fpbf | Cartouches » Flow Control » Régulation Compensée

This valve is a pilot-operated, normally closed, electro-proportional throttle with reverse free-flow check. Energizing the coil generates an opening force on the pilot stage which vents the main stage poppet to open proportionally, allowing flow from port 2 to 1. In the open condition, flow from 1 to 2 will cause the valve to auto-close and only pilot flow will pass from 1 to 2.

Les capacités du tiroir sont données pour une différence de pression de 14 bar (200 psi), au courant maxi de la bobine.
FLeX Series proportional valves are fully compatible with the XMD Expandable Mobile Drivers from Sun.
Designed and tested to 10 million on-off operational cycles.
Exceeds new NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.
Improved linearity and resolution over similar competing valves.
Designed using CFD fluid simulation for optimized geometries.
For optimum performance, an amplifier with current feedback and adjustable dither (100 - 250 Hz) should be used.
Depending on circuit requirements, a reverse free flow check bypassing the compensator may be needed when using an FPB* with an external compensator.
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.
Cette valve intègre le concept Sun de la cartouche à visser "flottante" qui permet de minimiser les contraintes internes dues à un couple de serrage excessif de la cartouche et/ou à des écarts d’usinage des cavités ou des cartouches.

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Remarque: Les caractéristiques peuvent changer selon la configuration. Voir la section CONFIGURATION.

Cavité	T-162A
Taille	0
Capacité	5 gpm20 L/min.
Pression maximale de fonctionnement	5000 psi350 bar
Hystérésis (avec dither)	15%15%
Linéarité (avec dither)	3%3%
Répétabilité (avec dither)	3%3%
Fréquence de dither recommandée	140 Hz140 Hz
Fuite Maximale à 24 cSt (100 SUS)	0.004 in³/min.@3000 psi0,07 cc/min.@210 bar
Pression d'ouverture du clapet de by-pass	100 psi7 bar
Gamme de Viscosité	35 - 2000 SUS2,8 - 380 cSt
Zone morte nominale (pourcentage du débit d'entrée)	48%48%
Temps de Réponse - Typique	50 ms50 ms
Fréquence de commutation	15,000 max. cycles/hr15,000 max. cycles/hr
Dimensions du six pans de la valve	3/4 in.19,1 mm
Couple de serrage de la valve	20 à 25 lbf ft27 - 33 Nm
Poids du composant	5.6 oz.159 grams
Seal kit - Cartridge	Buna: 990162007
Seal kit - Cartridge	Viton: 990162006

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Performance Curve for FPBF: FLeX Series pilot-operated, Normalement Fermé, électro-proportionnel Étrangleur - flow 2-1

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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.

Quel est le volume d'une goutte d'huile hydraulique ?

Il y a exactement 15 gouttes Sun dans un centimètre cube.

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.

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.

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Il est nécessaire de vérifier l'encombrement des cartouches lorsque vous sélectionnez un bloc foré. Différents types de valves, de dispositifs de contrôle, et de bobines nécessitent des encombrements disponibles différents.
Pour permettre l'installation ou le retrait de la bobine il est nécessaire de prévoir une hauteur libre dans le prolongement du tube magnétique d'au moins 50,8 mm (2.00 in).

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