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    DWHG10/16/22/25/32 SERIES SOLENOID PILOT OPERATED DIRECTIONAL VALVES

    Short Description:

    DWHG series are solenoid pilot operated spool type valves . This series are used to control the start ,stop and direction of flow.


    Product Detail

    Product Tags

    DWHG series are solenoid pilot operated spool type valves . This series are used to control the start ,stop and direction of flow.

    Size 10 16 22 25 32
    Max operating pressure P.A.B(MPa) 31.5 35 31.5 35 35
    Externally drained T Port (MPa) 31.5 25 25 25 25
    Internally drained T Port (MPa) (AC)-10 (AC)-10 (AC)-10 (AC)-10 (AC)-10
    (DC)-16 (DC)-16 (DC)-16 (DC)-16 (DC)-16
    Externally drained Y Port (MPa) (AC)-10 (AC)-10 (AC)-10 (AC)-10 (AC)-10
    (DC)-16 (DC)-16 (DC)-16 (DC)-16 (DC)-16
    Min. Pilot pressure(MPa) 0.45-1 0.45-1.3 0.45-1 0.45-1 0.45-1
    Max. flow rate(L/min) 160 300 450 650 1100
    Weight(KGS) 6.7 9.5 12 18 38.5
    Valve body(Material)Surface treatment casting phosphating surface
    Oil cleanliness NAS1638 class 9 and ISO4406 class 20/18/15

    Characteristic curves:Type 4DWHG10…(measured with HLP46,Voil=40℃±5℃)

    777

    Characteristic curves:Type 4DWHG16…(measured with HLP46,Voil=40℃±5℃)

    888

    Characteristic curves:Type 4DWHG22…(measured with HLP46,Voil=40℃±5℃)

    999

    Characteristic curves:Type 4DWHG25…(measured with HLP46,Voil=40℃±5℃)

    101010

    Characteristic curves:Type 4DWHG32…(measured with HLP46,Voil=40℃±5℃)

    111111

     

    Spool symbols

    5555

    Pilot fluid supply

    6666

    1、4DWHG10
    (1) Internal pilot and external pilot:The“P”port with M6 screw 3 is external pilot,to convert valve into internal pilot, the M6 screw 3 must be removed.
    (2) Internal drain and external drain:Removing the bolt 1, to install M6 screw 2 is external drain,unscrew the M6 screew 2 is internal drain.

    2、4DWHG16
    (1) Internal pilot and external pilot: Removing the sideward cover, installing the pin to allow “P” port with open position is internal pilot, to convert the pin into “P” port with plugged position is external drain.
    (2) Internal drain and external drain:Removing the bolt 1 and installing M6 screw 2 is external drain, unscrew the M6 screw 2 is internal drain.

    Pilot fluid supply

    7777

    3、4DWHG25
    (1) Internal pilot and external pilot:Removing the sideward cover,installing M6 screw 1 is external pilot,unscrew the M6 screw 2 is internal pilot.
    (2) Internal drain and external drain: Removing the M6 screw 2 in the “T”port on the top of main valve is internal drain, installing the M6 screw 2 is external drain.
    4、4DWHG32
    1、Internal pilot and external pilot:Installing the M6 screw 1 in the“P”port on the top of main valve is external pilot;removing the M6 screw 1 is internal pilot.
    2、Internal drain and external drain:Removing the M6 screw 2 in the“T”port on the top of main valve is external drain;installing the M6 screw 2 is internal drain.
    NOTE : 1.The “X” port on the base plate must be plugged if internal pilot.
    2.The “Y” port on the base plate must be plugged if internal drain.

    4DWHG10 Subplate Installation Dimensions

    8888

    9999

     

    4DWHG16 Subplate Installation Dimensions

    1111111

     

    Valve’s set screw
    4 of M10×60 GB/T70.1-12.9 Tightening torque Ma=75Nm.
    2 of M6×60 GB/T70.1-12.9 Tightening torque Ma=15.5Nm.
    O-ring for P.T.A.B Port: φ26×2.4
    O-ring for X.Y.L Port: φ15×1.9

    4DWHG22 Subplate Installation Dimensions

    222222

     

    Valve’s set screw
    6 of M12×60 GB/T70.1-12.9 Tightening torque Ma=130Nm.
    O-ring for P.T.A.B Port: φ31×3.1
    O-ring for X.Y Port: φ25×3.1

    4DWHG25 Subplate Installation Dimensions

    3333333

    Valve’s set screw
    6 of M12×60 GB/T70.1-12.9 Tightening torque Ma=130Nm.
    O-ring for P.T.A.B Port: φ34×3.1
    O-ring for X.Y Port: φ25×3.1

    4DWHG32 Subplate Installation Dimensions

    1111

    Valve’s set screw
    6 of M20×80 GB/T70.1-2000 12.9 Tightening torque Ma=430Nm.
    O-ring for P.T.A.B Port: φ42×3
    O-ring for X.Y Port: φ19×3

    Installation dimensions

    2222

    3333


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