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    技術支援 閥標稱系數說明
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    1. 標稱壓力: 指120℃以下之油或有變動負荷之水流所能承受之最高容許額定壓力,各部位不得有泄漏或其他異狀。
    例:125S 600W.O.G (C.W.P)
    說明:125指標稱壓力,600W.O.G指當常溫運作水、油、氣體時閥座承受壓力為600psi(42kg f/cm2) 不允許有泄漏現象。
    2. W.O.G 指水(WATER)、油(OIL)、氣體(GAS)。
    3. C.W.P 冷(COLD)、工作(WORKING)、壓力(PRESSURE)、指常溫(-28.9℃~65.6℃)運作壓力。
    4. S.W.P 蒸汽(STEAM)、工作(WORKING)、壓力(PRESSURE)。
    5. 壓力單位:
    Kgf/cm2,PSI(1b/in2)。例如:1Kgf/cm2=14.2233PSI 125PSI=8.5Kgf/cm2
    6. 流量系數Cv值: 當水流的溫度為60℉(15.6℃)時,通過閥之后,壓力差保持為1b/in2(1PSI),則每分鐘流過的加侖數量即是Cv值。簡單的說每分鐘的出水量。
    7. 結露現象: 當配管內流體溫度低于配管外之大氣溫度時,配管外壁表面會產生水滴,此種現象稱為結露現象。
    8. 溫度與壓力表: PRESSURE TEMPERATURE RATING

    Pressure-Temperature Ratings For Cast Bronze Valve (MSS SP-80)
    Maximum Allowable Non-shock Pressure           working Pressure-(PSI)
    PRESS.
    CLASS
    125
    150
    200
    300
    END CONN.
    Threaded
    Threaded
    Flanged(2)
    Threaded
    Thraded(5)
    Threaded
    TEMP.
    deg.℉
    Material
    ASTM-B62
    ASTM-B61
    -20 to 150
    200
    250
    300
    350
    400
    406
    450
    500
    550
    200
    185
    170
    155
    140
    -
    125
    120(4)
    -
    -
    300
    270
    240
    210
    180
    -
    150
    145(4)
    -
    -
    225
    210
    195
    180
    165
    -
    150
    -
    -
    -
    400
    375
    350
    325
    300
    275
    -
    250
    225
    200
    1000
    920
    830
    740
    650
    560
    -
    480
    390
    300
    600
    560
    525
    490
    450
    410
    -
    375
    340
    300
    Notes: (2)P-T Ratings ANSI B16.24
    (4)Some codes (i.e.ASME BPVC.Section I) limit the rating Temp. of the indicated material to 406℉ (208℃)
    (5)Alternate ratings for valve size 1/8 2 having threaded ends and union ring body-bonnet joints.

    Maximum Allowable Non-shock Pressure          Working Pressure-(Bar)
    PRESS.
    CLASS
    125
    150
    200
    300
    END CONN.
    Threaded
    Threaded
    Flanged(2)
    Threaded
    Thraded(5)
    Threaded
    Temperature.
    deg.℃
    Material
    ASTM-B62
    ASTM-B61
    -30 to 65
    75
    100
    125
    150
    175
    200
    208
    225
    232
    250
    275
    288
    13.8
    13.4
    12.5
    11.6
    10.7
    9.8
    8.9
    8.6
    -
    8.2(4)
    -
    -
    20.6
    19.9
    18.1
    16.3
    14.5
    12.7
    10.9
    10.3
    -
    10.0(4)
    -
    -
    -
    15.5
    15.2
    14.2
    13.3
    12.4
    11.5
    10.6
    10.3
    -
    -
    -
    -
    -
    27.6
    27.0
    25.4
    23.9
    22.5
    20.8
    19.2
    -
    17.7
    -
    16.2
    14.6
    13.8
    69.0
    67.0
    61.6
    56.1
    50.6
    45.2
    39.7
    --
    34.3
    -
    28.8
    23.4
    20.7
    41.4
    40.6
    38.3
    36.0
    33.6
    31.3
    29.0
    -
    26.6
    -
    24.3
    22.0
    20.7
    1 bar = 100kPa

    Pressure-Temperature Ratings For Cast Iron Valve (MSS SP-70)
    Maximum Allowable Non-shock Pressure           Working Pressure-(PSI)
    CLASS
    125
    250
    800Hyd.
    Temperature
    Degrees ℉
    NPS
    2-12
    NPS
    14-24
    NPS
    30-48
    NPS
    2-12
    NPS
    14-24
    NPS
    2-12
    -20 to 150
    200
    225
    200
    190
    180
    150
    135
    130
    150
    115
    100
    500
    450
    440
    300
    280
    270
    800
    250
    275
    300
    175
    170
    165
    125
    120
    110
    85
    65
    50
    415
    395
    375
    260
    250
    240
    1
    325
    350
    375
    155
    150
    145
    105
    100
    1
    355
    335
    315
    230
    220
    210
    1
    400
    425
    450
    140
    130
    125
    1
    1
    290
    270
    250
    200
    1

    Maximum Allowable Non-shock Pressure           Working Pressure-(Bar)
    CLASS
    Class 125
    Class 250
    Class 800Hyd.
    Temperature
    Degrees ℃
    NPS
    2-12
    NPS
    14-24
    NPS
    30-48
    NPS
    2-12
    NPS
    14-24
    NPS
    2-12
    -29 to 65
    100
    125
    13.8
    12.8
    11.9
    10.3
    9.2
    8.5
    10.3
    7.4
    5.3
    34.5
    30.9
    28.3
    20.7
    19.0
    17.7
    55.0
    150
    175
    200
    11.2
    10.4
    9.6
    7.7
    7.0
    3.3
    25.7
    23.1
    20.6
    16.5
    15.3
    14.0
    1
    205
    225
    232
    8.8
    8.6
    1
    1
    17.9
    17.2
    13.8
    1
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