FLeX Series électro-proportionnel, blocking Clapet Étrangleur - Normalement Fermé
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.
- Pour optimiser les performances, il est recommandé d’utiliser un amplificateur ayant un bouclage de courant et un dither réglable entre 100 et 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.
- 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)
- 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.
| Cavité | T-162A |
| Taille | 0 |
| Capacité | 2.6 gpm9,8 L/min. |
| Pression maximale de fonctionnement | 5000 psi350 bar |
| Fuite Maximale à 24 cSt (100 SUS) | 0.004 in³/min.@5000 psi0,07 cc/min.@350 bar |
| Gamme de Viscosité | 35 - 2000 SUS2,8 - 380 cSt |
| 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 | 0,30 lb0,15 kg |
| Brevet Américain # | 10,302,20110,302,201 |
| Seal kit - Cartridge | Buna: 990162007 |
| Seal kit - Cartridge | Viton: 990162006 |
| Hystérésis (avec dither) | 14%14% |
| Linéarité (avec dither) | 5%5% |
| Répétabilité (avec dither) | 7%7% |
| Fréquence de dither recommandée | 100 Hz100 Hz |
| Zone morte nominale (pourcentage du débit d'entrée) | 50%50% |
All flow is blocked, hence the term priority. The priority flow has to be satisfied.
The valve acts as a 2 port restrictive flow control.
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.
Il y a exactement 15 gouttes Sun dans un centimètre cube.
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.
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 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.
Yes. All FLeX phase 1 valves are available in the SmartConnect schematic tool, and are also available for submittal to QuickDesign.
- 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).
- Les Bases de l'Électro-Proportionnel
- Factory-tuned, optimized electro-hydraulics right out of the box
- Encore Une Solution Optimisée par Sun Hydraulics !
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- SUNs kleinste 2- und 3-Wege Druckminderventile bieten beste Eigenschaften auch bei kleinen Volumenströmen.
- New FLeX Series Solenoid-Operated Directional Valves
- QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool
- Get the relief you need. Adjustable. Ventable. Blockable. FLeX-ible.
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- Pourquoi attendre ? Obtenez Sun’s FLeX valves & nos nouveaux XMD modules quand vous les voulez.
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