Features & Benefits

    Inline design

    Inline flow allows high pressure drops without noise.

    Adjustable set-point

    Delivers desired differential pressure ensuring accurate balancing.

    Measuring point

    Simplifies the balancing procedure, increases its accuracy and enables troubleshooting.

    Technical description

    Application:

    Heating and cooling systems with variable flow.
    Installation in return pipe.

    Functions:

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

    Dimensions:

    1/2" - 6"

    Pressure class:

    Size 1/2" - 2": PN 25 (360 psi)
    Size 2 1/2" - 6": 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:
    Maximum value (4.35, 8.7, 14.5, 22 psi).

    Temperature:

    Max. working temperature:
    - with measuring points: 248 °F
    - without measuring points: 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: Ryton PPS

    Surface treatment:

    Electrophoretic painting.

    Marking:

    IMI TA, Size, PN, Material, Cvs, Δp and flow direction arrow.

    Threads:

    DN 15-50: According to ISO 228.

    Separate connections (NPT threaded/ANSI flanged) available.

    Flanges:

    According to ASME/ANSI B16.42 Class 150.

    DA 516 – With measuring points (max. 248 °F)

    Threads according to ISO 228.

    Male thread

    Threads according to ISO 228.

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

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

    Size
    d
    L
    L1*
    H1
    H2
    Cvs
    Weight
    [lb]
    EAN
    Article No
    1-4 psi
    1/2" / 3/4"
    G1
    4.2
    4.6
    1.6
    3.3
    4.6
    3.3
    3831112507111
    52 795-020
    1" / 1 1/4"
    G1 1/4
    4.9
    5.9
    2.0
    3.9
    13.9
    5.7
    3831112507159
    52 795-025
    1 1/2" / 2"
    G2
    6.4
    7.5
    2.8
    4.3
    34.7
    12.8
    3831112507197
    52 795-040
    4-9 psi
    1/2" / 3/4"
    G1
    4.2
    4.6
    1.6
    3.3
    4.6
    3.3
    3831112507104
    52 795-120
    1" / 1 1/4"
    G1 1/4
    4.9
    5.9
    2.0
    3.9
    13.9
    5.7
    3831112507142
    52 795-125
    1 1/2" / 2"
    G2
    6.4
    7.5
    2.8
    4.3
    34.7
    12.8
    3831112507180
    52 795-140
    4-15 psi
    1/2" / 3/4"
    G1
    4.2
    4.6
    1.6
    3.3
    4.6
    3.3
    3831112507098
    52 795-220
    1" / 1 1/4"
    G1 1/4
    4.9
    5.9
    2.0
    3.9
    13.9
    5.7
    3831112507135
    52 795-225
    1 1/2" / 2"
    G2
    6.4
    7.5
    2.8
    4.3
    34.7
    12.8
    3831112507173
    52 795-240
    9-21 psi
    1/2" / 3/4"
    G1
    4.2
    4.6
    1.6
    3.3
    4.6
    3.3
    3831112507128
    52 795-320
    1" / 1 1/4"
    G1 1/4
    4.9
    5.9
    2.0
    3.9
    13.9
    5.7
    3831112507166
    52 795-325
    1 1/2" / 2"
    G2
    6.4
    7.5
    2.8
    4.3
    34.7
    12.8
    3831112507203
    52 795-340

    *) Length incl adjustment ring.


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

    → = Flow direction

    DA 516 – Without measuring points (max. 302 °F)

    Threads according to ISO 228.

    Male thread

    Threads according to ISO 228.

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

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

    Size
    d
    L
    L1*
    H1
    H2
    Cvs
    Weight
    [lb]
    EAN
    Article No
    1-4 psi
    1/2" / 3/4"
    G1
    4.2
    4.6
    1.6
    2.2
    4.6
    3.3
    3831112528468
    52 752-720
    1" / 1 1/4"
    G1 1/4
    4.9
    5.9
    2.0
    2.8
    13.9
    5.7
    3831112528659
    52 752-725
    1 1/2" / 2"
    G2
    6.4
    7.5
    2.8
    3.2
    34.7
    12.8
    3831112528697
    52 752-740
    4-9 psi
    1/2" / 3/4"
    G1
    4.2
    4.6
    1.6
    2.2
    4.6
    3.3
    3831112528451
    52 754-620
    1" / 1 1/4"
    G1 1/4
    4.9
    5.9
    2.0
    2.8
    13.9
    5.7
    3831112528642
    52 754-625
    1 1/2" / 2"
    G2
    6.4
    7.5
    2.8
    3.2
    34.7
    12.8
    3831112528680
    52 754-640
    4-15 psi
    1/2" / 3/4"
    G1
    4.2
    4.6
    1.6
    2.2
    4.6
    3.3
    3831112528444
    52 760-320
    1" / 1 1/4"
    G1 1/4
    4.9
    5.9
    2.0
    2.8
    13.9
    5.7
    3831112528635
    52 760-325
    1 1/2" / 2"
    G2
    6.4
    7.5
    2.8
    3.2
    34.7
    12.8
    3831112528673
    52 760-340
    9-21 psi
    1/2" / 3/4"
    G1
    4.2
    4.6
    1.6
    2.2
    4.6
    3.3
    3831112528475
    52 760-920
    1" / 1 1/4"
    G1 1/4
    4.9
    5.9
    2.0
    2.8
    13.9
    5.7
    3831112528666
    52 760-925
    1 1/2" / 2"
    G2
    6.4
    7.5
    2.8
    3.2
    34.7
    12.8
    3831112528703
    52 760-940

    *) Length incl adjustment ring.


    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

    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

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

    Capillary pipe connection

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

    1 pc R1/4 included in DA 516 (R1/8 mounted on valve)

    Valve size
    EAN
    Article No
    6 mm x R1/4
    1/2" - 2"
    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

    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

    Capillary pipe

    Ø6 mm

    1 pc included in DA 516.

    L [ft]
    Ø
    EAN
    Article No
    4
    6 mm
    3831112527157
    52 759-215

    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 and 1 support bush are included in DA 516.

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

    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

    Brass/EPDM

    Venting screw

    Brass/EPDM

    d
    EAN
    Article No
    M6
    3831112527980
    52 759-211

    For connection of Ø6 mm copper pipe while permitting simultaneous use of our balancing instrument.

    Measuring point, two-way

    For connection of Ø6 mm copper pipe while permitting simultaneous use of our balancing instrument.

    D
    H [in]
    EAN
    Article No
    6 mm
    2.68
    7318793848703
    52 179-206

    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