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首頁 > 行業新聞> 為化學植物選擇耐腐蝕的波紋管控制閥
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為化學植物選擇耐腐蝕的波紋管控制閥

選擇右腐蝕的波紋管控制閥對於化學植物的安全有效操作至關重要，在這種化工廠中，侵略性培養基（例如酸，鹼和溶劑）可以降解設備。這是關鍵考慮因素：

1。 材料兼容性

閥體，裝飾和波紋管必須抵抗所處理的特定化學物質。對於濃酸（例如，硫酸）， Hastelloy或鈦是理想的，因為它們對氧化環境的抗性。對於鹼， 316升不銹鋼效果很好，而PTFE襯裡的閥門適合高腐蝕性或高純度應用。風箱是一個關鍵的密封組件，通常是由inconel或鈦製成的，可以承受不腐蝕的重複彎曲。
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2。 壓力和溫度等級

確保閥門處理過程的壓力（例如150-600 ANSI類）和溫度範圍。風箱材料（如Inconel 625）在高溫（高達800°C）和高壓場景中的表現良好，而PTFE波紋管僅限於較低的溫度（通常<200°C）。

3。 波紋管設計與完整性

選擇具有多層結構的波紋管來增強耐用性並防止洩漏 - 單層設計可能在頻繁騎行下失敗。檢查認證（例如，ISO 15848），以確認緊密的關閉和長期可靠性，對於含有有毒或揮發性化學物質至關重要。

4。 流量和尺寸

將閥的流量係數（CV）與過程的流量要求匹配。要精確控制腐蝕性漿液，請選擇全端口設計以最大程度地減少堵塞和侵蝕。

5。 合規性和維護

針對化學廠安全的閥門符合行業標準（例如，ASME，API）。優先考慮易於重複的波紋管和修剪的型號，以減少停機時間，因為腐蝕會在惡劣的環境中加速磨損。
通過關注材料電阻，操作參數和設計完整性，植物操作員可以選擇風箱控制閥，以確保腐蝕性化學過程中的壽命和安全性。
July 24, 2025
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