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:

    1/2" - 5"

    Pressure class:

    1/2"-2": PN 25 (362 psi)
    2 1/2"-5": Class 150

    Max. differential pressure (ΔpV):

    230 psi

    Setting range:

    Δp over the load is adjustable within:
    0.73-4.35 psi, 1.45-8.7 psi, 1.45-14.5 psi, 8.7-22 psi.
    Delivery setting:
    Size 1/2"-2": Maximum value (4.35, 8.7, 14.5, 22 psi).
    Size 2 1/2"-5": Midway min./max. value (~2.61, ~1.02, ~1.45, ~15.2 psi).

    Temperature:

    Max. working temperature: 302°F
    Min. working temperature: 14°F

    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: Size 1/2"-2" Ryton PPS, size 2 1/2"-5" R St 37-2 steel.

    Surface treatment:

    Electrophoretic painting.

    Marking:

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

    Connection:

    Size 1/2" - 2": Male threads according to ISO 228. (Separate connections with ANSI flanges and NPT threads.)
    Size 2 1/2" - 5": Flanges according to ASME/ANSI B16.42 Class 150.

    Articles

    Size 1/2"-2"

    Male thread – Separate connections with NPT threads or ANSI flanges – see Connections for size 1/2"-2".

    Male threads according to ISO 228.

    Included: Capillary pipe (Ø6 mm) 2 x 4 ft, 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).

    Size
    d
    L
    L1*
    H1
    H2
    Cvs
    lb.
    EAN
    Article No
    1-4 psi
    1/2" / 3/4"
    G1
    4,2
    4,6
    1,6
    3,1
    4,6
    3,3
    3831112505476
    52 763-120
    1" / 1 1/4"
    G1 1/4
    4,9
    5,9
    2,0
    3,3
    13,9
    5,7
    3831112503953
    52 763-125
    1 1/2" / 2"
    G2
    6,4
    7,5
    2,8
    4,0
    34,7
    12,8
    3831112504042
    52 763-140
    4-9 psi
    1/2" / 3/4"
    G1
    4,2
    4,6
    1,6
    3,1
    4,6
    3,3
    3831112505377
    52 761-120
    1" / 1 1/4"
    G1 1/4
    4,9
    5,9
    2,0
    3,3
    13,9
    5,7
    3831112504134
    52 761-125
    1 1/2" / 2"
    G2
    6,4
    7,5
    2,8
    4,0
    34,7
    12,8
    3831112504196
    52 761-140
    4-15 psi
    1/2" / 3/4"
    G1
    4,2
    4,6
    1,6
    3,1
    4,6
    3,3
    3831112504189
    52 760-120
    1" / 1 1/4"
    G1 1/4
    4,9
    5,9
    2,0
    3,3
    13,9
    5,7
    3831112504004
    52 760-125
    1 1/2" / 2"
    G2
    6,4
    7,5
    2,8
    4,0
    34,7
    12,8
    3831112504103
    52 760-140
    9-21 psi
    1/2" / 3/4"
    G1
    4,2
    4,6
    1,6
    3,1
    4,6
    3,3
    3831112504233
    52 762-120
    1" / 1 1/4"
    G1 1/4
    4,9
    5,9
    2,0
    3,3
    13,9
    5,7
    3831112504141
    52 762-125
    1 1/2" / 2"
    G2
    6,4
    7,5
    2,8
    4,0
    34,7
    12,8
    3831112504158
    52 762-140

    *) Length incl adjustment ring.

    2 1/2" - 5"

    Flanges – Do not need any separate connections.

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

    Included: Capillary pipe (Ø6 mm) 2 x 5 ft. and 2 capillary pipe connections R1/4 (M14x1 mounted on valve).

