SUN HYDRAULICS
CNICXDN

$175.62 USD

SUN HYDRAULICS
Material:CNICXDN
Model:CNIC-XDN
Summary:Cartridge

Quantity in stock: 0

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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 CNICXDN (CNICXDN) is a specialized hydraulic flow control valve designed for precise fluid management in hydraulic systems. This valve operates as a fixed orifice, non-pressure compensated flow control device with an integrated reverse flow check function. The orifice diameter of the valve is customizable based on user specifications and is permanently set at the factory to ensure consistent performance across various applications. Constructed to fit into a T18A cavity and belonging to the Series 4, the CNICXDN can handle a substantial fluid capacity of up to 120 gpm (480 L/min) and withstands maximum operating pressures up to 5000 psi (350 bar). The selectable orifice range spans from 0.016 to 0.218 inches (0.4 to 5.5 mm), which allows for versatile application across different hydraulic setups. Key features include its compatibility with all standard 2-port flow control cartridges, ensuring easy interchangeability without modifications to existing systems. The design incorporates Sun's floating style construction which minimizes internal parts binding\u2014a common issue caused by excessive installation torque or variations in cavity/cartridge machining. Additional technical specifications highlight the valve\u2019s hex size at 1 5/8 inches (41.3 mm) and an installation torque requirement between 350 and 375 lbf\u00b7ft (474 - 508 Nm). For maintenance and longevity, it utilizes a Viton seal kit (part number: 990018006), ensuring resilience against various operational environments and fluid types. Overall, the CNICXDN valve serves as a reliable component for managing hydraulic flow precisely where consistency and durability are paramount, making it ideal for applications requiring fixed-flow settings with backflow prevention capabilities.

Description

This valve is a fixed orifice, non-pressure compensated flow control with a reverse flow check. The flow setting is specified by the user and is set at the factory.

Customer must specify the orifice diameter.
All 2-port flow control cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size). However, cartridge extension dimensions from the mounting surface may vary.
These are essentially check valves with bypass orifices. The flow path matches Sun's flow controls and can be used in any flow control manifolds. Valves with the opposite direction of flow can be found under check valves with bypass orifices.
Because these valves are non-compensating devices, the fixed orifice size will regulate flow through the valve in proportion to the square root of the pressure differential across ports 1 and 2.
The customer specified orifice diameter is stamped on one of the cartridge's hex faces.
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-18A
Series	4
Capacity	120 gpm480 L/min.
Maximum Operating Pressure	5000 psi350 bar
Orifice Range	.016 - .218 in.0,4 - 5,5 mm
Valve Hex Size	1 5/8 in.41,3 mm
Valve Installation Torque	350 - 375 lbf ft474 - 508 Nm
Seal kit - Cartridge	Viton: 990-018-006

Show FAQ

What happens if I block the control flow (priority) port?	All flow is blocked, hence the term priority. The priority flow has to be satisfied.
What happens if I block the bypass port on a priority flow control?	The valve acts as a 2 port restrictive flow control.
What is the compensating pressure of Sun's flow controls?	The spring force in our flow controls equates to about 100 psi (7 bar). This is high enough to give the valves acceptable capacity (not really) and not too high for proper circuit operation. 100 psi (7 bar) is the spring force; at the upper end of the flow control's range, the drop through the valve will be as high as 250 psi (17 bar) before it starts modulating.
How big is a drop of hydraulic oil?	There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
What is the pressure drop through a flow control?	In a meter-in flow control circuit if the pump is set at 3000 psi and the load is 2000 psi the drop through the flow control is 1000 psi. In a meter-out circuit with the load at 2000 psi the drop through the flow control is 2000 psi.
How accurate are Sun's flow controls?	We claim +/- 10%. We set to +/- 5% in production testing to allow for differences in customers' conditions. If you want accuracy, stay in the bottom 2/3rds of the range. Our 12 gpm (45 L/min.) flow controls are quite flat at 9 gpm (34 L/min.) and dead flat below 6 gpm (23 L/min.), until you get to the bottom of the range. Below about .25 gpm (1 L/min.), spool leakage and orifice conditions start to limit accuracy.
I have a heat problem, will Sun's priority flow control help?	I am afraid not. Unless you are overflowing your current valve and correctly size ours, you are not likely to notice any improvement. Priority flow controls are not efficient devices. They are an easy way to get more than 1 source of oil from 1 pump but they can generate a lot of heat. Try to size your actuators so the pressures are similar on both the priority and the bypass circuits. If you can't do that, try to have the lower flow leg be the lower pressure. The pump pressure is determined by whichever leg is higher and if there is flow that is taking a pressure drop that is not doing work it is creating heat.

SUN HYDRAULICSCNICXDN

SUN HYDRAULICS
CNICXDN