Bypass/restrictive, priority flow control with reverse flow check assembly


Top Cell
Function for YFEY: Flow Control, Priority Flow On B, Bypass to T, Reverse Free Flow Check
Flow Control, Priority Flow On B, Bypass to T, Reverse Free Flow Check
Bottom Cell
Technical Features [ + ]

This assembly consists of a bypass/restrictive, fixed-orifice, priority flow control which takes an input flow at port B (in) and uses it to satisfy the priority flow at port B (out). If the input flow exceeds the priority flow requirement, the excess is bypassed out port T. The reverse flow check provides unrestricted flow out of port B.

  • The sharp-edged orifice design minimizes flow variations due to viscosity changes.
  • The tuneable control option provides +/- 25% variation from the nominal factory pre-set flow. Turn the adjustment clockwise to increase.
  • Customer must specify a flow rating. Factory set flow ratings are within +/- 10% of the requested setting.
  • Both priority and bypass flow are usable up to the system operating pressure.
  • Bypass flow is not available until priority flow requirements are satisfied.
  • Maximum pressure at the priority port should be limited to 3000 psi (210 bar).
Technical Data [ + ]
Body Type SandwichSandwich
Interface ISO 05 - X&YISO 05 - X&Y
Capacity 30 gpm120 L/min.
Body Features Meter in BMeter in B
Stack Height 2.49 in.63 mm
Seal Plate Included (see notes) YesYes
FAQs [ + ]

There are exactly 250 Sun drops in a cubic inch or 15 in a cc.

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.

Notes [ + ]
  • Stack height value in technical data table includes seal retainer plate.
  • This installation requires a seal retainer plate and seal kit which are purchased separately. See "Related Accessories" section.
  • For detailed information regarding the cartridges contained in this assembly, click on the models codes shown in the Included Components tab.
  • Important: Carefully consider the maximum system pressure. The pressure rating of the manifold is dependent on the manifold material, with the port type/size a secondary consideration. Manifolds constructed of aluminum are not rated for pressures higher than 3000 psi (210 bar), regardless of the port type/size specified.
Additional Resources [ + ]