    Size
    D
    L
    Cvs
    lb.
    EAN
    Article No
    1-4 psi
    2 1/2"
    8,3
    6,3
    69,4
    39,7
    3831112529885
    52 768-665
    3"
    8,3
    6,3
    69,4
    39,7
    3831112529922
    52 768-680
    4"
    12,6
    10
    173,4
    127,9
    3831112529809
    52 768-690
    5"
    12,6
    10
    173,4
    127,9
    3831112529847
    52 768-691
    4-9 psi
    2 1/2"
    8,3
    6,3
    69,4
    39,7
    3831112529878
    52 768-765
    3"
    8,3
    6,3
    69,4
    39,7
    3831112529915
    52 768-780
    4"
    12,6
    10
    173,4
    127,9
    3831112529793
    52 768-790
    5"
    12,6
    10
    173,4
    127,9
    3831112529830
    52 768-791
    4-15 psi
    2 1/2"
    8,3
    6,3
    69,4
    39,7
    3831112529861
    52 768-865
    3"
    8,3
    6,3
    69,4
    39,7
    3831112529908
    52 768-880
    4"
    12,6
    10
    173,4
    127,9
    3831112529786
    52 768-890
    5"
    12,6
    10
    173,4
    127,9
    3831112529823
    52 768-891
    9-21 psi
    2 1/2"
    8,3
    6,3
    69,4
    39,7
    3831112529892
    52 768-965
    3"
    8,3
    6,3
    69,4
    39,7
    3831112529939
    52 768-980
    4"
    12,6
    10
    173,4
    127,9
    3831112529816
    52 768-990
    5"
    12,6
    10
    173,4
    127,9
    3831112529854
    52 768-991


    Cvs = gpm at a pressure drop of 1 psi and fully open valve.

    → = Flow direction

    Connections for size 1/2"-2"

    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* [in]
    EAN
    Article No
    G1 1/4
    1 NPT
    2.87
    3831112533394
    52 751-307
    G1 1/4
    1 1/4 NPT
    3.15
    3831112533400
    52 751-308
    G2
    1 1/2 NPT
    3.23
    3831112533417
    52 751-309
    G2
    2 NPT
    3.66
    3831112533424
    52 751-310

    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 [in]
    L1* [in]
    EAN
    Article No
    G1
    1/2"-13 UNC
    3.50
    0.394
    3831112511811
    52 759-815
    G1
    1/2"-13 UNC
    3.88
    0.787
    3831112511835
    52 759-820
    G1 1/4
    1/2"-13 UNC
    4.25
    0.197
    3831112511866
    52 759-825
    G1 1/4
    1/2"-13 UNC
    4.62
    0.591
    3831112511873
    52 759-832
    G2
    1/2"-13 UNC
    5.00
    0.197
    3831112511897
    52 759-840
    G2
    5/8"-11 UNC
    6.00
    0.787
    3831112511491
    52 759-850

    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 [in]
    L1* [in]
    EAN
    Article No
    G1
    1/2"-13 UNC
    3.50
    1.85
    3831112511828
    52 759-915
    G1
    1/2"-13 UNC
    3.88
    1.85
    3831112511842
    52 759-920
    G1 1/4
    1/2"-13 UNC
    4.25
    2.44
    3831112511859
    52 759-925
    G1 1/4
    1/2"-13 UNC
    4.62
    2.44
    3831112511880
    52 759-932
    G2
    1/2"-13 UNC
    5.00
    2.83
    3831112511903
    52 759-940
    G2
    5/8"-11 UNC
    6.00
    2.83
    3831112511507
    52 759-950

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

    Accessories

    Capillary pipe

    Ø6 mm

    2 pcs included in DAF 516.

    L [ft]
    Ø
    Valve size
    EAN
    Article No
    4
    6 mm
    1/2" - 2"
    3831112527157
    52 759-215
    5
    6 mm
    2 1/2" - 5"
    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.

    1/2” - 2”: 2 pcs R1/4 included in DAF 516 (2 pcs R1/8 mounted on valve).
    2 1/2” - 5”: 2 pcs R1/4 included in DAF 516 (2 pcs M14x1 mounted on valve).

    Valve size
    EAN
    Article No
    6 mm x R1/4
    2 1/2" - 5"
    3831112527355
    52 759-201
    6 mm x R1/8
    1/2" - 1 1/4"
    3831112533868
    52 759-213
    6 mm x R1/8
    1 1/2" - 2"
    3831112533875
    52 759-218
    6 mm x M14x1
    2 1/2" - 5"
    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, DN 15-50 (sizes 1/2" - 2").

    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
    Valve size
    EAN
    Article No
    G1/4
    6 mm
    3/4" - 2"
    7318793999504
    52 265-209
    G3/8
    6 mm
    2 1/2" - 16"
    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 [in]
    L [in]
    EAN
    Article No
    M6
    0.47
    2.76
    3831112531727
    52 759-220

    Brass/EPDM

    Venting screw

    Brass/EPDM

    d
    EAN
    Article No
    M6
    3831112527980
    52 759-211

    DAF516_DN80_CAD

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    Drawings

    2D3D