Features & Benefits

    Easy selection, broad product portfolio

    DSV...DGH valves can be supplied from 1,0 to 25 bar in 0,1 bar increments. Special versions in other materials such as stainless steel, or with a thermal resistance of up to 400°C, are available upon request.

    According to standards

    All valves are TÜV type approved and comply with the standards listed under Approvals.

    High blow off rates

    Enhanced lift and capacity thanks to a special valve construction.

    Cleaning of seat possible

    A fully detachable bonnet allows for easy cleaning of the gasket while leaving valve settings unchanged.

    Technical description

    Applications:

    Heating, cooling and solar systems for building technology and industrial applications.
    Concrete examples:
    - Condensing boiler systems
    - Steam and industrial boiler systems
    - Cold water and chiller systems
    - Heat pump systems
    - Biogas plants
    - District heating transfer stations and building sub-stations
    - Installations according to EN 12828, SWKI HE301-01
    - SWKI HE301-01 allows safety valves with DGH and DGF approval

    Functions:

    Protection of the maximum pressure on heat generators and systems.

    Dimensions:

    DN 15-50

    Temperature:

    Max. admissible temperature, TS:
    DSV...H, DSV...DGH: 120°C 1)
    DSV...SOL: 160°C
    DSV...DGF: 200°C
    DSV...F: 150°C
    1) Materials are suitable for temperatures up to 160°C during the blow-off process.
    Min. admissible temperature, TSmin:
    DSV...H, DGH, SOL: -10°C
    DSV...DGF, DSV...F : -50°C

    Media:

    DSV...H: Addition of antifreeze agent up to 30%.
    DSV...DGH, DSV...DGF: Addition of antifreeze agent up to 50%.
    DSV...F: Addition of antifreeze agent up to 100%.

    Material:

    DSV...H, DSV...F, DSV...SOL:
    Body: gunmetal. Internal parts: Brass. Spring: Spring steel with anti-rust protection.
    DSV...DGH:
    Body: gunmetal. Internal parts: Brass. Spring: Stainless steel.
    DSV...DGH Flanges (DN 40-50):
    Nodular graphite iron GGG, Colour beryllium.
    DSV...DGF:
    Body: gunmetal. Internal dry parts: Brass. Internal wetted parts: stainless steel. Spring: stainless steel.

    Approvals:

    All safety valves featured in this datasheet have been officially certified and approved (D=Steam, G=Gases, H=Heating, SOL=Solar, F=Fluids). For details such as certificate numbers please refer to the applicable Declaration of Conformity.

    Safety valves with sole approval code letters F, H, SOL are not allowed for installations according to SWKI HE301-01. Safety valves of the approval type DGF and DGH are to be used here.

    Warranty:

    5-year warranty

    Pressure:

    DSV...H:
    Max. admissible pressure, PS: 3 bar
    Min. admissible pressure, PSmin: 0 bar
    DSV...DGH (DN 15-32):
    Max. admissible pressure, PS: 25 bar
    Min. admissible pressure, PSmin: 0 bar
    DSV...DGH Flanges (DN 40-50), DSV...F:
    Max. admissible pressure, PS: 16 bar
    Min. admissible pressure, PSmin: 0 bar
    DSV...DGF:
    Max. admissible pressure, PS: 25 bar
    Min. admissible pressure, PSmin: 0 bar
    DSV...SOL:
    Max. admissible pressure, PS: 10 bar
    Min. admissible pressure, PSmin: 0 bar

    Accuracy:

    DSV...H:
    Closing pressure tolerance: 0,5 bar
    Open pressure tolerance: 0,5 bar
    Selectable valves: psv = 2.5 and 3.0 bar
    DSV...DGH:
    Closing pressure tolerance: psv · 0,1 bar
    Open pressure tolerance: psv · 0,1 bar
    Selectable valves: psv from 1,0 to 25 bar in 0,5 bar (standard) and 0.1 bar (on request) increments.

    DSV...SOL:
    Closing pressure tolerance: psv · 0,2 bar and > 0,6 bar
    Open pressure tolerance: psv · 0,1 bar and > 0,5 bar
    Selectable valves: psv = 2, 3, 4, 6, 8 and 10 bar
    DSV...F:
    Closing pressure tolerance: psv · 0,2 bar and > 0,6 bar
    Open pressure tolerance: psv · 0,1 bar and > 0,1 bar
    Selectable valves: psv from 3 to 10 bar in 1,0 bar increments.
    DSV...DGF:
    Closing pressure tolerance: psv · 0,1 bar
    Open pressure tolerance: psv · 0,1 bar
    Selectable valves: psv from 1,0 to 16 bar in 0,5 bar (standard) and 0,1 bar (on request) increments.

    Articles

    Spring-loaded, can be vented manually, spring compartment protected by diaphragms.Inlet and outlet side with female thread, outlet side increased.Vertical installation.

