Features & Benefits

    Direct setting scale display

    Low proportional deviation

    Extremely low noise, current efficient construction

    Low friction valve disc center guide

    Highest reaction precision due to an inner setting value spring with generous dimensions

    Technical description

    Applications:

    Heating and cooling systems.

    Function:

    Proportional relief
    Adjustable differential pressure (Δp)

    Dimensions:

    DN 20-32

    Pressure class:

    PN 16

    Setting range:

    50–500 mbar (5-50 kPa).
    Adjusted on the operating side and preset to 200 mbar (20 kPa).
    300-1800 mbar (30-180 kPa).
    Adjusted on the operating side and preset to 300 mbar (30 kPa).

    Recommended max. volume flow (V):

    DN 20: 2,0 m3/h
    DN 25: 3,5 m3/h
    DN 32: 7,0 m3/h

    Max. heat flow (Q):

    at Δt 20 K / 10 K
    DN 20: 46,5 / 23,3 kW
    DN 25: 81,4 / 40,7 kW
    DN 32: 162,8 / 81,4 kW

    Temperature:

    Max. working temperature: 120°C
    Min. working temperature: -10°C

    Materials:

    Body: Corrosion-resistant gunmetal
    O-rings: EPDM
    Valve disc: EPDM
    Spring: Stainless steel
    Valve insert: Brass
    Spindle: Brass
    Handwheel: PA6.6 GF30

    Pipe connection:

    Female thread connections on the incoming side, female thread or flat sealing lockshield on the out going side.
    Threads according to ISO 7/1 (DIN 2999).

    Marking:

    Body: THE, PN, DN and flow direction arrow.
    Handwheel: Heimeier, DN

    Articles – Setting range 50-500 mbar (5-50 kPa)

    Sleeve female thread

    DN
    D
    L
    H
    h
    SW1
    Recommended
    max. volume flow
    V [m3/h]
    EAN
    Article No
    20
    Rp3/4
    40
    85
    32
    32
    2,0
    4024052239511
    5501-03.000
    25
    Rp1
    48
    90
    37
    39
    3,5
    4024052239610
    5501-04.000
    32
    Rp1 1/4
    55
    90
    46
    50
    7,0
    4024052239719
    5501-05.000

    Flat sealing with fitting

    DN
    D
    L
    H
    h
    SW1
    SW2
    SW3
    Recommended
    max. volume flow
    V [m3/h]
    EAN
    Article No
    20
    Rp3/4
    77
    85
    32
    32
    37
    32
    2,0
    4024052240111
    5503-03.000
    25
    Rp1
    90
    90
    37
    39
    47
    41
    3,5
    4024052240210
    5503-04.000
    Articles – Setting range 300-1800 mbar (30-180 kPa)

    Sleeve female thread

    DN
    D
    L
    H
    h
    SW1
    Recommended
    max. volume flow
    V [m3/h]
    EAN
    Article No
    20
    Rp3/4
    40
    85
    32
    32
    2,0
    4024052741519
    5501-13.000
    32
    Rp1 1/4
    55
    90
    46
    50
    7,0
    4024052741717
    5501-15.000

    Beschreibung-Hydrolux

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    5503-03-000-4c-hi

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    5501-04-000-4c-hi

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    Frontpage-Hydrolux

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    5501-13-000

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    Technical specifications

    Installation instructions