Features & Benefits

    Inline design

    Inline flow allows high pressure drops without noise.

    Adjustable set-point

    Delivers desired differential pressure ensuring accurate balancing.

    Technical description

    Application:

    Heating and cooling systems.
    Installation in supply pipe.

    Functions:

    Differential pressure control
    Pre-setting Δp over the load (ΔpL)

    Dimensions:

    DN 15-125

    Pressure class:

    DN 15-50: PN 25
    DN 65-125: PN 25 / PN 16

    Max. differential pressure (ΔpV):

    1600 kPa = 16 bar

    Setting range:

    Δp over the load is adjustable within:
    5-30 kPa, 10-60 kPa, 10-100 kPa or 60-150 kPa.
    Delivery setting:
    DN 15-50: Maximum value (30, 60, 100 resp. 150 kPa).
    DN 65-125: Midway min./max. value (~18, ~35, ~55 resp. ~105 kPa).

    Temperature:

    Max. working temperature: 150°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: EPDM
    Adjustment ring: DN 15-50 Ryton PPS, DN 65-125 R St 37-2 steel.

    Surface treatment:

    Electrophoretic painting.

    Marking:

    IMI TA, DN, PN, Material, Kvs, Δp and flow direction arrow.

    Connection:

    DN 15-50: Male threads according to ISO 228.
    DN 65-125: Flanges according to EN-1092-2, type 21. Face to face length according to EN 558 series 1.

    Articles

    DN 15-50

    Male thread – Separate connections optional.

    Male threads according to ISO 228.

    Included: Capillary pipe (Ø6) 2 x 1 200 mm, connection set (G1/2+G3/4) for capillary pipe to e.g. STAD and 2 capillary pipe connections R1/4 (R1/8 mounted on valve).

    PN 25

    DN
    d
    L
    L1*
    H1
    H2
    Kvs
    Kg
    EAN
    Article No
    5-30 kPa
    15/20
    G1
    106
    116
    41
    52
    4
    1,5
    3831112505476
    52 763-120
    25/32
    G1 1/4
    125
    150
    51
    57
    12
    2,6
    3831112503953
    52 763-125
    40/50
    G2
    162
    190
    70
    75
    30
    5,8
    3831112504042
    52 763-140
    10-60 kPa
    15/20
    G1
    106
    116
    41
    52
    4
    1,5
    3831112505377
    52 761-120
    25/32
    G1 1/4
    125
    150
    51
    57
    12
    2,6
    3831112504134
    52 761-125
    40/50
    G2
    162
    190
    70
    75
    30
    5,8
    3831112504196
    52 761-140
    10-100 kPa
    15/20
    G1
    106
    116
    41
    52
    4
    1,5
    3831112504189
    52 760-120
    25/32
    G1 1/4
    125
    150
    51
    57
    12
    2,6
    3831112504004
    52 760-125
    40/50
    G2
    162
    190
    70
    75
    30
    5,8
    3831112504103
    52 760-140
    60-150 kPa
    15/20
    G1
    106
    116
    41
    52
    4
    1,5
    3831112504233
    52 762-120
    25/32
    G1 1/4
    125
    150
    51
    57
    12
    2,6
    3831112504141
    52 762-125
    40/50
    G2
    162
    190
    70
    75
    30
    5,8
    3831112504158
    52 762-140

    *) Length incl adjustment ring.


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

    → = Flow direction

    DN 65-125

    Flanges – Do not need any separate connections.

    Flanges according to EN-1092-2, type 21.

    Included: Capillary pipe (Ø6) 2 x 1 500 mm, connection set (G1/2+G3/4) for capillary pipe to e.g. STAD/STAF and 2 capillary pipe connections R1/4 (M14x1 mounted on valve).

    PN 25 (DN 65-80 also fit PN 16 flanges)

