior wear characteristics and high contamination tolerance, ensuring long-lasting performance even under harsh conditions. The nominal pilot ratio of 1.8:1 indicates that the valve can effectively manage differential pressures, where a higher pressure at the pilot port effectively closes the valve against lower pressures at other ports. This model incorporates Sun\u2019s floating style construction which minimizes internal parts binding, a common issue caused by excessive installation torque or variations in cavity/cartridge machining. This feature enhances the reliability and durability of the valve in complex installations. With a flow capacity of up to 40 gpm (160 L/min), this valve is suitable for a wide range of fluid dynamics applications where precise flow regulation is necessary. The T2A cavity and Series 2 designation indicate its compatibility with standard configurations, making it easier for integration into existing systems without extensive modifications. Additionally, the CNFEXBN requires an installation torque between 45 - 50 lbf.ft (61 - 68 Nm) and uses Viton seals (990202006) for enhanced chemical resistance and performance under varying temperature ranges. This makes it an ideal choice for applications requiring robust performance with reliable leak protection and operational integrity.

This valve is a spring biased closed, pilot-to-close check cartridge with a bypass orifice. It incorporates a steel seat and is non-vented. The valve allows flow from port 1 to port 2 and restricts flow from port 2 to port 1. Pressure at the pilot (port 3) opposes pressure at port 1 at a ratio of 1.8:1. Pressure at port 2 directly opposes the pilot pressure. Note: The bypass orifice diameter is specified by the customer. See Technical Data below for the allowable orifice range.

  • Features hardened steel seats for excellent wear characteristics and contamination tolerance.
  • 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.
  • 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-2A
Series 2
Capacity 40 gpm160 L/min.
Pilot Ratio 1.8:11.8:1
Orifice Range .016 - .127 in.0,4 - 3,2 mm
Valve Hex Size 1 1/8 in.28,6 mm
Valve Installation Torque 45 - 50 lbf ft61 - 68 Nm
Seal kit - Cartridge Viton: 990-202-006

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