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. (Separate connections with ANSI flanges and UNC threads.)
    DN 65-125: Flanges according to ASME/ANSI B16.42 Class 150.

    Articles

    DN 15-50

    Male thread – Separate connections with NPT threads or ANSI flanges – see "Connections for DN 15-50".

    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.

    DN 65-125

    Flanges – Do not need any separate connections.

    Flanges according to ASME/ANSI B16.42 Class 150.

    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).

    Class 150

    DN
    D
    L
    Kvs
    Kg
    EAN
    Article No
    5-30 kPa
    65
    210
    160
    60
    18
    3831112529885
    52 768-665
    80
    210
    160
    60
    18
    3831112529922
    52 768-680
    100
    320
    254
    150
    58
    3831112529809
    52 768-690
    125
    320
    254
    150
    58
    3831112529847
    52 768-691
    10-60 kPa
    65
    210
    160
    60
    18
    3831112529878
    52 768-765
    80
    210
    160
    60
    18
    3831112529915
    52 768-780
    100
    320
    254
    150
    58
    3831112529793
    52 768-790
    125
    320
    254
    150
    58
    3831112529830
    52 768-791
    10-100 kPa
    65
    210
    160
    60
    18
    3831112529861
    52 768-865
    80
    210
    160
    60
    18
    3831112529908
    52 768-880
    100
    320
    254
    150
    58
    3831112529786
    52 768-890
    125
    320
    254
    150
    58
    3831112529823
    52 768-891
    60-150 kPa
    65
    210
    160
    60
    18
    3831112529892
    52 768-965
    80
    210
    160
    60
    18
    3831112529939
    52 768-980
    100
    320
    254
    150
    58
    3831112529816
    52 768-990
    125
    320
    254
    150
    58
    3831112529854
    52 768-991


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

    → = Flow direction

    Connections for DN 15-50

    Attention! Must be used on the outlet side.

    With ANSI flange (extended)

    Attention! Must be used on the outlet side.

    According to ASME/ANSI B 16.42 Class 150.

    d1
    d2
    D
    L1*
    EAN
    Article No
    G1
    1/2"-13 UNC
    89
    47
    3831112511828
    52 759-915
    G1
    1/2"-13 UNC
    98,5
    47
    3831112511842
    52 759-920
    G1 1/4
    1/2"-13 UNC
    108
    62
    3831112511859
    52 759-925
    G1 1/4
    1/2"-13 UNC
    117,3
    62
    3831112511880
    52 759-932
    G2
    1/2"-13 UNC
    127
    72
    3831112511903
    52 759-940
    G2
    5/8"-11 UNC
    152,4
    72
    3831112511507
    52 759-950

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


    Other types of connections (ISO), see international version of DAF 516.

    Attention! Can be used on the inlet side only.

    With ANSI flange

    Attention! Can be used on the inlet side only.

    According to ASME/ANSI B 16.42 Class 150.

    d1
    d2
    D
    L1*
    EAN
    Article No
    G1
    1/2"-13 UNC
    89
    10
    3831112511811
    52 759-815
    G1
    1/2"-13 UNC
    98,5
    20
    3831112511835
    52 759-820
    G1 1/4
    1/2"-13 UNC
    108
    5
    3831112511866
    52 759-825
    G1 1/4
    1/2"-13 UNC
    117,3
    15
    3831112511873
    52 759-832
    G2
    1/2"-13 UNC
    127
    5
    3831112511897
    52 759-840
    G2
    5/8"-11 UNC
    152,4
    20
    3831112511491
    52 759-850

    Threads according to ANSI/ASME B1.20.1-1983.Swivelling nut

    With female thread NPT

    Threads according to ANSI/ASME B1.20.1-1983.
    Swivelling nut

    d1
    d2
    L1*
    EAN
    Article No
    G1 1/4
    1 NPT
    73
    3831112533394
    52 751-307
    G1 1/4
    1 1/4 NPT
    80
    3831112533400
    52 751-308
    G2
    1 1/2 NPT
    82
    3831112533417
    52 751-309
    G2
    2 NPT
    93
    3831112533424
    52 751-310
    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

    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

    Brass/EPDM

    Venting screw

    Brass/EPDM

    d
    EAN
    Article No
    M6
    3831112527980
    52 759-211

    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

    Drawings