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軸流式逆止閥
軸流式逆止閥沿流動軸線關閉一片彈簧輔助、流線型閥盤，倒流在加速之前即被阻止——這是高速管線的無水錘選擇。產品範圍涵蓋 NPS 2" 至 60"（DN 50 至 DN 1500），ASME Class 150 至 2500（PN 16 至 PN 420），閥體為碳鋼、不鏽鋼、合金鋼與雙相不鏽鋼，端接為 RF、BW 或 RTJ，流道呈文丘里形並配金屬密封閥盤，有長短兩種型式、可任意方向安裝，設計依 API 6D / API 594。選型取決於型式對安裝長度、壓力等級對管線壓力與瞬變，以及彈簧關閉對流體介質。
屬於 逆止閥 系列
最後更新： 2026-11
系列規格
| Nominal valve connection size | NPS 2" to 60" (DN 50 to DN 1500) |
|---|---|
| Pressure class / nominal rating designation | ASME Class 150 to 2500 (PN 16 to PN 420) |
| Valve body material | Carbon Steel, Stainless Steel, Alloy Steel, Duplex Stainless Steel |
| End connection types | RF, BW, RTJ |
| Operation / closure mode | Self-acting (automatic) |
| Service temperature range | -196°C to 570°C |
| Design standards | API 6D, API 594 |
| Inspection and pressure-test standards | API 598, API 6D, MSS |
| applications | High-flow systems, reciprocating pumps, pipeline transmission |
| Materials (component scope as published) | Carbon Steel, Stainless Steel, Alloy Steel, Duplex Stainless Steel |
| ccv design feature | Compact design and short face to face to meet API 594 |
| ccv moving parts | One moving part resulting in minimal wear and long service life |
| ccv response feature | Quick dynamic response reducing reverse velocity and minimizing damaging water hammer |
| ccv stroke feature | Short stroke to help in quick response |
| ccv spring options | Choice of springs for specific critical velocity and valve response |
| ccv reciprocating service | Suitable for reciprocating compressor service eliminating chatter |
| ccv spring design | Spring is internal and protected from process flow |
| ccv preferred service | Preferred in centrifugal compressor service |
| ccv size range | 12′′ – 60′′ |
| ccv pressure rating | Class 150 – 4500 |
| ccv api 6a rating | Class 2000 – 15,000 |
| ccv body configuration | Flanged, butt-weld ends, hub ends and specials |
| ccv face to face standard | Face to face design to API 594 |
| ccv axial performance | axial check valve performance and reliability |
| fls model | Model NZ & NZS Axial Flow Nozzle Check Valve |
| fls size range | 1/2′′ – 72′′ |
| fls pressure class | ASME Class 150 – 2500 |
| fls design feature | High performance, non-slam, reliable design for applications where low pressure loss and zero downtime are driving factors |
| fls wafer variant | Model NZW API 594 Axial Flow Wafer Check Valve |
| lnd design standard | API 6D |
| lnd size range | NPS 2-60 Inch |
| lnd pressure range | Class 150-2500 LB |
| lnd body materials | Carbon Steel, Stainless Steel, Duplex Stainless Steel, Alloy Steel, Nickel Alloy |
| lnd end connections | RF/RTJ/BW |
| Pressure Rating | ASME Class 150 to 2500 (PN 16 to PN 420) |
| standards | API 6D, API 594 |
| flow design | Streamlined venturi-shaped design for optimized flow |
| closure mechanism | Spring-assisted closure for rapid response |
| seat design | Metal-seated disc for durable sealing |
| installation orientation | Suitable for installation in any orientation |
| pattern options | Long pattern, Short pattern |
訂購與文件
文件
請在詢問時一併說明您需要的文件組合——此結構的常見項目（材質證明、按所列檢驗標準的測試報告、尺寸圖）將於報價時確認並隨附供應。
報價
可直接報價的詢問應說明：公稱口徑與壓力額定、閥體與閥座材質偏好、端部連接、操作方式，以及含溫度的使用介質。本頁的典型值為基準參考範圍；具有約束力的數值於報價時確認。
樣品與供應
供應條件、訂購數量與交期按訂單議定——請在詢問時說明目的地國家與所需時程。
儲存與運輸
閥門儲存時應保護閥座與密封件免受紫外線、臭氧與變形影響，安裝前保留端面保護蓋；彈性體或 PTFE 閥座結構應避免長期戶外存放——閥座材料在陽光直射與冰凍條件下老化最快。
常見問題
軸流式逆止閥的報價詢問應包含哪些內容？
執行標準與壓力等級、公稱口徑、閥體與閥座材質、介質及溫度、目的地——缺失的資訊會在報價過程中確認。
軸流式逆止閥提供哪些口徑與壓力等級？
本頁面尚未公布該閥門經驗證的口徑與壓力等級範圍——適用於您工況的口徑與壓力等級會在報價過程中提出並確認。請在詢問時附上工況條件，選型結果會在報價中說明。
軸流式逆止閥提供哪些閥體材質？
本頁面尚未公布該閥門經驗證的閥體材質範圍——適用於您工況的閥體材質會在報價過程中提出並確認。請在詢問時附上工況條件，選型結果會在報價中說明。
請求軸流式逆止閥報價
在此提交需求——可直接報價的詢問應說明適用標準與等級、口徑、材質、介質、溫度與目的地.
您的資料如何處理，詳見我們的隱私權公告。
準備提出較大量或非標準需求？ 軸流式逆止閥詢價指南 說明應包含的內容、標準範圍與客製選項，以及應附上的文件。