    Safety valve DSV...H

    Spring-loaded, can be vented manually, spring compartment protected by diaphragms.
    Inlet and outlet side with female thread, outlet side increased.
    Vertical installation.

    Type
    psv
    [bar]
    QNsvV
    [kW]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DN 15
    DSV 15-3.0 H
    3,0
    50
    70
    28
    34
    0,3
    G1/2
    G3/4
    7640148634816
    537 1030
    DN 20
    DSV 20-3.0 H
    3,0
    100
    65
    34
    40
    0,45
    G3/4
    G1
    7640161632486
    537 2030
    DN 25
    DSV 25-3.0 H
    3,0
    200
    75
    41
    45
    0,75
    G1
    G1 1/4
    7640148634854
    537 3030
    DN 32
    DSV 32-3.0 H
    3,0
    350
    85
    47
    55
    1,1
    G1 1/4
    G1 1/2
    7640161632493
    537 4030
    DN 40
    DSV 40-3.0 H
    3,0
    600
    155
    54
    62
    2,2
    G1 1/2
    G2
    7640148634892
    537 5030
    DN 50
    DSV 50-3.0 H
    3,0
    900
    185
    65
    75
    3,2
    G2
    G2 1/2
    7640148634915
    537 6030

    Spring loaded, with manual blow off lever, spring chamber is bellow sealed, pressure balanced.Inlet and outlet side with female thread, outlet side increased.Vertical installation.

    Safety valve DSV...DGH

    Spring loaded, with manual blow off lever, spring chamber is bellow sealed, pressure balanced.
    Inlet and outlet side with female thread, outlet side increased.
    Vertical installation.

    DN 15

    Type*
    psv
    [bar]
    QNsvV
    [kW]
    QNsvW
    [MW]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV 15-2.0 DGH
    2,0
    68
    3,6
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632509
    536 1020
    DSV 15-2.5 DGH
    2,5
    79
    4,0
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632516
    536 1025
    DSV 15-3.0 DGH
    3,0
    89
    4,4
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632523
    536 1030
    DSV 15-3.5 DGH
    3,5
    99
    4,7
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632530
    536 1035
    DSV 15-4.0 DGH
    4,0
    109
    5,0
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632547
    536 1040
    DSV 15-4.5 DGH
    4,5
    119
    5,3
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632554
    536 1045
    DSV 15-5.0 DGH
    5,0
    129
    5,6
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632561
    536 1050
    DSV 15-5.5 DGH
    5,5
    139
    5,9
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632578
    536 1055
    DSV 15-6.0 DGH
    6,0
    149
    6,2
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632585
    536 1060
    DSV 15-7.0 DGH
    7,0
    168
    6,6
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632608
    536 1070
    DSV 15-8.0 DGH
    8,0
    187
    7,1
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632622
    536 1080
    DSV 15-9.0 DGH
    9,0
    206
    7,5
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632646
    536 1090
    DSV 15-10.0 DGH
    10,0
    225
    7,9
    91
    30
    40
    0,4
    G1/2
    G1
    7640161632660
    536 1100

    DN 20

    Type*
    psv
    [bar]
    QNsvV
    [kW]
    QNsvW
    [MW]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV 20-2.0 DGH
    2,0
    152
    10,4
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640153584090
    536 2020
    DSV 20-2.5 DGH
    2,5
    182
    11,6
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632677
    536 2025
    DSV 20-3.0 DGH
    3,0
    210
    12,7
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632684
    536 2030
    DSV 20-3.5 DGH
    3,5
    234
    13,7
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632691
    536 2035
    DSV 20-4.0 DGH
    4,0
    258
    14,7
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632707
    536 2040
    DSV 20-4.5 DGH
    4,5
    282
    15,6
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632714
    536 2045
    DSV 20-5.0 DGH
    5,0
    305
    16,4
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632721
    536 2050
    DSV 20-5.5 DGH
    5,5
    329
    17,2
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632738
    536 2055
    DSV 20-6.0 DGH
    6,0
    352
    18,0
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632745
    536 2060
    DSV 20-7.0 DGH
    7,0
    397
    19,4
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632769
    536 2070
    DSV 20-8.0 DGH
    8,0
    442
    20,8
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632783
    536 2080
    DSV 20-9.0 DGH
    9,0
    487
    22,0
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632806
    536 2090
    DSV 20-10.0 DGH
    10,0
    530
    23,2
    158
    39
    43
    1,0
    G3/4
    G1 1/4
    7640161632820
    536 2100

