Assembly Build Process

Sun's Assembly Build Process allows you to configure a cartridge and manifold, or main stage and pilot stage cartridge, and build a digital assembly in three dimensional space. The resulting output of this process is the assembly product page, including configuration-specific images, symbols, product information and CAD files for download.

The Assembly Build Process can be accessed from either a cartridge or manifold product page. Only valid choices are allowed.

From a manifold page, you must first choose your cartridge function. Once you choose your function, click on the BUILD ASSEMBLY button below the WHERE TO BUY BUTTON. Once clicked, you will be presented with valid cartridges for your manifold. Select the cartridge of your choice and follow the instructions at the top of the page. If your particular combination has been generated before, the resulting assembly page will be available immediately. If not, you will be asked to enter your email address. Once the page is complete, an email will be sent to you including a link to the assembly product page.

From a cartridge product page, click on BUILD ASSEMBLY and you will be presented with a listing of compatible manifolds. In the case of main stage and pilot stage cartridges, you can either build a cartridge to cartridge assembly or a cartridge to manifold assembly. Once your choice has been made, follow the instructions at the top of the page. If your particular combination has been generated before, the resulting assembly page will be available immediately. If not, you will be asked to enter your email address. Once the page is complete, an email will be sent to you including a link to the assembly product page.

Please note that the Assembly Build Process is an automated process. It can be utilized at any time. Pages are generated typically within minutes but delays can occasionally be expected. In the event of a delay, a team at Sun will work to resolve the issue to ensure you receive your information as quickly as possible.

FLeX Series electro-proportional, blocking poppet throttle - normally closed

Capacity: 2.6 gpm9,8 L/min. | Cavity: T-162A

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Technical Features [ + ]

This valve is a normally closed, electro-proportional, blocking poppet throttle that is spring-biased closed. Energizing the coil generates an opening force on the poppet 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 2-to-1 direction and will provide proportional flow control in the 1-to-2 direction with the addition of an external compensator. Full reverse flow (1-to-2) with 100% command in the 1-to-2 direction is possible without a compensator under all conditions.

Designed and tested to 1 million on-off operational cycles.
Direct actuated and requires no minimum hydraulic pressure for operation.
This valve exhibits a large degree of self-compensation in the 2-to-1 direction and will provide proportional flow control in the 1-to-2 direction with the addition of an external compensator.
Full reverse flow (1-to-2) with 100% command in the 1-to-2 direction is possible without a compensator under all conditions.
50-psi (3,5-bar) minimum back pressure is recommended.
Extremely low leakage - 0.004 in3 (0.07 cc3)/min (1 drop/min)
For optimum performance, an amplifier with current sensing and adjustable dither should be used. Dither should be adjustable between 100 - 250 Hz.
FLeX Series proportional valves are fully compatible with the XMD Expandable Mobile Drivers from Sun.
Exceeds new NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.
Designed using CFD fluid simulation for optimized geometries.
Capacities rated at 200-psi (14-bar) differential.
All configurations of this valve include zinc-nickel plating as standard for 1000-hour salt fog protection.
This valve can be used with both the 740 Series high-power coils and 747 Series hazardous location coils.
A wide variety of coil termination and voltage options are available, with and without surge protection. See the CONFIGURATION section.
Coil connector options offer ratings up to IP69K. See individual coil product pages for details.
A FULL DATA SHEET is available for this model using the link at the top of the page.
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.

Technical Data [ + ]

Proportional Performance Data [ + ]

Performance Curves [ + ]

FAQs [ + ]

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.

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 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.

Is the FLeX program available in QuickDesign SmartConnect?

Yes. All FLeX phase 1 valves are available in the SmartConnect schematic tool, and are also available for submittal to QuickDesign.

What parts of the Sun cartridge valve are field serviceable?

Only external seals are serviceable. Sun offers replacement seal kits for all cartridge models. The applicable kit part number can be found in the product page's Technical Data table or by using our Cartridge Seal Kit search function located under Accessories. Please note: Converting the external seals from one material to another does not ensure fluid compatibility with that material due to the existence of internal seals within the cartridge.

Do FLeX valves utilize a floating nose design?

Yes. All FLeX valves utilize the Sun floating nose design.

What is the difference between nominal and maximum flow capacity?

Nominal flow capacity is based on performance limits. Maximum flow capacity is based on pressure drop. When selecting any direct-acting solenoid valve, first check the performance limits plot, then check if pressure drop is acceptable.

Can FLeX proportional valves be driven with an explosion proof coil?

Yes. The 747 series explosion proof coils can be used on any FLeX proportional valve.

Notes [ + ]

Additional Resources [ + ]

FPBUXCN

Configuration Rules

Cavity	T-162A
Series	0
Capacity	2.6 gpm9,8 L/min.
Maximum Operating Pressure	5000 psi350 bar
Maximum Valve Leakage at 110 SUS (24 cSt)	0.004 in³/min.@5000 psi0,07 cc/min.@350 bar
Viscosity Range	35 - 2000 SUS2,8 - 380 cSt
Response Time - Typical	50 ms50 ms
Switching Frequency	15,000 max. cycles/hr15,000 max. cycles/hr
Valve Hex Size	3/4 in.19,1 mm
Valve Installation Torque	20 - 25 lbf ft27 - 33 Nm
Model Weight	.30 lb0,15 kg
U.S. Patent #	10,302,20110,302,201
Seal kit - Cartridge	Buna: 990162007
Seal kit - Cartridge	Viton: 990162006

Hysteresis (with dither)	14%14%
Linearity (with dither)	5%5%
Repeatability (with dither)	7%7%
Recommended dither frequency	100 Hz100 Hz
Deadband, nominal (as a percentage of input)	50%50%

FPBU | Cartridges » Electro-Proportional » Flow Control | Sun Hydraulics

Assembly Build Process

Assembly Build Process

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FLeX Series electro-proportional, blocking poppet throttle - normally closed

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