Électro-proportionnel limiteur de pression Valve - pression de tarage en absence de signal

Capacité: 25 gpm95 L/min. | Cavité: T-13A
RPEI : Électro-proportionnel limiteur de pression Valve - pression de tarage en absence de signal
Caractéristiques techniques [ + ]

This 2-port, pilot-operated relief cartridge is an electro-proportionally controlled, normally-closed pressure regulating valve. The valve is spring biased closed to its highest setting (customer specified). Increasing current to the coil will proportionally decrease the pressure setting. When the pressure at port 1 (inlet) is sufficient to overcome the spring force minus the solenoid force, as determined by the analog input signal, the poppet lifts and allows flow from port 1 to port 2 (outlet).

  • The setting represents the maximum relief pressure which the valve will default to with no command. As the command increases, the relief setting will decrease. See performance curves for selected pressure range.
  • Varying the analog input signal to the proportional solenoid provides a step-less control of pressure.
  • Damped construction provides stable operation over a wide range of operating conditions.
  • For optimum performance, an amplifier with current sensing and adjustable dither should be used. Dither should be adjustable between 100 - 250 Hz.
  • This cartridge utilizes 740 Series low-power and high-power coils, and 747 Series hazardous location coils.
  • 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 valve is fully compatible with the XMD Expandable Mobile Drivers from Sun.
  • The preferred mounting configuration is horizontal or vertically with the coil down. The valve can be mounted coil up if it is installed below reservoir oil level to prevent air accumulation in the solenoid tube. Do not actuate the valve manually or electrically when the valve is not installed.
  • Coils can be mounted on the tube in either direction.
  • 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.
Caractéristiques [ + ]
Remarque: Les caractéristiques peuvent changer selon la configuration. Voir la section CONFIGURATION.
Cavité T-13A
Taille 1
Capacité 25 gpm95 L/min.
Tarage en usine établi à 4 gpm15 L/min.
Pression maximale de fonctionnement 5000 psi350 bar
Fuite Maximale à 24 cSt (100 SUS) 2 in³/min.@1000 psi30 cc/min.@70 bar
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 0,55 lb0,25 kg
Brevet Américain # 10,775,81210,775,812
Seal kit - Cartridge Buna: 990010007
Seal kit - Cartridge Viton: 990010006
Seal and nut kit - Coil Viton: 990740006
Caractéristiques de la Fonction Proportionnelle [ + ]
Remarque: Les caractéristiques peuvent changer selon la configuration. Voir la section CONFIGURATION.
Hystérésis (avec dither) A-Range: 9%, W-Range: 10%A-Range: 9%, W-Range: 10%
Linéarité (avec dither) A-Range: 3%, W-Range 5%A-Range: 3%, W-Range 5%
Répétabilité (avec dither) 3%3%
Fréquence de dither recommandée 110 Hz110 Hz
Zone morte nominale (pourcentage du débit d'entrée) 35%35%
Performance Curves [ + ]
FAQs [ + ]

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.

The kick-down relief acts much like a circuit breaker. When the pressure at the inlet (port 1) of the relief valve rises to the setting, the valve pops open and drops the pressure down to 100 psi or so. The valve stays open until flow through it stops. Shutting off the supply of oil will reset the valve; reversing pressure on the valve is a positive way of resetting it.

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.

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

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.

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.

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.
Notes [ + ]
  • 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).
Ressources Complémentaires [ + ]
A la Une de Sun
Informations et Conseils Techniques Pour les Differentes Fonctions Hydrauliques SUN
Technical Information
infos pour les Bobines [ + ]

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