3 Voies, réglable pleine plage, balance de pression 2 voies / 3 voies, à débit prioritaire contrôle de débit Valve

Capacité: 30 gpm120 L/min. | Cavité: T-17A
FREL : 3 Voies, réglable pleine plage, balance de pression 2 voies / 3 voies, à débit prioritaire contrôle de débit Valve
Caractéristiques techniques [ + ]

This valve is a fully adjustable, bypass/restrictive, priority flow control valve. The valve takes an input flow at port 1 and uses it to satisfy the priority flow at port 3. If the input flow exceeds the priority requirement, the excess is bypassed out port 2.

The valve pressure compensates the priority flow for precise flow regulation for applications where there may be wide pressure fluctuations. Port 2 may also be completely blocked so that the valve can be used as a 2-way, pressure compensated flow control from 1 to 3.

  • Les deux débits, prioritaire et excédentaire, sont utilisables à la pression de travail du système.
  • Le débit prioritaire reste relativement constant quelque soit la variation du débit d’entrée.
  • Il n’y a pas de débit excédentaire tant que le débit prioritaire n’est pas satisfait.
  • La pression à l’orifice 2 (excédentaire) peut être supérieure à celle de l’orifice 3 (prioritaire).
  • In applications where the priority flow will be completely blocked, bypass pressure drop will increase over time unless a leak path is provided for the priority flow.
  • Designed using CFD fluid simulation for optimized geometries.
  • Exceeds NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.
  • 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-17A
Taille 3
Capacité 30 gpm120 L/min.
Pression maximale de fonctionnement 5000 psi350 bar
Gamme de Viscosité 35 - 2000 SUS2,8 - 380 cSt
Adjustment - No. of CCW Turns from Fully Closed to Fully Open 55
Typical Valve Leakage at 110 SUS (24 cSt) from port 1 to port 3 at 5000 psi (350 bar) 75 mL/min.75 mL/min.
Rated Maximum Priority 17.6 gpm66,5 L/min.
Temps de Réponse - Typique 50 ms50 ms
Dimensions du six pans de la valve 1"1/4 in.31,8 mm
Couple de serrage de la valve 150 à 160 lbf ft203 - 217 Nm
Poids du composant 1,20 lb0,55 kg
Performance Curves [ + ]
FAQs [ + ]

The valve acts as a 2 port restrictive flow control.

The spring force in our flow controls equates to about 100 psi (7 bar). This is high enough to give the valves acceptable capacity and not too high for proper circuit operation. 100 psi (7 bar) is the spring force; at the upper end of the flow control's range, the drop through the valve will be as high as 250 psi (17 bar) before it starts modulating.

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

In a meter-in flow control circuit if the pump is set at 3000 psi and the load is 2000 psi the drop through the flow control is 1000 psi. In a meter-out circuit with the load at 2000 psi the drop through the flow control is 2000 psi.

We claim +/- 10%. We set to +/- 5% in production testing to allow for differences in customers' conditions. If you want accuracy, stay in the bottom 2/3rds of the range. Our 12 gpm (45 L/min.) flow controls are quite flat at 9 gpm (34 L/min.) and dead flat below 6 gpm (23 L/min.), until you get to the bottom of the range. Below about .25 gpm (1 L/min.), spool leakage and orifice conditions start to limit accuracy.

I am afraid not. Unless you are overflowing your current valve and correctly size ours, you are not likely to notice any improvement. Priority flow controls are not efficient devices. They are an easy way to get more than 1 source of oil from 1 pump but they can generate a lot of heat. Try to size your actuators so the pressures are similar on both the priority and the bypass circuits. If you can't do that, try to have the lower flow leg be the lower pressure. The pump pressure is determined by whichever leg is higher and if there is flow that is taking a pressure drop that is not doing work it is creating heat.

All flow is blocked, hence the term priority. The priority flow has to be satisfied.

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.
Ressources Complémentaires [ + ]