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                                閥門材料溫度極限表

                                閥門材料溫度極限表:

                                閥門材料的極限溫度是指閥門能正常工作的極限溫度,閥門材料的極限溫度對于生產安全至關重要,閥門材料的溫度極限,以下附表詳細介紹。

                                1 有些規程(例如:ASME,BPVC,SECTION 1)將上述材料的額定溫度限制在406oF以下。
                                Some codes (i.e., ASME BPVC, SECTION 1) limit the rating temperatures of the indicated material to 406oF.
                                2 丁腈橡膠閥瓣閥門的溫度限制在180oF以下。
                                Buna-N disc valves limited to 180oF temperatures.
                                3 TFE閥瓣閥門的溫度限制在450oF以下。
                                TFE disc valves limite to 450oF temperatures.
                                4 焊接連接端口閥門溫度限制在不影響焊接連接端口的強度范圍內。
                                Solder end valves are limited by temperatures which affect the strength of the solder joint.
                                ‡ 本表引自MSS-SP80
                                Tables from MSS-SP80
                                尼伯科灰鑄鐵和球墨鑄鐵閥門的壓力/溫度額定值
                                PRESSURE/TEMPERATURE RATINGS FOR NIBCO GRAY IRON AND DUCTILE IRON VALVES
                                  灰鐵
                                GRAY IRON
                                球墨鑄鐵
                                DUCTILE IRON
                                溫度oF
                                1), 2)
                                Temperature
                                Degrees oF
                                1), 2)
                                125磅級
                                200水、油、氣
                                Class 125
                                200 WOG
                                250磅級
                                500水、油、氣
                                Class 250
                                500 WOG
                                150磅級
                                Class 150
                                2" - 12" 14" - 24" 30" - 48" 2" - 12" 14" - 24" 2" - 12"
                                -20 to 100 200 150 150 500 300 250
                                150 200 150 -- 500 300 243
                                200 190 135 115 460 280 235
                                225 180 130 100 440 270 --
                                250 175 125 85 415 260 225
                                275 170 120 65 395 250 --
                                300 165 110 50 375 240 215
                                325 155 105 -- 355 230 --
                                350 150 100 -- 335 220 210
                                375 145 -- -- 315 210 --
                                400 140 -- -- 290 200 200
                                425 130 -- -- 270 -- --
                                *450 125 -- -- 250 -- 185
                                500 -- -- -- -- -- 170
                                550 -- -- -- -- -- 155
                                600 -- -- -- -- -- 140
                                650 -- -- -- -- --

                                 

                                在連接銅管和焊接端口閥門時要核對壓力/溫度額定值†
                                ADJUSTED PRESSURE/TEMPERATURE RATINGS FOR JOINTS MADE OF COPPER TUBE AND SOLDER END VALVES†
                                焊接連接
                                SOLDER USED
                                IN JOINTS
                                工作溫度
                                華氏oF
                                SERVICE
                                TEMPERATURE
                                DEGREES oF
                                水,包括其它非腐蝕性液體和氣體
                                WATER, Including other noncorrosive liquids and gases
                                飽和氣體
                                SATURATED STEAM
                                閥門公稱通徑
                                Valve Sizes
                                (psig)
                                1/4英寸至1英寸
                                1/4" through 1"
                                1/4英寸至2英寸
                                1/4" through 2"
                                2 1/2英寸至2英寸
                                2 1/2" through 2"
                                1/4英寸至4英寸
                                1/4" through 4"
                                50 -- 50
                                錫 -- 鉛
                                (ASTM B-32)
                                50 - A等級合金
                                50 -- 50
                                Tin -- Lead
                                (ASTM B-32)
                                Alloy Grade 50 - A
                                100 200 175 160 --
                                150 150 125 100 --
                                200 100 90 75 --
                                250 85 75 50 15*
                                95 -- 5
                                錫 -- 銻
                                95 -- 5
                                Tin -- Antimony
                                100 500 400 300 --
                                150 400 350 275 --
                                200 300 250 200 --
                                250 200 175 150 15*
                                * 這個壓力取決于飽和蒸氣在表中的最高溫度。
                                † 本表根據美國國家標準局公布的“建造材料和結構報告BMS58和BMS83“編制而成。
                                * This Pressure is determined by the temperature of saturated steam at the maximum temperature shown.
                                † Tables from National Bureau of Standards publications "Building Materials and Structures Reports BMS58 and BMS83"
                                青銅額定壓力閥門的壓力/溫度額定值‡
                                PRESSURE/TEMPERATURE RATINGS FOR BRONZE PRESSURE RATED VALVES‡
                                  壓力 -- PSI
                                PRESSURE -- PSI
                                壓力等級
                                PRESS. CLASS
                                1252, 3 150 300
                                連接端口
                                END CONN.
                                螺紋
                                THD.
                                螺紋
                                THD.
                                螺紋
                                THD.
                                溫度
                                TEMP.
                                材料
                                MATERIAL
                                溫度 oF
                                (DEG. oF)
                                ASTM B-62 ASTM B-61
                                -20至150
                                -20 to 150
                                200 300 600
                                200 185 270 560
                                250 170 240 525
                                300 155 210 490
                                350 140 180 450
                                400 -- -- 410
                                406 125 150 --
                                450 1201 1451 375
                                500 -- -- 340
                                550 -- -- 300
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