    DN 25

    Type*
    psv
    [bar]
    QNsvV
    [kW]
    QNsvW
    [MW]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV 25-2.0 DGH
    2,0
    236
    17
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635028
    536 3020
    DSV 25-2.5 DGH
    2,5
    277
    19
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635073
    536 3025
    DSV 25-3.0 DGH
    3,0
    320
    21
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635127
    536 3030
    DSV 25-3.5 DGH
    3,5
    357
    22
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635172
    536 3035
    DSV 25-4.0 DGH
    4,0
    393
    24
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635226
    536 3040
    DSV 25-4.5 DGH
    4,5
    430
    25
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635271
    536 3045
    DSV 25-5.0 DGH
    5,0
    465
    27
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635325
    536 3050
    DSV 25-5.5 DGH
    5,5
    501
    28
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635370
    536 3055
    DSV 25-6.0 DGH
    6,0
    537
    29
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635424
    536 3060
    DSV 25-7.0 DGH
    7,0
    605
    32
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635523
    536 3070
    DSV 25-8.0 DGH
    8,0
    674
    34
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635622
    536 3080
    DSV 25-9.0 DGH
    9,0
    742
    36
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635721
    536 3090
    DSV 25-10.0 DGH
    10,0
    808
    38
    192
    45
    50
    1,8
    G1
    G1 1/2
    7640148635820
    536 3100

    DN 32

    Type*
    psv
    [bar]
    QNsvV
    [kW]
    QNsvW
    [MW]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV 32-2.0 DGH
    2,0
    401
    29
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148635936
    536 4020
    DSV 32-2.5 DGH
    2,5
    481
    33
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148635981
    536 4025
    DSV 32-3.0 DGH
    3,0
    555
    36
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636032
    536 4030
    DSV 32-3.5 DGH
    3,5
    619
    39
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636087
    536 4035
    DSV 32-4.0 DGH
    4,0
    682
    42
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636131
    536 4040
    DSV 32-4.5 DGH
    4,5
    746
    44
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636186
    536 4045
    DSV 32-5.0 DGH
    5,0
    808
    47
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636230
    536 4050
    DSV 32-5.5 DGH
    5,5
    870
    49
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636285
    536 4055
    DSV 32-6.0 DGH
    6,0
    931
    51
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636339
    536 4060
    DSV 32-7.0 DGH
    7,0
    1051
    55
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636438
    536 4070
    DSV 32-8.0 DGH
    8,0
    1170
    59
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636537
    536 4080
    DSV 32-9.0 DGH
    9,0
    1287
    62
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636636
    536 4090
    DSV 32-10.0 DGH
    10,0
    1402
    66
    264
    55
    61
    4,0
    G1 1/4
    G2
    7640148636735
    536 4100

    Spring loaded, with manual blow-off lever, spring chamber is bellow sealed.Inlet and outlet with flanged connections and increased outlet size.Vertical installation.

    Safety valve DSV...DGH

    Spring loaded, with manual blow-off lever, spring chamber is bellow sealed.
    Inlet and outlet with flanged connections and increased outlet size.
    Vertical installation.

    DN 40

    Type*
    psv
    [bar]
    QNsvV
    [kW]
    QNsvW
    [MW]
    H
    h
    L
    m
    [kg]
    Sin
    PN40
    Sout
    PN16
    EAN
    Article No
    DSV 40-3.0 DGH
    3,0
    1040
    55
    345
    140
    115
    17,0
    DN40
    DN65
    7640148636940
    536 5030
    DSV 40-3.5 DGH
    3,5
    1160
    59
    345
    140
    115
    17,0
    DN40
    DN65
    7640148636995
    536 5035
    DSV 40-4.0 DGH
    4,0
    1280
    63
    345
    140
    115
    17,0
    DN40
    DN65
    7640148637046
    536 5040
    DSV 40-4.5 DGH
    4,5
    1400
    67
    345
    140
    115
    17,0
    DN40
    DN65
    7640148637091
    536 5045
    DSV 40-5.0 DGH
    5,0
    1510
    71
    345
    140
    115
    17,0
    DN40
    DN65
    7640148637145
    536 5050
    DSV 40-5.5 DGH
    5,5
    1625
    74
    345
    140
    115
    17,0
    DN40
    DN65
    7640148637190
    536 5055
    DSV 40-6.0 DGH
    6,0
    1740
    77
    345
    140
    115
    17,0
    DN40
    DN65
    7640148637244
    536 5060
    DSV 40-7.0 DGH
    7,0
    1965
    84
    345
    140
    115
    17,0
    DN40
    DN65
    7640148637343
    536 5070
    DSV 40-8.0 DGH
    8,0
    2190
    89
    345
    140
    115
    17,0
    DN40
    DN65
    7640148637442
    536 5080
    DSV 40-9.0 DGH
    9,0
    2400
    95
    345
    140
    115
    17,0
    DN40
    DN65
    7640148637541
    536 5090
    DSV 40-10.0 DGH
    10,0
    2620
    100
    345
    140
    115
    17,0
    DN40
    DN65
    7640148637640
    536 5100

