LSQDB

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Description

A cartridge-style kick-down pilotoperated spool-type sequence valve with internal pilot and spring chamber drain

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  • Technical Feature

    OPERATION:

    Kick-down sequence valves will kick completely open and remain open once the
    pressure at the inlet(port
    ① )exceeds the valve setting, creating an unrestricted flow
    path from
    ① to ② (sequence). The pressure setting at port ① is relative to the drain
    (port
    ③ ). The valve remains open as long as the pressure at port ① exceeds the
    pressure at port
    ② . To reset the valve, pressure at port ① must fall below the setting
    of the valve, flow from
    ① to ② must cease; pressure at port ② must be equal to or
    greater than the pressure at port
    ①.


    FEATURES:

    • Should not be used in load holding applications.
    • The main stage orifice is protected by a 150 micron stainless steel screen.
    • Pressure at port
    ③ is directly additive to the valve setting at a 1:1 ratio and should
    not exceed 5000 psi (350 bar).
    • Intended for use on the actuator side of the system as flow through the valve must
    cease for the valve to reset. If used on the pump side of a system, pump flow must be
    shut off for the valve to reset.


  • PerformanceCurves

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  • Technical Data

    Flow
    See PRESSURE DROP VS.FLOW graph.
    Cavity
    SUN T-11A
    Filtration
    Refer to "Cleanliness of Hydraulic Fluid"
    Max.Operating Pressure
    350Bar
    Internal Leakage
    33 cc/min.@70bar
    Temperature
    -40°F to +250°F(-40°C to +120°C)
    Fluids
    Mineral-based fluids with viscosities of 7.4 to 420 cSt.
    Body Material
    Steel & Ductile iron rated to 350bar
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