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Model

LHFAXFN

Control
Differential Pressure

Bypass/restrictive, priority modulating element

Cavity: T-32A | Capacity:

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Model

LHFAXFN

Control
Differential Pressure

Technical specifications

Bypass/restrictive modulating elements, when combined with an external orifice, create a bypass/restrictive flow control. Input flow (port 3) is directed to the priority or control flow at port 2. Once the priority requirements are met, excess flow is bypassed out port 4. The after-orifice signal is connected to port 1. The before-orifice design allows both pressure and flow to be controlled on the priority side of the circuit regardless of pressure in the bypass circuit. These valves work equally well in either closed or open center systems. Their main use is to allow after-market accessories to be driven off the host machine's hydraulic system without adding an additional pump.

  • Bypass flow is not available until priority flow requirements are satisfied.
  • Priority flow can be turned on or off with a pilot-sized, three-way solenoid valve on port 1.
  • Bypass pressure at port 4 can be higher than pressure at control port 2.
  • 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.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.

Model CAD Files

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Symbol CAD Files

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