    DN 50

    Type*
    psv
    [bar]
    QNsvV
    [kW]
    QNsvW
    [MW]
    H
    h
    L
    m
    [kg]
    Sin
    PN40
    Sout
    PN16
    EAN
    Article No
    DSV 50-3.0 DGH
    3,0
    1600
    85
    345
    150
    120
    19,0
    DN50
    DN80
    7640148637855
    536 6030
    DSV 50-3.5 DGH
    3,5
    1790
    91
    345
    150
    120
    19,0
    DN50
    DN80
    7640148637909
    536 6035
    DSV 50-4.0 DGH
    4,0
    1980
    98
    345
    150
    120
    19,0
    DN50
    DN80
    7640148637954
    536 6040
    DSV 50-4.5 DGH
    4,5
    2160
    104
    345
    150
    120
    19,0
    DN50
    DN80
    7640148638005
    536 6045
    DSV 50-5.0 DGH
    5,0
    2330
    109
    345
    150
    120
    19,0
    DN50
    DN80
    7640148638050
    536 6050
    DSV 50-5.5 DGH
    5,5
    2510
    114
    345
    150
    120
    19,0
    DN50
    DN80
    7640148638104
    536 6055
    DSV 50-6.0 DGH
    6,0
    2680
    120
    345
    150
    120
    19,0
    DN50
    DN80
    7640148638159
    536 6060
    DSV 50-7.0 DGH
    7,0
    3030
    129
    345
    150
    120
    19,0
    DN50
    DN80
    7640148638258
    536 6070
    DSV 50-8.0 DGH
    8,0
    3370
    138
    345
    150
    120
    19,0
    DN50
    DN80
    7640148638357
    536 6080
    DSV 50-9.0 DGH
    9,0
    3710
    146
    345
    150
    120
    19,0
    DN50
    DN80
    7640148638456
    536 6090
    DSV 50-10.0 DGH
    10,0
    4040
    154
    345
    150
    120
    19,0
    DN50
    DN80
    7640148638555
    536 6100

    Spring-loaded, can be vented manually, spring compartment protected by diaphragms.Inlet and outlet side with female thread, outlet side increased.Vertical installation.The valves are made entirely of metal and can withstand high environmental or radiation temperatures. All materials are suitable for max. temperatures up to 160°C.For intrinsically safe solar systems (max. 120 °C).TÜV-CE Type test approval xx-2013 SOL. In accordance with TRD 721, DIN 4757 and DIN EN 12976.

    Safety valve DSV...SOL for solar applications

    Spring-loaded, can be vented manually, spring compartment protected by diaphragms.
    Inlet and outlet side with female thread, outlet side increased.
    Vertical installation.
    The valves are made entirely of metal and can withstand high environmental or radiation temperatures.
    All materials are suitable for max. temperatures up to 160°C.

    For intrinsically safe solar systems (max. 120 °C).
    TÜV-CE Type test approval xx-2013 SOL. In accordance with TRD 721, DIN 4757 and DIN EN 12976.

    Type*
    psv
    [bar]
    QNsvV
    [kW]
    Collector
    [m2]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DN 15
    DSV 15-3.0 SOL
    3,0
    50
    50
    70
    28
    34
    0,3
    G1/2
    G3/4
    7640161633179
    301051-10430
    DSV 15-4.0 SOL
    4,0
    50
    50
    70
    28
    34
    0,3
    G1/2
    G3/4
    7640161633186
    301051-10440
    DSV 15-6.0 SOL
    6,0
    50
    50
    70
    28
    34
    0,3
    G1/2
    G3/4
    7640161633193
    301051-10460
    DSV 15-8.0 SOL
    8,0
    50
    50
    70
    28
    34
    0,3
    G1/2
    G3/4
    7640161633209
    301051-10480
    DSV 15-10.0 SOL
    10,0
    50
    50
    70
    28
    34
    0,3
    G1/2
    G3/4
    7640161633216
    301051-10410
    DN 20
    DSV 20-3.0 SOL
    3,0
    100
    100
    65
    34
    40
    0,5
    G3/4
    G1
    7640161633223
    301051-10530
    DSV 20-4.0 SOL
    4,0
    100
    100
    65
    34
    40
    0,5
    G3/4
    G1
    7640161633230
    301051-10540
    DSV 20-6.0 SOL
    6,0
    100
    100
    65
    34
    40
    0,5
    G3/4
    G1
    7640161633247
    301051-10560
    DSV 20-8.0 SOL
    8,0
    100
    100
    65
    34
    40
    0,5
    G3/4
    G1
    7640161633254
    301051-10580
    DSV 20-10.0 SOL
    10,0
    100
    100
    65
    34
    40
    0,5
    G3/4
    G1
    7640161633261
    301051-10510
    DN 25
    DSV 25-3.0 SOL
    3,0
    200
    200
    75
    41
    45
    0,75
    G1
    G1 1/4
    7640161633278
    301051-10630
    DSV 25-4.0 SOL
    4,0
    200
    200
    75
    41
    45
    0,75
    G1
    G1 1/4
    7640161633285
    301051-10640
    DSV 25-6.0 SOL
    6,0
    200
    200
    75
    41
    45
    0,75
    G1
    G1 1/4
    7640161633292
    301051-10660
    DSV 25-8.0 SOL
    8,0
    200
    200
    75
    41
    45
    0,75
    G1
    G1 1/4
    7640161633308
    301051-10680
    DSV 25-10.0 SOL
    10,0
    200
    200
    75
    41
    45
    0,75
    G1
    G1 1/4
    7640161633315
    301051-10610

