J41B氨用截止閥
J41B氨用截止閥產品概述（中英文）
J41B氨用截止閥是一種專為氨氣、液氨等介質設計的閥門，廣泛應用于制冷、化工、石油、食品等行業。該閥門采用耐腐蝕鋼材質，可有效抵抗氨介質的腐蝕，適用溫度范圍為-40℃至150℃。其結構特點包括方形中通法蘭、間桿連接的閥桿設計，以及球凸狀閥體密封面與閥腳的線吻合密封，確保良好的密封性能和使用壽命。密封面材料選用巴氏合金或聚四氟乙烯，進一步提升了密封可靠性和耐用性。閥門適用于城市燃氣、液化氣等管道系統，也可用于煉油廠、化工廠的冷卻系統，作為控制介質截止的啟閉裝置。1212
The J41B ammonia globe valve is specifically designed for ammonia gas, liquid ammonia, and other media, widely used in refrigeration, chemical, petroleum, and food industries. The valve is made of corrosion-resistant steel, effectively resisting ammonia corrosion, with an operating temperature range of -40℃ to 150℃. Its structural features include a square intermediate flange, a stem connected by intermediate rods, and a spherical convex valve body sealing surface that forms linear contact with the valve seat, ensuring excellent sealing performance and service life. The sealing surface materials use Babbitt alloy or PTFE, further enhancing sealing reliability and durability. The valve is suitable for urban gas and liquefied petroleum gas pipeline systems, as well as cooling systems in refineries and chemical plants, serving as a shut-off device for medium control. 192328
產品結構與工作原理（中英文）
J41B氨用截止閥的閥體結構分為直通式、直流式和直角式三種，其中直角式多采用鍛造工藝，適用于小口徑高壓場合。閥門啟閉件為塞形閥瓣，密封面呈平面或錐面，閥瓣沿流體中心線作直線運動實現啟閉。閥桿設計有升降桿式和升降旋轉桿式兩種形式，操作輕便可靠。閥門采用榫槽密封結構的中法蘭和多級聚四氟乙烯填料密封，即使在壓力波動情況下也能保證密封可靠性。其工作原理是通過順時針旋轉手輪使閥桿下移，閥瓣下降實現密封；逆時針旋轉則開啟閥門，介質可通過。3820
The J41B ammonia globe valve body comes in three structures: straight-through, straight-flow, and angle types, with the angle type often forged and suitable for small-bore high-pressure applications. The valve s opening/closing element is a plug-shaped disc with flat or conical sealing surfaces that move linearly along the fluid centerline. The stem has two designs: rising stem and rising-rotating stem, both ensuring easy and reliable operation. The valve features a tongue-and-groove sealed intermediate flange and multi-stage PTFE packing seals, maintaining sealing reliability even under pressure fluctuations. Its working principle involves clockwise handwheel rotation to lower the stem and close the valve, while counterclockwise rotation opens the passage for media flow. 141622
產品特點與優勢（中英文）
J41B氨用截止閥具有多項設計優勢：密封副采用球面與平面配對結構，可實現自動補償密封，形成雙重保險；閥體材料添加耐蝕合金元素，解決了普通閥門殼體易穿孔的問題；密封面采用巴氏合金或四氟材料，摩擦系數小，使用壽命長；閥桿行程較短，具有快速切斷功能。閥門在溫差變化大的環境下仍能保持良好的化學處理性能，特別適合氨制冷系統中介質流動通道的接通和切斷。其緊湊的設計、流暢的通道和低流阻系數，使其在食品、制藥等行業得到廣泛應用。4715
The J41B ammonia globe valve offers several design advantages: the spherical-to-flat sealing pair enables automatic compensation for dual protection; the valve body material with corrosion-resistant alloy elements solves the common problem of shell perforation; Babbitt alloy or PTFE sealing surfaces provide low friction coefficients and long service life; the short stem stroke allows quick shut-off. The valve maintains good chemical processing performance even under large temperature variations, making it particularly suitable for connecting and cutting off media flow in ammonia refrigeration systems. Its compact design, smooth passage, and low flow resistance coefficient have led to widespread use in food, pharmaceutical, and other industries. 5917
應用領域與注意事項（中英文）
J41B氨用截止閥主要應用于液化天然氣、液氨、煤氣等低溫介質的輸送系統，包括冷凍冷藏、石油化工、冶金等領域。在使用過程中需注意：安裝前應檢查連接規格是否匹配，保持連接面清潔；嚴禁接觸油脂類物質；停止工作時需排凈閥內余氣，避免彈性元件長期受壓變形；運輸儲存時應防止撞擊振動，遠離腐蝕性環境。閥門不適用于含固體顆粒或高粘度介質，在特殊工況下需提供詳細參數進行定制設計。61013
The J41B ammonia globe valve is mainly used in transportation systems for liquefied natural gas, liquid ammonia, coal gas, and other cryogenic media, including refrigeration, petrochemical, and metallurgical industries. Usage precautions include: checking connection specifications before installation and keeping connecting surfaces clean; strictly avoiding contact with greasy substances; venting residual gas when not in use to prevent long-term pressure on elastic elements; preventing impact and vibration during transportation/storage, and keeping away from corrosive environments. The valve is not suitable for media containing solid particles or with high viscosity, and custom design may be required for special working conditions with detailed parameters provided. 111821
J41B氨用截止閥
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