RVCN | Cartouches » Pressure Control » Limiteur de Pression

This FLeX Series solenoid-operated, 2-stage, balanced relief cartridge is a pressure regulating valve.

The valve is normally blocked. De-energized, the valve blocks the flow path from inlet (port 1) to tank (port 2) similar to a spool-type directional valve.

Energizing the solenoid activates the relief function. In relief mode, the valve opens to tank (port 2), throttling flow to regulate the pressure when the pressure at the inlet (port 1) reaches the valve setting. The setting is adjustable with an adjust screw.

Les cartouches configurées avec des joints EPDM s’utilisent dans les systèmes avec des fluides ester phosphate. L’exposition de ces joints à des fluides à base de pétrole, de graisse ou de lubrifiant détériorera les joints.
Designed and tested to 10-million operational cycles at full-rated pressure.
Exceeds new NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.
Higher flow rates than competing valves of similar size.
All configurations of this valve include zinc-nickel plating as standard for 1000-hour salt fog protection.
Coil connector options offer ratings up to IP69K. See individual coil product pages for details.
This cartridge utilizes both 740 Series high-power and 747 Series hazardous location coils.
Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
Main stage orifice is protected by a 150-micron stainless steel screen.
Will accept maximum pressure at port 2.
All configurations of this valve are assembled with a non-removable adjust screw.
FLeX Series relief valves are fully compatible with the XMD Expandable Mobile Drivers from Sun.
A FULL DATA SHEET is available for this model using the link at the top of the page.
Une large gamme d’options de connexions et de tensions d’alimentation des bobines est disponible, avec ou sans diode "Roue Libre" anti-self. Voir la section CONFIGURATION.
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-10A
Taille	1
Capacité	25 gpm95 L/min.
Pression maximale de fonctionnement	5000 psi350 bar
Tarage en usine établi à	4 gpm15 L/min.
Fuite Maximale à 24 cSt (100 SUS)	5 in³/min.@3000 psi80 cc/min.@210 bar
Temps de Réponse - Typique	50 ms50 ms
Response Time - Typical (Relief)	10 ms10 ms
Adjustment - No. of CW Turns from Min. to Max. setting	3,53,5
Dimensions du six pans de la valve	7/8 in.22,2 mm
Couple de serrage de la valve	30 à 35 lbf ft41 - 47 Nm
Taille du 6 Pans Creux de la Vis de Réglage	1/8 in.3,2 mm
Dimension du contre-écrou sur plat	7/16 in.11,1 mm
Couple de serrage du contre écrou	45 - 55 lbf in.5 - 6 Nm
Poids du composant	0,40 lb0,20 kg
Brevet Américain #	10,774,85310,774,853
Seal kit - Cartridge	Buna: 990010007
Seal kit - Cartridge	Polyurethane: 990010002
Seal kit - Cartridge	Viton: 990010006

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Performance Curve for RVCN: FLeX Series 2-stage, solenoid-operated réglable limiteur de pression Valve, normally blocked

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Direct acting, pilot operated, what do I use?

Direct acting valves are used to prevent over pressure and pilot operated valves are used to regulate pressure. If you are unsure, use a direct acting valve. Sun's direct acting valves are very fast, dirt tolerant, stable, and robust. Sun's pilot operated valves are moderately fast, they have a low pressure rise vs. flow curve, and they are easy to adjust.

Where would I use a kick-down relief?

One graphic example is on a portable grain auger for silos. When the farmer gets caught in the auger the kick-down relief trips and allows him to escape.

Quelles sont les tolérances pour les pressions de tarage des valves de contrôle de pression Sun ?

Pour les pressions de tarage les tolérances sont indiquées dans notre page Performances et Caractéristiques Générales. Un lien vers cette page se trouve également dans l’onglet Ressources Complémentaires de la page produit correspondante.

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

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

Can I use a kick-down relief for my system relief?

Maybe not. We build in a good amount of overlap in the kick-down reliefs to prevent false tripping. This means they are not as fast as our standard pilot operated reliefs. A direct-acting relief valve set just above the kick-down relief valve would be good insurance.

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.

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.

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.

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