    For the protection of:- cooling plants and closed cooling circuits - pressure tanks/-systems for water and cooling liquids with glycol content of up to 100 % The temperature of the medium under atmospheric pressure must not reach boiling point.Spring-loaded, can be vented manually, spring compartment protected by diaphragms.Inlet and outlet side with female thread.Vertical installation.The valves are made entirely of metal and can withstand high environmental or radiation temperatures. All materials are suitable for max. temperatures up to 150°C.TÜV - Approval 293 F.

    Safety valve DSV...F

    For the protection of:
    - cooling plants and closed cooling circuits
    - pressure tanks/-systems for water and cooling liquids with glycol content of up to 100 %
    The temperature of the medium under atmospheric pressure must not reach boiling point.
    Spring-loaded, can be vented manually, spring compartment protected by diaphragms.
    Inlet and outlet side with female thread.
    Vertical installation.
    The valves are made entirely of metal and can withstand high environmental or radiation temperatures.
    All materials are suitable for max. temperatures up to 150°C.
    TÜV - Approval 293 F.

    Type*
    psv
    [bar]
    qNsv
    [m3/h]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DN 15
    DSV 15-3.0 F
    3,0
    2,6
    70
    17
    26
    0,2
    G1/2
    G1/2
    7640161633322
    301051-20430
    DSV 15-4.0 F
    4,0
    3,0
    70
    17
    26
    0,2
    G1/2
    G1/2
    7640161633339
    301051-20440
    DSV 15-5.0 F
    5,0
    3,4
    70
    17
    26
    0,2
    G1/2
    G1/2
    7640161633346
    301051-20450
    DSV 15-6.0 F
    6,0
    3,7
    70
    17
    26
    0,2
    G1/2
    G1/2
    7640161633353
    301051-20460
    DSV 15-7.0 F
    7,0
    4,0
    70
    17
    26
    0,2
    G1/2
    G1/2
    7640161633360
    301051-20470
    DSV 15-8.0 F
    8,0
    4,3
    70
    17
    26
    0,2
    G1/2
    G1/2
    7640161633377
    301051-20480
    DSV 15-9.0 F
    9,0
    4,5
    70
    17
    26
    0,2
    G1/2
    G1/2
    7640161633384
    301051-20490
    DSV 15-10.0 F
    10,0
    4,8
    70
    17
    26
    0,2
    G1/2
    G1/2
    7640161633391
    301051-20410
    DN 20
    DSV 20-3.0 F
    3,0
    4,4
    70
    18
    31
    0,3
    G3/4
    G3/4
    7640161633407
    301051-20530
    DSV 20-4.0 F
    4,0
    5,1
    70
    18
    31
    0,3
    G3/4
    G3/4
    7640161633414
    301051-20540
    DSV 20-5.0 F
    5,0
    5,7
    70
    18
    31
    0,3
    G3/4
    G3/4
    7640161633421
    301051-20550
    DSV 20-6.0 F
    6,0
    6,3
    70
    18
    31
    0,3
    G3/4
    G3/4
    7640161633438
    301051-20560
    DSV 20-7.0 F
    7,0
    6,8
    70
    18
    31
    0,3
    G3/4
    G3/4
    7640161633445
    301051-20570
    DSV 20-8.0 F
    8,0
    7,2
    70
    18
    31
    0,3
    G3/4
    G3/4
    7640161633452
    301051-20580
    DSV 20-9.0 F
    9,0
    7,7
    70
    18
    31
    0,3
    G3/4
    G3/4
    7640161633469
    301051-20590
    DSV 20-10.0 F
    10,0
    8,1
    70
    18
    31
    0,3
    G3/4
    G3/4
    7640161633476
    301051-20510
    DN 25
    DSV 25-3.0 F
    3,0
    6,7
    80
    22
    35
    0,5
    G1
    G1
    7640161633483
    301051-20630
    DSV 25-4.0 F
    4,0
    7,7
    80
    22
    35
    0,5
    G1
    G1
    7640161633490
    301051-20640
    DSV 25-5.0 F
    5,0
    8,6
    80
    22
    35
    0,5
    G1
    G1
    7640161633506
    301051-20650
    DSV 25-6.0 F
    6,0
    9,5
    80
    22
    35
    0,5
    G1
    G1
    7640161633513
    301051-20660
    DSV 25-7.0 F
    7,0
    10,2
    80
    22
    35
    0,5
    G1
    G1
    7640161633520
    301051-20670
    DSV 25-8.0 F
    8,0
    10,9
    80
    22
    35
    0,5
    G1
    G1
    7640161633537
    301051-20680
    DSV 25-9.0 F
    9,0
    11,6
    80
    22
    35
    0,5
    G1
    G1
    7640161633544
    301051-20690
    DSV 25-10.0 F
    10,0
    12,2
    80
    22
    35
    0,5
    G1
    G1
    7640161633551
    301051-20610

