Baugruppe erstellen

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.

3-Wege Vorzugsdruckwaage

Durchfluss: 120 gpm480 L/min. | Einschraubbohrung: T-34A

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Technische Eigenschaften [ + ]

Eine 3-Wege Vorzugsdruckwaage in Kombination mit einer externen Blende ergibt ein 3-Wege Vorzugsstromregelventil. Vom Zulauf (Anschluss 3) führt der Vorzugsölstrom zum Anschluss 2. Überschüssiger Volumenstrom wird nach Anschluss 4 (Bypass) umgelenkt. Das Signal nach der Blende ist mit Anschluss 1 verbunden. Die Lage der Druckwaage vor der Blende führt dazu, dass Druck und Volumen primärseitig geregelt werden, unabhängig vom Druck im Bypass. Dieses Ventil ist gleichermaßen mit Ventilen, die offene oder geschlossene Mittelstellung haben, einsetzbar. Der Hauptverwendungszweck ist der Antrieb von Zusatzgeräten, die ohne zusätzliche Pumpe vom Hauptkreis versorgt werden sollen.

Erst wenn die Bedingungen für den Vorzugsölstrom erfüllt sind, ist Restölstrom verfügbar.
Der Vorzugsölstrom kann mit einem magnetbetätigten 3-Wege-Vorsteuerventil an Anschluss 1 zu- und abgeschaltet werden.
Der Restölstromdruck an Anschluss 4 kann über dem Druck des Vorzugsölstroms an Anschluss 2 liegen.
Cartridges with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
Die schwimmende Bauweise der SUN Einschraubventile kompensiert größere Fertigungs- und Formtoleranzen der Einschraubbohrungen und überhöhte Anzugmomente.

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Technische Daten [ + ]

Wichtig: In Abhängigkeit von der Konfiguration variieren die Daten. Bitte beachten Sie den Konfigurationsbereich.

Einschraubbohrung	T-34A
Serie	4
Durchfluss	120 gpm480 L/min.
Zulässiger Betriebsdruck	5000 psi350 bar
Schlüsselweite des Ventilsechskants	1 5/8 in.41,3 mm
Anzugsdrehmoment des Einschraubventils	350 - 375 lbf ft474 - 508 Nm
Gewicht	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 [ + ]

Wie groß ist ein Tropfen Hydrauliköl?

Es sind genau 250 "SUN" Tropfen in einem cubic inch oder 15 in einem ccm.

Was passiert, wenn ich an einem Vorzugsstromregler den Bypassanschluss verschließe?

Das Ventil arbeitet als 2-Wege-Stromregler.

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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Zusätzliche Hilfsmittel [ + ]

Highlights

Technische Hinweise