SUN HYDRAULICS
FPCHDBN912

SUN HYDRAULICS
Material:FPCHDBN912
Model:FPCH-DBN@912
Summary:Cartridge

Due to extremely high demand, please call 800-289-1330 for availability

***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 FPCHDBN912 (FPCHDBN912) is a normally-open, electro-proportional throttle valve designed for precise flow control in hydraulic systems. This valve operates by balancing the force generated by an energized coil with spring and flow forces, creating a metering orifice proportional to the command current. It features self-compensation in the 1 to 2 direction and can provide proportional flow control in the reverse direction with an external compensator. The valve can handle pressures up to 5000 psi and offers low leakage levels when closed. It supports full reverse flow without a compensator under all conditions. The FPCHDBN912 is available in normally open or closed configurations with three capacity ranges, making it versatile for various applications. Coils are interchangeable with other Sun solenoid-operated valves and can be mounted in either direction on the tube. The valve incorporates Sun's floating style construction to minimize internal binding due to installation torque or cavity machining variations. For optimal performance, it is recommended to use an amplifier with current sensing and adjustable dither between 100-250 Hz. Manual override options include no override or temporary actuation mechanisms like detent or momentary-twist, with a mechanical life expectancy of approximately 7,000 cycles for certain models. The cavity type is T-13A, series 1, with a capacity of 7 gpm (28 L/min). The valve requires an installation torque of 30-35 lbf ft (41-47 Nm) and has a hex size of .78 inches (22.2 mm). It weighs approximately 1.10 lb (0.50 kg) with the coil installed. This product offers reliable hydraulic control solutions where precision and adaptability are required, supported by its robust construction and flexible configuration options.

Description

This valve is a normally-open, electro-proportional throttle. The valve is spring biased open. Energizing the coil generates an closing force on the spool proportional to the command current and this force is countered by the spring and flow forces. This force balance creates a metering orifice whose effective size is proportional to the current. The valve exhibits a large degree of self-compensation in the 1 to 2 direction and will provide proportional flow control in the 2 to 1 direction with the addition of an external compensator. Full reverse flow (2 to 1) with no command in the 2 to 1 direction is possible without a compensator under all conditions.

Available in either a normally open or normally closed configuration with three different capacity ranges.
Capable of operating with pressures up to 5000 psi.
Low leakage levels in the closed position.
Coils are interchangeable with Sun's other full flow, solenoid-operated valves and can be mounted on the tube in either direction.
This cartridge has several manual override choices, including no manual override. See Option Configuration.
For optimum performance, an amplifier with current sensing and adjustable dither should be used. Dither should be adjustable between 100 - 250 Hz.
On models equipped with the D or L control, the detent mechanism in the manual override is meant for temporary actuation. The D, E, L and T manual control assemblies have a mechanical life expectancy of approximately 7,000 cycles.
The momentary/twist override option "E" allows the operator to shift the valve by twisting the manual override clockwise 90 degrees.
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-13A
Series	1
Capacity	7 gpm28 L/min.
Maximum Valve Leakage at 110 SUS (24 cSt)	6 in³/min.@3000 psi100 cc/min.@210 bar
Manual Override Force Requirement	5 lbs/1000 psi @ Port 133 N/100 bar @ Port 1
Manual Override Stroke	.10 in.2,5 mm
Solenoid Tube Diameter	.75 in.19 mm
Valve Hex Size	7/8 in.22,2 mm
Valve Installation Torque	30 - 35 lbf ft41 - 47 Nm
Model Weight (with coil)	1.10 lb0,50 kg
Seal kit - Cartridge	Viton: 990-413-006
Seal and nut kit - Coil	Viton: 990-770-006Viton: 990-770-006

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 HYDRAULICSFPCHDBN912

SUN HYDRAULICS
FPCHDBN912