SUN HYDRAULICS
FXFAXBN

$334.38 USD

SUN HYDRAULICS
Material:FXFAXBN
Model:FXFA-XBN
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 FXFAXBN (FXFAXBN) is a fixed orifice, pressure-compensated flow control valve designed for precise flow regulation in meter-in or meter-out applications subject to wide pressure fluctuations. This model allows users to specify a desired flow rating, which is factory set within 10% of the requested value. It features a tunable control option providing a 20% variation from the nominal factory preset flow, adjusted by turning the screw clockwise to increase flow. The sharp-edged orifice design minimizes variations due to viscosity changes, ensuring consistent performance. This valve incorporates Sun's floating style construction, reducing the risk of internal binding due to excessive installation torque or machining variations in cavity/cartridge interfaces. The FXFAXBN fits into a T-18A cavity and belongs to Series 4 with a capacity of 50 gpm (200 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). The valve hex size measures 1-5/8 inches (41.3 mm), and its installation torque ranges from 350 to 375 lbf-ft (475 to 508 Nm). The adjustment screw has an internal hex size of 5/32 inch (4 mm), while the locknut hex size is 9/16 inch (15 mm) with a torque specification of 80 to 90 lbf-in (9 to 10 Nm). Weighing approximately 2.80 pounds (1.30 kg), this model is compatible with Viton seal kits, specifically cartridge part number 990018006. This flow control valve's applications are diverse due to its ability to maintain consistent flow rates despite pressure changes, making it suitable for hydraulic systems requiring stable performance under varying conditions.

Description

Fixed-orifice, pressure-compensated flow controls provide precise flow regulation for meter-in or meter-out applications where there may be wide pressure fluctuations. The flow setting is specified by the user and is set at the factory.

Customer must specify a flow rating. Factory set flow ratings are within +/- 10% of the requested setting.
The tuneable control option provides +/- 20% variation from the nominal factory pre-set flow. Turn the adjustment clockwise to increase.
The sharp-edged orifice design minimizes flow variations due to viscosity changes.
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.
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	50 gpm200 L/min.
Maximum Operating Pressure	5000 psi350 bar
Valve Hex Size	1 5/8 in.41,3 mm
Valve Installation Torque	350 - 375 lbf ft475 - 508 Nm
Adjustment Screw Internal Hex Size	5/32 in.4 mm
Locknut Hex Size	9/16 in.15 mm
Locknut Torque	80 - 90 lbf in.9 - 10 Nm
Model Weight	2.80 lb1,30 kg
Seal kit - Cartridge	Viton: 990-018-006

Show FAQ

What happens if I block the bypass port on a priority flow control?	The valve acts as a 2 port restrictive flow control.
How big is a drop of hydraulic oil?	There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
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.
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 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.
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.

SUN HYDRAULICSFXFAXBN

SUN HYDRAULICS
FXFAXBN