    Spring loaded, with manual blow-off lever. Spring chamber is membrane sealed and pressure balanced. Female thread on both inlet and outlet sides, with the latter being larger. Vertical installation.

    Safety valve DSV...DGF

    Spring loaded, with manual blow-off lever. Spring chamber is membrane sealed and pressure balanced. Female thread on both inlet and outlet sides, with the latter being larger. Vertical installation.

    DN 15

    Type*
    psv
    [bar]
    qNsva
    [Nm3/h]
    qNsvv
    [kg/h]
    qNsvw
    [m3/h]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV...DGF 15-2.0
    2,0
    180
    142
    4,5
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810305
    301051-20420
    DSV...DGF 15-2.5
    2,5
    214
    167
    5
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810312
    301051-20425
    DSV...DGF 15-3.0
    3,0
    248
    193
    5,5
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810329
    301051-20431
    DSV...DGF 15-3.5
    3,5
    280
    217
    5,95
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810336
    301051-20435
    DSV...DGF 15-4.0
    4,0
    312
    242
    6,4
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810343
    301051-20441
    DSV...DGF 15-4.5
    4,5
    344
    266
    6,75
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810350
    301051-20445
    DSV...DGF 15-5.0
    5,0
    376
    290
    7,1
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810367
    301051-20451
    DSV...DGF 15-5.5
    5,5
    408
    313
    7,45
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810374
    301051-20455
    DSV...DGF 15-6.0
    6,0
    440
    337
    7,8
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810381
    301051-20461
    DSV...DGF 15-7.0
    7,0
    503
    385
    8,4
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810398
    301051-20471
    DSV...DGF 15-8.0
    8,0
    567
    432
    9
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810404
    301051-20481
    DSV...DGF 15-9.0
    9,0
    631
    480
    9,6
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810411
    301051-20492
    DSV...DGF 15-10.0
    10,0
    694
    527
    10,1
    90
    30
    35,5
    0,5
    G1/2
    G3/4
    5902276810428
    301051-20411

    DN 20

    Type*
    psv
    [bar]
    qNsva
    [Nm3/h]
    qNsvv
    [kg/h]
    qNsvw
    [m3/h]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV...DGF 20-2.0
    2,0
    340
    268
    8,2
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810435
    301051-20520
    DSV...DGF 20-2.5
    2,5
    404
    316
    9,15
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810442
    301051-20525
    DSV...DGF 20-3.0
    3,0
    468
    365
    10,1
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810459
    301051-20531
    DSV...DGF 20-3.5
    3,5
    530
    411
    10,9
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810466
    301051-20535
    DSV...DGF 20-4.0
    4,0
    592
    458
    11,7
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810473
    301051-20541
    DSV...DGF 20-4.5
    4,5
    652
    503
    12,4
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810480
    301051-20545
    DSV...DGF 20-5.0
    5,0
    712
    549
    13,1
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810497
    301051-20551
    DSV...DGF 20-5.5
    5,5
    772,5
    594
    13,7
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810503
    301051-20555
    DSV...DGF 20-6.0
    6,0
    833
    639
    14,3
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810510
    301051-20561
    DSV...DGF 20-7.0
    7,0
    953
    729
    15,5
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810527
    301051-20571
    DSV...DGF 20-8.0
    8,0
    1074
    819
    16,5
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810534
    301051-20581
    DSV...DGF 20-9.0
    9,0
    1194
    908
    17,5
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810534
    301051-20591
    DSV...DGF 20-10.0
    10,0
    1315
    998
    18,5
    115
    35
    42,5
    0,9
    G3/4
    G1
    5902276810558
    301051-20511

