Features & Benefits

    Inline design

    Inline flow allows high pressure drops without noise.

    Pneumatic spring

    Allows adjustable set-point from 0 to 16 bar.

    Technical description

    Application:

    Heating and cooling systems with variable flow.

    Function:

    Inline pressure relief valve with pneumatic spring.
    Opens at increasing inlet pressure.

    Dimensions:

    DN 15-125

    Pressure class:

    PN 25 or PN 16 (DN 100-125)

    Max. differential pressure (ΔpV):

    1 600 kPa = 16 bar

    Setting range:

    0-16 bar

    Temperature:

    Max. working temperature: 100°C
    Min. working temperature: -10°C

    Media:

    Water or neutral fluids, water-glycol mixtures (0-57%).

    Material:

    Valve body: Ductile iron EN-GJS-400-15
    Diaphragms and gaskets: NBR, EPDM

    Surface treatment:

    Electrophoretic painting.

    Marking:

    IMI TA, DN, PN, Kvs, material and flow direction arrow.

    Flanges:

    DN 15-50 (optional): According to EN-1092-2:1997, type 16.
    DN 65-125: According to EN-1092-2:1997, type 21.

    Articles

    DN 15-50

    DN
    d
    L
    H1
    H2
    Kvs
    Kg
    EAN
    Article No
    PN 25
    15/20
    G1
    106
    45
    143
    4
    1,0
    3831112505131
    52 766-120
    25/32
    G1 1/4
    125
    55
    161
    12
    1,7
    3831112505148
    52 766-125
    40/50
    G2
    131
    75
    198
    30
    4,4
    3831112505155
    52 766-140


    Kvs = m3/h at a pressure drop of 1 bar and fully open valve.

    → = Flow direction

    DN 65-125

    DN
    D
    L
    H1
    H2
    Kvs
    Kg
    EAN
    Article No
    PN 25 (DN 65 and 80 also fit PN 16 flanges)
    65
    200
    160
    100
    390
    60
    14
    3831112500242
    52 766-165
    80
    200
    160
    100
    390
    60
    14
    3831112504110
    52 766-180
    100
    320
    254
    160
    430
    150
    60
    3831112525818
    52 766-190
    125
    320
    254
    160
    430
    150
    60
    3831112504523
    52 766-191
    PN 16
    100
    320
    254
    160
    430
    150
    60
    3831112505704
    52 766-390
    125
    320
    254
    160
    430
    150
    60
    3831112505711
    52 766-391


    Kvs = m3/h at a pressure drop of 1 bar and fully open valve.

    → = Flow direction

    Connections for DN 15-50

    Threads according to ISO 7Swivelling nut

    With male thread

    Threads according to ISO 7
    Swivelling nut

    d1
    d2
    L1*
    EAN
    Article No
    G1
    R1/2
    34
    3831112500983
    52 759-115
    G1
    R3/4
    40
    3831112500990
    52 759-120
    G1 1/4
    R1
    40
    3831112501003
    52 759-125
    G1 1/4
    R1 1/4
    45
    3831112501010
    52 759-132
    G2
    R1 1/2
    45
    3831112503342
    52 759-140
    G2
    R2
    50
    3831112503472
    52 759-150

    Threads according to ISO 7-1Swivelling nut

    With female thread Rc

    Threads according to ISO 7-1
    Swivelling nut

    d1
    d2
    L1*
    EAN
    Article No
    G1
    Rc1/2
    26
    3831112527454
    52 751-301
    G1
    Rc3/4
    32
    3831112527461
    52 751-302
    G1 1/4
    Rc1
    47
    3831112527478
    52 751-303
    G1 1/4
    Rc1 1/4
    52
    3831112527485
    52 751-304
    G2
    Rc1 1/2
    52
    3831112527492
    52 751-305
    G2
    Rc2
    64,5
    3831112527508
    52 751-306

    Swivelling nut

    For welding

    Swivelling nut

    d1
    D
    L1*
    EAN
    Article No
    G1
    20,8
    37
    3831112500945
    52 759-315
    G1
    26,3
    42
    3831112500952
    52 759-320
    G1 1/4
    33,2
    47
    3831112500969
    52 759-325
    G1 1/4
    40,9
    47
    3831112500976
    52 759-332
    G2
    48,0
    47
    3831112501140
    52 759-340
    G2
    60,0
    52
    3831112501294
    52 759-350

    Flange according to EN-1092-2:1997, type 16.

    With flange

    Flange according to EN-1092-2:1997, type 16.

    d1
    d2
    D
    L1*
    EAN
    Article No
    G1
    M12
    95
    10
    3831112501065
    52 759-515
    G1
    M12
    105
    20
    3831112501072
    52 759-520
    G1 1/4
    M12
    115
    5
    3831112504318
    52 759-525
    G1 1/4
    M16
    140
    15
    3831112501096
    52 759-532
    G2
    M16
    150
    5
    3831112504325
    52 759-540
    G2
    M16
    165
    20
    3831112501317
    52 759-550

    *) Fitting length (from the gasket surface to the end of the connection).

    Threads according to ISO 228.

    With female thread

    Threads according to ISO 228.

    d1
    d2
    L1*
    EAN
    Article No
    G1
    G1/2
    26
    3831112501027
    52 759-015
    G1
    G3/4
    32
    3831112501034
    52 759-020
    G1 1/4
    G1
    47
    3831112501041
    52 759-025
    G1 1/4
    G1 1/4
    52
    3831112501058
    52 759-032
    G2
    G1 1/2
    52
    3831112503489
    52 759-040
    G2
    G2
    64,5
    3831112503205
    52 759-050
    Accessories

    Suitable when insulation is used.Stainless steel/EPDM/Brass.

    Venting extension

    Suitable when insulation is used.
    Stainless steel/EPDM/Brass.

    d
    D
    L
    EAN
    Article No
    M6
    12
    70
    3831112531727
    52 759-220

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    Drawings

    2D3D