SUN HYDRAULICS
CNECXFN

$47.90 USD

Tags:

SUN HYDRAULICS
Material:CNECXFN
Model:CNEC-XFN
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 CNECXFN (CNECXFN) is a specialized hydraulic valve designed for precise fluid control in hydraulic systems. This fixed orifice, non-pressure compensated flow control valve includes a reverse flow check feature, ensuring versatility in application by allowing flow in one direction while blocking it in the reverse. The valve's performance is determined by an orifice diameter that customers must specify upon ordering, which is then factory-set to ensure accuracy. This customization allows the valve to meet specific system requirements effectively. With a capacity of up to 30 gpm (120 L/min) and a maximum operating pressure of 5000 psi (350 bar), the CNECXFN can handle demanding applications. It features an orifice range from 0.016 to 0.135 inches (0.4 to 3.4 mm), making it adaptable for various flow rates and pressures. The physical dimensions include a hex size of 1 1/8 inches (28.6 mm) and an installation torque requirement between 45 and 50 lbf\u00b7ft (61 - 68 Nm). Sun Hydraulics has engineered this valve with their floating style construction which minimizes potential internal binding caused by excessive installation torque or variations in cavity/cartridge machining\u2014enhancing reliability and performance longevity. This model fits within any T5A cavity and is part of Sun's Series 2 lineup, ensuring compatibility with similar frame-sized cartridges across different setups without functional compromise, although cartridge extension dimensions from the mounting surface may vary slightly. The CNECXFN's design incorporates both modern hydraulic engineering principles and user-specific adaptability, making it an essential component for systems requiring reliable flow control with check functionality.

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-5A
Series	2
Capacity	30 gpm120 L/min.
Maximum Operating Pressure	5000 psi350 bar
Orifice Range	.016 - .135 in.0,4 - 3,4 mm
Valve Hex Size	1 1/8 in.28,6 mm
Valve Installation Torque	45 - 50 lbf ft61 - 68 Nm
Seal kit - Cartridge	Viton: 990-203-006

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 HYDRAULICSCNECXFN

SUN HYDRAULICS
CNECXFN