Features & Benefits

    Easy handling and installation

    Very low weight and small overall proportions.

    Precise and stable differential pressure control

    Unrivaled accuracy thanks to the new PILOT technology.

    Measuring and system diagnostics

    Unique features to validate and better understand system behavior to minimize energy consumption.

    Technical description

    Application:

    Heating and cooling systems.
    Installation in the return pipe.

    Functions:

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

    Dimensions:

    2 1/2" - 8"

    Pressure class:

    Class 150

    Max. differential pressure (ΔpV):

    174 psi

    Setting range:

    1* - 7 psi
    4* - 21 psi
    12* - 58 psi
    *) Delivery settings

    Leakage rate:

    Tight sealing

    Temperature:

    Max. working temperature:
    - with measuring points, standard: 248 °F
    - with measuring points, double secured: 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
    Pilot extension body: Brass
    Pilot body: AMETAL®
    O-rings: EDPM rubber
    Seat seal: EPDM/Stainless steel
    Plug mechanism: Stainless steel and brass
    Membrane: EPDM rubber
    Springs: Stainless steel
    Screws and nuts: Stainless steel


    AMETAL® is the dezincification resistant alloy of IMI Hydronic Engineering.

    Surface treatment:

    Pilot body: Non treated
    Valve body: Electrophoretic painting.

    Marking:

    TA, IMI, Size, Class, Cvm, Tmin/max, serial number, valve body material and flow direction arrow, label, ΔpL range.
    Colour identification on top of the pilot:
    1 - 7 psi: Blue
    4 - 21 psi: Orange
    12 - 58 psi: Grey
    CE-marking:
    2 1/2" - 5": CE
    6" - 8": CE 1370 *
    *) Notified body.

    Flanges:

    According to ASME/ANSI B16.42 Class 150.

    Articles – Max. 248 °F

    Flanged

    Flanges according ASME/ANSI B16.42 Class 150.

    3.3 ft capillary pipe (Ø0.25"), capillary pipe connection Ø0.25" x R1/4" and capillary pipe connection with shut-off Ø0.25" x G3/8" are included.

    Class 150

    Size
    Number of
    bolt holes
    D
    [in]
    L
    [in]
    H1
    [in]
    H2
    [in]
    Cvm
    qmax
    [gpm]
    lb.
    Article No **
    North America
    Article No
    International
    1 - 7 psi
    2 1/2"
    4
    7.09
    7.48
    10.7
    3.54
    87
    233
    39.7
    23121-2411-065
    23121-2311-065
    3"
    4
    7.52
    7.99
    11.1
    3.78
    127
    343
    46.3
    23121-2411-080
    23121-2311-080
    4"
    8
    9.02
    9.02
    11.9
    4.53
    208
    559
    70.5
    23121-2411-100
    23121-2311-100
    5"
    8
    10
    10
    12.3
    5
    312
    841
    92.6
    23121-2411-125
    23121-2311-125
    6"
    8
    11
    10.5
    13
    5.51
    462
    1246
    123.5
    23121-2411-150
    23121-2311-150
    8"
    8
    13.5
    11.5
    14.2
    6.77
    694
    1867
    183
    23121-2411-200
    23121-2311-200
    4 - 21 psi
    2 1/2"
    4
    7.09
    7.48
    10.7
    3.54
    87
    233
    39.7
    23121-2421-065
    23121-2321-065
    3"
    4
    7.52
    7.99
    11.1
    3.78
    127
    343
    46.3
    23121-2421-080
    23121-2321-080
    4"
    8
    9.02
    9.02
    11.9
    4.53
    208
    559
    70.5
    23121-2421-100
    23121-2321-100
    5"
    8
    10
    10
    12.3
    5
    312
    841
    92.6
    23121-2421-125
    23121-2321-125
    6"
    8
    11
    10.5
    13
    5.51
    462
    1246
    123.5
    23121-2421-150
    23121-2321-150
    8"
    8
    13.5
    11.5
    14.2
    6.77
    694
    1867
    183
    23121-2421-200
    23121-2321-200
    12 - 58 psi
    2 1/2"
    4
    7.09
    7.48
    10.7
    3.54
    87
    233
    39.7
    23121-2431-065
    23121-2331-065
    3"
    4
    7.52
    7.99
    11.1
    3.78
    127
    343
    46.3
    23121-2431-080
    23121-2331-080
    4"
    8
    9.02
    9.02
    11.9
    4.53
    208
    559
    70.5
    23121-2431-100
    23121-2331-100
    5"
    8
    10
    10
    12.3
    5
    312
    841
    92.6
    23121-2431-125
    23121-2331-125
    6"
    8
    11
    10.5
    13
    5.51
    462
    1246
    123.5
    23121-2431-150
    23121-2331-150
    8"
    8
    13.5
    11.5
    14.2
    6.77
    694
    1867
    183
    23121-2431-200
    23121-2331-200


    **) Distributed by Victaulic.

    Cvm = gpm at a pressure drop of 1 psi and maximum opening corresponding to the p-band.

    Articles – Max. 302 °F (double secured measuring points)

    Flanged

    Flanges according ASME/ANSI B16.42 Class 150.

    3.3 ft capillary pipe (Ø0.25"), capillary pipe connection Ø0.25" x R1/4" and capillary pipe connection with shut-off Ø0.25" x G3/8" are included.

