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.

Balance de pression 3 voies, à débit prioritaire

Capacité: 120 gpm480 L/min. | Cavité: T-34A

Développer

Caractéristiques techniques [ + ]

Combiné avec un étranglement externe cet élément de régulation génère une régulation de débit 3 voies. Le débit d’alimentation (orifice 3) satisfait en priorité le débit à l’orifice 2. Lorsque le débit prioritaire est atteint, l’ excédent est dérivé par l’orifice 4. Le signal placé à la sortie de l’étranglement est raccordé à l’orifice 1. Le concept de compensation avant l’étranglement permet de contrôler le débit aussi bien que la pression du prioritaire sans influence de la pression du circuit excédentaire. Ces valves fonctionnent aussi bien dans les circuits ouverts que dans les circuits fermés. Leur vocation principale est de permettre l’adjonction d’accessoires à des machines déjà en service, en utilisant leur circuit hydraulique sans adjonction d’une pompe supplémentaire.

Il n’y a pas de débit excédentaire tant que le débit prioritaire n’est pas satisfait.
Le débit prioritaire peut être activé ou arrêté en utilisant un distributeur de pilotage sur l’orifice 1 (contrôle).
La pression à l’orifice 4 (excédentaire) peut être supérieure à celle de l’orifice 2 (prioritaire).
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.
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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Caractéristiques [ + ]

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

Cavité	T-34A
Taille	4
Capacité	120 gpm480 L/min.
Pression maximale de fonctionnement	5000 psi350 bar
Dimensions du six pans de la valve	1"5/8 in.41,3 mm
Couple de serrage de la valve	350 - 375 lbf ft474 - 508 Nm
Poids du composant	3,30 lb1,50 kg
Seal kit - Cartridge	Buna: 990034007
Seal kit - Cartridge	EPDM: 990034014
Seal kit - Cartridge	Polyurethane: 990034002
Seal kit - Cartridge	Viton: 990034006

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FAQs [ + ]

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

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

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.

Why do you call it a hammer valve?

The valve was developed originally to power demolition hammers. The hammers are aftermarket accessories that are mounted on a large variety of excavators. The "hammer" circuit provides a method of tapping into the existing hydraulic system of the excavator, turning the tool on and off, controlling flow, and limiting pressure.

FAQ hammer valve schematic

Every manufacturer of hammers has very specific needs as far as flow and pressure and there is a large disparity of hydraulic systems in the excavators. For this reason, Sun has never had a catalog package for this circuit.

Sun does not and cannot provide technical support for "hammer valve" installations.

The LH*A looks like just the valve I need to pressure compensate my load-sense whatever. Will it work?

The LH*A family of valves has been optimized to be used in a package to provide a power source for hydraulic tools. We can quantify the performance of the valve in static conditions but we cannot tell you how it will do in your application.

For instance: You want to use the valve as a compensator for a load-sense power steering package. When you are steering the machine and raising an implement, the valve is in a bypass mode (throttling on the bypass side). When the implement actuator bottoms out, pressure jumps to maximum and now the valve needs to change to the restrictive mode. Since the LH*A is balanced against pressure on the bypass side the only thing moving the spool is its own spring. The time this takes is dependent on where the spool was to begin with and where it has to go.

During this transition the steering will see the pressure differential across it suddenly change from about 150 psi (10 bar) to a system pressure of say 3000 psi (200 bar) and suddenly back down to about 150 psi (10 bar). When this scenario was described to me it was termed the broken thumb syndrome.

Sun does not and cannot provide technical support for this type of application. The valve has been successfully used in similar applications. What is necessary to make it work is up to whoever is doing the application.

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Ressources Complémentaires [ + ]

A la Une de Sun

Informations et Conseils Techniques Pour les Differentes Fonctions Hydrauliques SUN