SUN HYDRAULICS
CNGCXFN

$89.35 USD

SUN HYDRAULICS
Material:CNGCXFN
Model:CNGC-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 CNGCXFN (CNGCXFN) is a specialized hydraulic flow control valve designed for precise fluid handling in various applications. This fixed orifice, non-pressure compensated flow control valve includes a reverse flow check feature, ensuring versatile use across multiple hydraulic systems. The product is distinguished by its user-specified orifice diameter, which is factory-set based on individual requirements and clearly stamped on the hex face of the cartridge for easy identification. Constructed to fit seamlessly into any corresponding flow control manifold, the CNGCXFN valve features interchangeable 2-port flow control cartridges that share the same flow path and cavity for a given frame size. Despite their interchangeability, it's important to note that cartridge extension dimensions may vary from the mounting surface. The valve operates by regulating the flow through the fixed orifice size in proportion to the square root of the pressure differential across ports 1 and 2, making it essential for applications requiring consistent fluid regulation without compensation for pressure variations. The CNGCXFN is built to withstand corrosive environments, with options for external stainless steel components (model code suffix AP) or external zinc-nickel plated components (model code suffix LH), enhancing its durability and lifespan under challenging conditions. It also incorporates Sun's floating style construction which minimizes internal part binding due to excessive installation torque or cavity/cartridge machining variations. Key specifications include a maximum operating pressure of 5000 psi (350 bar), an orifice range from .016 to .218 inches (0.4 to 5.5 mm), and a capacity up to 60 gpm (240 L/min). The valve's robust design is complemented by its compact weight of 1.10 lbs (0.50 kg) and requires an installation torque between 150 - 160 lbf.ft (203 - 217 Nm). Suitable seal kits are available with Viton construction, ensuring reliable sealing capabilities under various operational conditions.

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.
Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
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-16A
Series	3
Capacity	60 gpm240 L/min.
Maximum Operating Pressure	5000 psi350 bar
Orifice Range	.016 - .218 in.0,4 - 5,5 mm
Valve Hex Size	1 1/4 in.31,8 mm
Valve Installation Torque	150 - 160 lbf ft203 - 217 Nm
Model Weight	1.10 lb0,50 kg
Seal kit - Cartridge	Viton: 990-016-006

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 HYDRAULICSCNGCXFN

SUN HYDRAULICS
CNGCXFN