SUN HYDRAULICS
CNICXFN

$175.62 USD

SUN HYDRAULICS
Material:CNICXFN
Model:CNIC-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 CNICXFN (CNICXFN) is a precision-engineered hydraulic valve designed for specific flow control applications. This fixed orifice, non-pressure compensated flow control valve includes a reverse flow check feature, making it versatile for various hydraulic circuit implementations. With a user-specified orifice diameter set at the factory, it ensures tailored performance according to unique system requirements. The stamped orifice diameter on one of the cartridge's hex faces verifies the customization for accuracy and traceability. The CNICXFN model operates effectively within a maximum pressure of 5000 psi (350 bar) and can handle up to 120 gpm (480 L/min), showcasing its capability to support substantial hydraulic flows. It fits into a T18A cavity and is part of Sun Hydraulics' Series 4, ensuring compatibility with standard configurations in hydraulic systems. Its construction includes Sun\u2019s floating style design which minimizes internal parts binding\u2014a frequent issue caused by excessive installation torque or variations in cavity/cartridge machining. This valve's non-compensating nature means the fixed orifice size directly influences flow regulation through the valve, proportional to the square root of the pressure differential across ports 1 and 2. For installation, it requires a torque between 350 - 375 lbf\u00b7ft (474 - 508 Nm), and it accommodates an orifice range from .016 to .218 inches (0.4 to 5.5 mm). The valve's robust design is complemented by a Viton seal kit for enhanced durability and resistance against harsh fluids. Ideal for applications where precise flow control is necessary without compensation for pressure variations, the CNICXFN offers reliability in maintaining set flow conditions within hydraulic circuits, contributing significantly to system efficiency and stability.

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 HYDRAULICSCNICXFN

SUN HYDRAULICS
CNICXFN