    DN
    D
    L
    Kvs
    Kg
    EAN
    Article No
    5-30 kPa
    65
    210
    160
    60
    18
    3831112502635
    52 763-165
    80
    210
    160
    60
    18
    3831112502819
    52 763-180
    100
    320
    254
    150
    58
    3831112502406
    52 763-190
    125
    320
    254
    150
    58
    3831112502444
    52 763-191
    10-60 kPa
    65
    210
    160
    60
    18
    3831112504493
    52 761-165
    80
    210
    160
    60
    18
    3831112504509
    52 761-180
    100
    320
    254
    150
    58
    3831112502390
    52 761-190
    125
    320
    254
    150
    58
    3831112502420
    52 761-191
    10-100 kPa
    65
    210
    160
    60
    18
    3831112504677
    52 760-165
    80
    210
    160
    60
    18
    3831112504684
    52 760-180
    100
    320
    254
    150
    58
    3831112502161
    52 760-190
    125
    320
    254
    150
    58
    3831112502413
    52 760-191
    60-150 kPa
    65
    210
    160
    60
    18
    3831112504516
    52 762-165
    80
    210
    160
    60
    18
    3831112504615
    52 762-180
    100
    320
    254
    150
    58
    3831112505681
    52 762-190
    125
    320
    254
    150
    58
    3831112505865
    52 762-191

    PN 16

    DN
    D
    L
    Kvs
    Kg
    EAN
    Article No
    5-30 kPa
    100
    320
    254
    150
    58
    3831112502482
    52 763-590
    125
    320
    254
    150
    58
    3831112502536
    52 763-591
    10-60 kPa
    100
    320
    254
    150
    58
    3831112502468
    52 761-590
    125
    320
    254
    150
    58
    3831112502512
    52 761-591
    10-100 kPa
    100
    320
    254
    150
    58
    3831112502451
    52 760-590
    125
    320
    254
    150
    58
    3831112502505
    52 760-591
    60-150 kPa
    100
    320
    254
    150
    58
    3831112502499
    52 762-590
    125
    320
    254
    150
    58
    3831112502543
    52 762-591


    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 228.

    With female thread

    Threads according to ISO 228.

    Swivelling nut

    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

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

    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

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

    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

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

    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

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

    Attention! Can be used on the inlet side only.

    With flange

    Attention! Can be used on the inlet side only.

    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).

    Attention! Must be used on the outlet side.

    With flange (extended)

    Attention! Must be used on the outlet side.

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

    d1
    d2
    D
    L1*
    EAN
    Article No
    G1
    M12
    95
    47
    3831112501157
    52 759-615
    G1
    M12
    105
    47
    3831112500136
    52 759-620
    G1 1/4
    M12
    115
    62
    3831112503533
    52 759-625
    G1 1/4
    M16
    140
    62
    3831112526129
    52 759-632
    G2
    M16
    150
    72
    3831112505025
    52 759-640
    G2
    M16
    165
    72
    3831112503892
    52 759-650

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

    Accessories

    Capillary pipe

    Ø6 mm

    2 pcs included in DAF 516.

    L [m]
    Ø
    DN
    EAN
    Article No
    1,2
    6 mm
    15-50
    3831112527157
    52 759-215
    1,5
    6 mm
    65-125
    3831112527164
    52 759-265

    For capillary pipe Ø6 mm with R1/4, R1/8 and M14 connection.

    Capillary pipe connection

    For capillary pipe Ø6 mm with R1/4, R1/8 and M14 connection.

    DN 15-50: 2 pcs R1/4 included in DAF 516 (2 pcs R1/8 mounted on valve).
    DN 65-125: 2 pcs R1/4 included in DAF 516 (2 pcs M14x1 mounted on valve).

    DN
    EAN
    Article No
    6 x R1/4
    15-125
    3831112527355
    52 759-201
    6 x R1/8
    15-32
    3831112533868
    52 759-213
    6 x R1/8
    40-50
    3831112533875
    52 759-218
    6 x M14x1
    65-125
    3831112535145
    52 759-214

    Must be used on STAD when connection of Ø6 mm capillary pipe.

    Connection set STAD

    Must be used on STAD when connection of Ø6 mm capillary pipe.

    2 transition nipples (G1/2 and G3/4), 1 thrust nut (Ø6), 1 cone (Ø6) and 1 support bush are included in DAF 516.

    d
    EAN
    Article No
    G1/2
    7318793850003
    52 762-006
    G3/4
    7318793850102
    52 762-106

    Capillary pipe connection with shut-off

    For connection of Ø6 mm capillary pipe to STAF/STAF-SG.

    d
    D
    For DN
    EAN
    Article No
    G1/4
    6
    20-50
    7318793999504
    52 265-209
    G3/8
    6
    65-400
    7318793999405
    52 265-208

    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

    Brass/EPDM

    Venting screw

    Brass/EPDM

    d
    EAN
    Article No
    M6
    3831112527980
    52 759-211

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    Drawings

    2D3D