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冠龍閥門J41W-16P不銹鋼法蘭截止閥
詳細信息| 詢價留言品牌:北京冠龍閥門 型號:J41W-16P 材質:不銹鋼 連接形式:法蘭 公稱通徑:DN15-DN600 mm 適用介質:水;蒸汽;油品;各種高腐蝕化學介質 壓力環境:常壓 工作溫度:常溫 適用介質:水;蒸汽;油品;各種高腐蝕化學介質 截止閥(stop valve,Globe Valve)的啟閉件是塞形的閥瓣,密封面呈平面或錐面,閥瓣沿流體的中心線作直線運動。閥桿的運動形式,有升降桿式(閥桿升降,手輪不升降),也有升降旋轉桿式(手輪與閥桿一起旋轉升降,螺母設在閥體上)。截止閥只適用于全開和全關,不允許作調節和節流。
截止閥屬于強制密封式閥門,所以在閥門關閉時,必須向閥瓣施加壓力,以強制密封面不泄漏。當介質由閥瓣下方進入閥門時,操作力所需要克服的阻力,是閥桿和填料的摩擦力與由介質的壓力所產生的推力,關閥門的力比開閥門的力大,所以閥桿的直徑要大,否則會發生閥桿頂彎的故障。近年來,從自密封的閥門出現后,截止閥的介質流向就改由閥瓣上方進入閥腔,這時在介質壓力作用下,關閥門的力小,而開閥門的力大,閥桿的直徑可以相應地減少。同時,在介質作用下,這種形式的閥門也較嚴密。我國閥門“三化給”曾規定,截止閥的流向,一律采用自上而下。
截止閥開啟時,閥瓣的開啟高度,為公稱直徑的25%~30%時,流量已達到*大,表示閥門已達全開位置。所以截止閥的全開位置,應由閥瓣的行程來決定。
法蘭式截止閥執行標準 Administer Standard設計與制造 Design and Manufacture結構長度
Face To Face法蘭尺寸
Flange Dimension壓力-溫度 Pressure Temperature Lating試驗-檢驗 Inspection And TestGB122235GB12221GB9113 JB79GB9131GB/T13927 JB/T9092法蘭式截止閥壓力試驗 Pressure Test公稱壓力NominalPressure1.62.54.06.410.016.0強度試驗 Shell Test2.43.86.09.615.024.0水密封試驗 Water Seal Test1.82.84.47.011.018.0上密封試驗Backseat Test1.82.84.47.011.018.0氣密封試驗 Air Seal Test0.5-0.7法蘭式截止閥主要零件材料及性能 Main Part Materials and Property體、蓋、板 Body Cover Disc閥桿
Stem密封面 Sealing Face墊片
Sealing Shim填料
Packing工作溫度℃ Working Temperature適用介質Suitable MediumWCB2Cr1313CrSTL木體材料With BodyMaterial尼龍Nylon增強柔性石墨Enhanced Flexible Graphite13Cr/柔性石墨1Cr13/Flexible Graphite08軟鋼08 Soft Steal0Cr18Ni9Ti0Cr17Ni12Mo2TiXD550F(T)PTFE柔性石墨增強柔性石墨Flexible GraphiteEnhanced Flexible GraphiteSFB/260SFP/260PTFE≤425水蒸汽油品WaterSteamPetroleumPtoductsWC138CrMoAl25Cr2MoV≤450WC6≤540WC9≤570C5 C12≤540ZGCr5Mo≤200硝酸類Nitric acidZG1Cr18Ni9Ti1Cr18Ni9Ti≤200醋酸類Acetic acidZG1Cr18Ni12Mo2Ti1Cr18Ni12Mo2Ti法蘭式截止閥規格 主要尺寸和重量 Size Main Dimensions and Weight (mm kg)1.6MPaDNLDD1D2bn-φdHDo重量 Weight凸面法蘭
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