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.

Fixed-orifice, valve parachute Valve

Capacité: 50 gpm200 L/min. | Cavité: T-18A

Développer

Caractéristiques techniques [ + ]

Les valves parachute en cartouche maintiennent un récepteur en position en cas de rupture de flexible. La valve laisse circuler le débit venant ou allant au récepteur mais se ferme instantanément si le débit venant du récepteur excède le tarage de la valve.
Note : Parce que la valve a un temps de réponse extrêmement court, elle est sensible à toute pointe de débit dépassant son tarage.

Le débit doit être spécifié par le client. Le débit effectif aura une tolérance de +/- 10% autour du débit spécifié.
La valve se ferme si le débit de l’orifice 1 vers l’orifice 2 dépasse la valeur réglée. Elle se rouvre quand les pressions aux orifices 1 et 2 sont égales.
Le réglage du débit doit être supérieur d’au moins 25% au débit normal du système. Le client doit spécifier le débit lors de la commande.
Cette valve de conception à tiroir a par conséquent un débit de fuite. Une dérive du récepteur est possible.
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-18A
Taille	4
Capacité	50 gpm200 L/min.
Pression maximale de fonctionnement	5000 psi350 bar
Fuite Maximale à 24 cSt (100 SUS)	5 in³/min.@1000 psi80 cc/min.@70 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	2,90 lb1,30 kg
Seal kit - Cartridge	Buna: 990018007
Seal kit - Cartridge	Polyurethane: 990018002
Seal kit - Cartridge	Viton: 990018006

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Performance Curves [ + ]

Performance Curve for FQIA: Fixed-orifice, valve parachute Valve

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FAQs [ + ]

Every time I try to lower my load the flow fuse trips. What's wrong?

What's wrong is that every time you start to lower your load, you get a flow transient that exceeds the setting of the flow fuse and trips it. Sun's flow fuses are very consistent and very fast.

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 flow fuse to prevent the loss of oil?

NO! Flow fuses are meant to prevent the uncontrolled movement of an actuator in case of hose failure.

Can I use a flow fuse to provide fire protection?

NO! Flow fuses are meant to prevent the uncontrolled movement of an actuator in case of hose failure. To avoid false tripping they must be set above the typical system flow, usually 50% above. On a 4 gpm (15 L/min.) circuit the flow fuse may need to be set at 6 gpm (23 L/min.) to avoid false tripping. Hoses do not normally fail totally, they spring a leak. If the hose springs a 5.5 gpm (21 L/min.) leak the flow fuse will not trip. 5.5 gpm (21 L/min.) of hydraulic fluid will feed a fire that would heat a small town in Ohio (Denmark) in January!

How should I choose the setting of a flow fuse?

It is very, very difficult to predict the transient flows in a system. We say at least 25% above maximum normal system flow and should say 50%. Don’t back yourself into a corner by sizing a flow fuse at the top end of its range unless you can test it. If you have an FQCA in a 4 gpm (15 L/min.) circuit, set at 6 gpm (23 L/min.) and it false trips, you are out of luck. Select an FQEA and leave yourself some room for tuning.

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.

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Ressources Complémentaires [ + ]

A la Une de Sun

Informations et Conseils Techniques Pour les Differentes Fonctions Hydrauliques SUN