    DN 25

    Type*
    psv
    [bar]
    qNsva
    [Nm3/h]
    qNsvv
    [kg/h]
    qNsvw
    [m3/h]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV...DGF 25-2.0
    2,0
    556
    437
    13,5
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810565
    301051-20620
    DSV...DGF 25-2.5
    2,5
    660
    516
    15
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810572
    301051-20625
    DSV...DGF 25-3.0
    3,0
    764
    595
    16,5
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810589
    301051-20631
    DSV...DGF 25-3.5
    3,5
    865
    671
    17,8
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810596
    301051-20635
    DSV...DGF 25-4.0
    4,0
    966
    748
    19,1
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810602
    301051-20641
    DSV...DGF 25-4.5
    4,5
    1064,5
    822
    20,2
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810619
    301051-20644
    DSV...DGF 25-5.0
    5,0
    1163
    896
    21,3
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810626
    301051-20651
    DSV...DGF 25-5.5
    5,5
    1261
    969
    22,35
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810633
    301051-20655
    DSV...DGF 25-6.0
    6,0
    1359
    1043
    23,4
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810640
    301051-20661
    DSV...DGF 25-7.0
    7,0
    1556
    1190
    25,2
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810657
    301051-20671
    DSV...DGF 25-8.0
    8,0
    1753
    1337
    27
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810664
    301051-20681
    DSV...DGF 25-9.0
    9,0
    1950
    1483
    28,6
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810671
    301051-20691
    DSV...DGF 25-10.0
    10,0
    2147
    1629
    30,2
    146
    37
    48
    1,6
    G1
    G1 1/4
    5902276810688
    301051-20611

    DN 32

    Type*
    psv
    [bar]
    qNsva
    [Nm3/h]
    qNsvv
    [kg/h]
    qNsvw
    [m3/h]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV...DGF 32-2.0
    2,0
    816
    642
    20,2
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810695
    301051-20720
    DSV...DGF 32-2.5
    2,5
    972
    760
    22,5
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810701
    301051-20725
    DSV...DGF 32-3.0
    3,0
    1128
    879
    24,8
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810718
    301051-20731
    DSV...DGF 32-3.5
    3,5
    1279
    993
    26,75
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810725
    301051-20735
    DSV...DGF 32-4.0
    4,0
    1430
    1107
    28,7
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810732
    301051-20741
    DSV...DGF 32-4.5
    4,5
    1575,5
    1216
    30,4
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810749
    301051-20745
    DSV...DGF 32-5.0
    5,0
    1721
    1326
    32,1
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810756
    301051-20751
    DSV...DGF 32-5.5
    5,5
    1867
    1435
    33,6
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810763
    301051-20755
    DSV...DGF 32-6.0
    6,0
    2013
    1544
    35,1
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810770
    301051-20761
    DSV...DGF 32-7.0
    7,0
    2304
    1762
    37,9
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810787
    301051-20771
    DSV...DGF 32-8.0
    8,0
    2595
    1979
    40,6
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810794
    301051-20781
    DSV...DGF 32-9.0
    9,0
    2887
    2196
    43
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810800
    301051-20792
    DSV...DGF 32-10.0
    10,0
    3178
    2412
    45,4
    192
    45
    58
    3,3
    G1 1/4
    G1 1/2
    5902276810817
    301051-20711

    DN 40

    Type*
    psv
    [bar]
    qNsva
    [Nm3/h]
    qNsvv
    [kg/h]
    qNsvw
    [m3/h]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV...DGF 40-2.0
    2,0
    1379
    1085
    34,2
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810824
    301051-20820
    DSV...DGF 40-2.5
    2,5
    1643
    1285
    38,05
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810831
    301051-20825
    DSV...DGF 40-3.0
    3,0
    1907
    1486
    41,9
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810848
    301051-20831
    DSV...DGF 40-3.5
    3,5
    2162
    1679
    45,15
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810855
    301051-20835
    DSV...DGF 40-4.0
    4,0
    2417
    1872
    48,4
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810862
    301051-20841
    DSV...DGF 40-4.5
    4,5
    2663
    2056
    51,3
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810879
    301051-20845
    DSV...DGF 40-5.0
    5,0
    2909
    2241
    54,2
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810886
    301051-20851
    DSV...DGF 40-5.5
    5,5
    3155,5
    2425
    56,8
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810893
    301051-20856
    DSV...DGF 40-6.0
    6,0
    3402
    2609
    59,4
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810909
    301051-20861
    DSV...DGF 40-7.0
    7,0
    3894
    2977
    64,1
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810916
    301051-20871
    DSV...DGF 40-8.0
    8,0
    4386
    3344
    68,6
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810923
    301051-20881
    DSV...DGF 40-9.0
    9,0
    4879
    3711
    72,7
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810930
    301051-20892
    DSV...DGF 40-10.0
    10,0
    5371
    4077
    76,7
    229
    55
    68
    5,8
    G1 1/2
    G2
    5902276810947
    301051-20811