    Class 150

    Size
    Number of
    bolt holes
    D
    [in]
    L
    [in]
    H1
    [in]
    H2
    [in]
    Cvm
    qmax
    [gpm]
    lb.
    Article No **
    North America
    Article No
    International
    1 - 7 psi
    2 1/2"
    4
    7.09
    7.48
    10.7
    3.54
    87
    233
    39.7
    23121-2412-065
    23121-2312-065
    3"
    4
    7.52
    7.99
    11.1
    3.78
    127
    343
    46.3
    23121-2412-080
    23121-2312-080
    4"
    8
    9.02
    9.02
    11.9
    4.53
    208
    559
    70.5
    23121-2412-100
    23121-2312-100
    5"
    8
    10
    10
    12.3
    5
    312
    841
    92.6
    23121-2412-125
    23121-2312-125
    6"
    8
    11
    10.5
    13
    5.51
    462
    1246
    123.5
    23121-2412-150
    23121-2312-150
    8"
    8
    13.5
    11.5
    14.2
    6.77
    694
    1867
    183
    23121-2412-200
    23121-2312-200
    4 - 21 psi
    2 1/2"
    4
    7.09
    7.48
    10.7
    3.54
    87
    233
    39.7
    23121-2422-065
    23121-2322-065
    3"
    4
    7.52
    7.99
    11.1
    3.78
    127
    343
    46.3
    23121-2422-080
    23121-2322-080
    4"
    8
    9.02
    9.02
    11.9
    4.53
    208
    559
    70.5
    23121-2422-100
    23121-2322-100
    5"
    8
    10
    10
    12.3
    5
    312
    841
    92.6
    23121-2422-125
    23121-2322-125
    6"
    8
    11
    10.5
    13
    5.51
    462
    1246
    123.5
    23121-2422-150
    23121-2322-150
    8"
    8
    13.5
    11.5
    14.2
    6.77
    694
    1867
    183
    23121-2422-200
    23121-2322-200
    12 - 58 psi
    2 1/2"
    4
    7.09
    7.48
    10.7
    3.54
    87
    233
    39.7
    23121-2432-065
    23121-2332-065
    3"
    4
    7.52
    7.99
    11.1
    3.78
    127
    343
    46.3
    23121-2432-080
    23121-2332-080
    4"
    8
    9.02
    9.02
    11.9
    4.53
    208
    559
    70.5
    23121-2432-100
    23121-2332-100
    5"
    8
    10
    10
    12.3
    5
    312
    841
    92.6
    23121-2432-125
    23121-2332-125
    6"
    8
    11
    10.5
    13
    5.51
    462
    1246
    123.5
    23121-2432-150
    23121-2332-150
    8"
    8
    13.5
    11.5
    14.2
    6.77
    694
    1867
    183
    23121-2432-200
    23121-2332-200


    **) Distributed by Victaulic.

    Cvm = gpm at a pressure drop of 1 psi and maximum opening corresponding to the p-band.

    Additional equipment

    For working area less than Cv = 5.

    Expansion vessel

    For working area less than Cv = 5.

    3.3 ft capillary pipe (Ø0.25"), capillary pipe connection Ø0.25" x R1/4" and capillary pipe connection with shut-off Ø0.25" x G3/8" are included.

    Factory set at 43.5 psi (3 bar).

    H [in]
    D [in]
    EAN
    Article No
    10.8
    3.5
    3831112532052
    23124-2542-001
    Accessories

    Max 248°F (intermittent 302°F)AMETAL®/EPDM

    Measuring point

    Max 248°F (intermittent 302°F)
    AMETAL®/EPDM

    d
    L [in]
    EAN
    Article No
    M14x1
    1.7
    7318792813207
    52 179-014
    M14x1
    4.1
    7318793858108
    52 179-015
    d
    L [in]
    EAN
    Article No
    M14x1
    1.7
    7318792813207
    52 179-014
    M14x1
    4.1
    7318793858108
    52 179-015

    Capillary pipe

    Ø0.25 in.

    1 pc included in TA-PILOT-R.

    L [ft]
    EAN
    Article No
    3.3
    52 759-221

    For capillary pipe Ø0.25 in. with R1/4 connection.

    Capillary pipe connection

    For capillary pipe Ø0.25 in. with R1/4 connection.

    1 pc 0.25xR1/4 included in TA-PILOT-R.

    EAN
    Article No
    0.25" x R1/4"
    52 759-222

    For connection of capillary pipe while permitting simultaneous use of our balancing instrument.

    Measuring point, two-way

    For connection of capillary pipe while permitting simultaneous use of our balancing instrument.

    For connection to existing measuring point on STAF/STAF-SG.

    Can be installed during operation.

    D
    H [in]
    EAN
    Article No
    0.25"
    2.7
    7318794026100
    52 179-207

    Can be installed without draining of the system.AMETAL®/Stainless steel/EPDM

    Measuring point, extension 2.36 in.

    Can be installed without draining of the system.
    AMETAL®/Stainless steel/EPDM

    L [in]
    EAN
    Article No
    2.36
    7318792812804
    52 179-006

    Capillary pipe connection with shut-off

    For replacement of existing measuring point on STAF/STAF-SG.

    52 266-208:

    1 pc G3/8 included in TA-PILOT-R.

    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

    TA-PILOT-R_DN100_w_vessel

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    52759215

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    TA-PILOT-R_DN100

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    231212112100

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    TA-PILOT-R_DN100_kat_w_path

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    52265208

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    52179015

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    52179206

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    Expansion_vessel_TA-PILOT-R

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    231242542001

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    52759201

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