產品結構特點 Construction features 內螺紋與承插焊截止閥的閉合原理是，依靠閥杠壓力，使閥瓣密封面與閥座密封面緊密貼合，阻止介質流通。截止閥只許介質單向流動，安裝時有 方向性。截止閥的結構 長度大于閘閥，同時流體阻力大，長期運行時，密封可靠性不強。 The closed principle of the internal screw and socket welding stop valve is to rely on the stem pressure to close the sealing cover of the disc and the sealing cover of the seat to prevent the circulation of the medium. The globe valve only allows the medium to flow in one direction, and the installation has directivity. The globe valve has a structure length greater than gate valve, while fluid resistance is large, and the sealing reliability is not strong in the long run. 技術規(guī)范 Technical specification 截止閥結構長度和外接尺寸 Main connection dimensions
設計依據 Design reference GB系列 GB series 設計標準 Design standard GB/T12235 結構長度 Face to face GB/T12221 連接法蘭 End flange GB/T12224 試驗和檢驗 Test & inspection GB/T26480
試驗壓力 Test prssure壓力等級
Pressure grade試驗壓力 Test pressure 公稱壓力 PN
Nominal pressure殼體試驗
Sheil test正密封試驗
Sealing test反密封試驗
Sealing test氣密封試驗
Air seal test1.6 2.4 1.76 1.76 0.6 2.5 3.75 2.75 2.75 0.6 4.0 6.0 4.4 4.4 0.6 6.3 9.45 6.93 6.93 0.6 10.0 15.0 11.0 11.0 0.6 16.0 24.0 17.6 17.6 0.6 26.0 39.0 28.5 28.5 0.6 PN:1.6~6.4 PN:10.0~26.0 公稱通徑
DNL
(mm)H
(mm)D0
(mm)L
(mm)H
(mm)D0
(mm)15 79 175 100 111 195 100 20 92 175 100 130 195 125 25 111 210 125 152 220 160 32 120 240 160 172 245 160 40 152 270 160 140 280 180 50 172 300 180 235 305 200
中國·高能閥門集團騰達閥門有限公司
蝶閥
鍛鋼截止閥系列 J61H64/100C 產品信息
關鍵詞：截止閥