    DN 50

    Type*
    psv
    [bar]
    qNsva
    [Nm3/h]
    qNsvv
    [kg/h]
    qNsvw
    [m3/h]
    H
    h
    L
    m
    [kg]
    Sin
    Sout
    EAN
    Article No
    DSV...DGF 50-2.0
    2,0
    2089
    1643
    51,8
    276
    65
    80
    8,9
    G2
    G2 1/2
    5902276810954
    301051-20920
    DSV...DGF 50-2.5
    2,5
    2488,5
    1947
    57,65
    276
    65
    80
    8,9
    G2
    G2 1/2
    5902276810961
    301051-20925
    DSV...DGF 50-3.0
    3,0
    2888
    2251
    63,5
    276
    65
    80
    8,9
    G2
    G2 1/2
    5902276810978
    301051-20931
    DSV...DGF 50-3.5
    3,5
    3274,5
    2543
    68,45
    276
    65
    80
    8,9
    G/2
    G2 1/2
    5902276810985
    301051-20935
    DSV...DGF 50-4.0
    4,0
    3661
    2835
    73,4
    276
    65
    80
    8,9
    G/2
    G2 1/2
    5902276810992
    301051-20941
    DSV...DGF 50-4.5
    4,5
    4034
    3115
    77,75
    276
    65
    80
    8,9
    G/2
    G2 1/2
    5902276811005
    301051-20945
    DSV...DGF 50-5.0
    5,0
    4407
    3395
    82,1
    276
    65
    80
    8,9
    G/2
    G2 1/2
    5902276811012
    301051-20951
    DSV...DGF 50-5.5
    5,5
    4780
    3674
    86
    276
    65
    80
    8,9
    G2
    G2 1/2
    5902276811029
    301051-20955
    DSV...DGF 50-6.0
    6,0
    5153
    3953
    89,9
    276
    65
    80
    8,9
    G/2
    G2 1/2
    5902276811036
    301051-20961
    DSV...DGF 50-7.0
    7,0
    5899
    4510
    97,1
    276
    65
    80
    8,9
    G/2
    G2 1/2
    5902276811043
    301051-20971
    DSV...DGF 50-8.0
    8,0
    6644
    5066
    103,9
    276
    65
    80
    8,9
    G/2
    G2 1/2
    5902276811050
    301051-20981
    DSV...DGF 50-9.0
    9,0
    7390
    5621
    110,2
    276
    65
    80
    8,9
    G/2
    G2 1/2
    5902276811067
    301051-20991
    DSV...DGF 50-10.0
    10,0
    8136
    6175
    116,1
    276
    65
    80
    8,9
    G/2
    G2 1/2
    5902276811074
    301051-20911

    Coefficients of flow ISO 4126-1

    Nominal diameter
    DN15
    DN20
    DN25
    DN32
    DN40
    DN50
    αw /Kdr (D/G)
    0,45
    0,43
    0,43
    0,38
    0,38
    0,38
    αw /Kdr (F)
    0,64
    0,63
    0,63
    0,55
    0,55
    0,55
    Accessories

    Steel. Color beryllium.

    Material:

    Steel. Color beryllium.

    Type
    D
    H
    m
    [kg]
    Sin
    Sout
    Sw
    EAN
    Article No
    2 bar (PS)
    ET 32-125
    133
    312
    4,5
    DN 32
    DN 65
    DN 15
    7640148634762
    785 2500
    ET 65-250
    285
    500
    9
    DN 65
    DN 125
    DN 20
    7640148634779
    785 2501
    ET 100-400
    405
    760
    23,5
    DN 100
    DN 200
    DN 25
    7640148634786
    785 2502
    ET 150-600
    605
    1022
    38
    DN 150
    DN 300
    DN 32
    7640148634793
    785 2503

    DSV – ET allocation

    DSV...H
    ET
    DSV...DGH
    psv ≤ 5 bar
    ET
    psv > 5 bar
    ET
    DSV 15H
    -
    -
    -
    DSV 20H
    -
    -
    -
    DSV 25H
    DSV 25DGH
    ET 65-250
    ET 65-250
    DSV 32H
    ET 65-250
    DSV 32DGH
    ET 65-250
    ET 65-250
    DSV 40H
    ET 100-400
    DSV 40DGH
    ET 65-250
    ET 100-400
    DSV 50H
    ET 100-400
    DSV 50DGH
    ET 100-400
    ET 100-400

    *) No ET as QNsvv < 350 kW.

    Blow_tank_ET_7852501

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    Blow_tank_ET_7852502

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    Blow_tank_ET_7852500

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    Safetyvalves_frontpage

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    Blow_tank_ET_7852503

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    Safety_valve_DSV_DGH_DN15-32

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    Safety_valve_DSV-DGF

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    Safety_valve_DSV_H_DN15-32

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    Safetyvalves_frontpage_CH

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    Safety_valve_DSV-DGH_DN40-50new

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