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刀型閘閥（knife gate）
刀型閘閥可切穿紙漿、漿料、木屑等會卡住楔形閘板的介質：帶鋒利邊緣的薄刀形閘板穿過介質並落入軟質密封環，使閥門在各口徑下都更短、更輕、更便宜。系列為單向設計，DN50 至 DN450，PN10，閥體為碳鋼、球墨鑄鐵或 SS316，刀板 SS304/SS316，密封環為聚氨酯、EPDM、NBR 或 Viton。端接為對夾（wafer）或凸耳（lug）；操作為手輪、電動或氣動。設計與製造依 MSS SP-81，面距依同一標準，法蘭連接依 DIN 與 JIS，測試依 API 598。同一家族另有雙向與漿料型變體。
屬於 閘閥 系列
最後更新： 2026-11
系列規格
| Nominal valve connection size | DN50 to DN450 |
|---|---|
| Pressure class / nominal rating designation | PN10 (Class 150 body option in collected tables) |
| Valve body material | Carbon steel, Ductile iron, SS316 |
| Disc Materials | SS304, SS316, SS316L |
| Operation / closure mode | Handwheel, Electric actuated, Pneumatic actuated |
| Service temperature range | -20°C to 80°C |
| Design standards | MSS SP-81 |
| Inspection and pressure-test standards | API 598 |
| Seal material | Polyurethane, EPDM, NBR, VITON |
| end type | Wafer type, Lug type |
| flow direction | Unidirectional |
| kgv structure | Bidirectional knife gate valve, wafer type |
| kgv nominal size | DN50 (2 inch) |
| kgv design pressure | PN10, PN16, Class 150 LB |
| kgv temperature range | -29 deg C to 120 deg C |
| kgv max working pressure | DN50-DN250: 10 bar; DN300-DN450: 7 bar |
| kgv body materials | GGG40, ASTM A351 CF8, CF8M, special alloys |
| kgv disc materials | Stainless steel chrome plated, special alloys |
| kgv seat materials | EPDM (120 deg C), NBR (80 deg C) |
| kgv flange standards | GB/T 9113.1, JB/T 79.1, HG 20592, ASME B16.5, EN 1092-1 |
| kgv face to face | MSS SP-81 |
| kgv operation options | Manual, pneumatic, electric, hydraulic |
| kgw nominal size | DN150 (6 inch) |
| kgw design pressure | PN16, Class 150 LB |
| kgw size range | NPS 2-24 inch (DN50-DN600) |
| kgw max working pressure | DN50-DN250: 10 bar; DN300-DN450: 7 bar; DN500-DN600: 4 bar |
| kgw temperature range | -29 deg C to 538 deg C |
| kgw body materials | Carbon steel, stainless steel, special alloy |
| kgw disc materials | Stainless steel chrome plated, special alloy |
| kgw seat materials | Stainless steel + cobalt-chromium hardfacing alloy; EPDM (120 deg C); Viton (200 deg C); PTFE (200 deg C); NBR (80 deg C) |
| kgw flange standards | GB/T 9113.1, JB/T 79.1, HG 20592, ASME B16.5, EN 1092-1 |
| kgw face to face | MSS SP-81 |
| kgw flow direction | Unidirectional, rising stem |
| kgw medium | Pulp, coal ash, sewage, food |
| kgx size range | DN50-DN450 (2-18 inch) |
| kgx pressure rating | 150 LB |
| kgx body material | SS410 |
| kgx stem material | Stainless steel 304 |
| kgx temperature range | -20 to 100 deg C |
| kgy size range | DN50-DN400 |
| kgy pressure rating | PN10/PN16 |
| kgy body material | Ductile iron |
| kgy seal materials | SS304/SS316 + EPDM |
| kgy stem material | Stainless steel 304 |
| kgy temperature range | 0-80 deg C |
| kgy medium | Water, oil, gas |
| kcm size range | 2-48 inch (DN50-DN1200) |
| kcm pressure rating | Class 150, PN10, PN16 |
| kcm body options | Integral body, two pieces body; bolt bonnet available |
| kcm stem types | Rising stem, non-rising stem (NRS) |
| kcm flow direction | Bi-directional |
| kcm operators | Bevel gear box, pneumatic cylinder, electrical, hydraulic, chain-wheel |
| kcm body materials | WCB, CF8, CF8M, SS2205, 904L |
| kcm seat materials | 20Cr13, SS304, SS316, 904L, SS2205, NBR, EPDM |
| kcm gate materials | 20Cr13, SS304, SS316, 904L, SS2205 |
| kcm stem material | 2Cr13 |
| kcm stem nut material | Brass |
| kcm stem packing | PTFE |
| kcm applications | Syrup, pulp, sewage, slurry, dust |
| kcn pressure rating | Class 150, PN10, PN16 |
| kcn connection types | Flanged wafer or lug, semi-lug |
| kcn stem types | Ring stem, non-rising stem type |
| kcn flow direction | Uni-direction, bi-direction flow |
| kcn operators | Manual handwheel, bevel gear, pneumatic, hydraulic, electric motor, chain wheel |
| kcn body materials | A216 WCB, A351 CF8, A351 CF8M |
| kcn gate materials | 20Cr13, SS304, SS316, 904L, SS2205 |
| kcn stem material | 2Cr13 |
| kcn stem packing | PTFE |
| kcn handwheel material | Ductile iron |
| nkg standard basis | Standard basis (MSS SP-81, ASME B16.34) to be confirmed for the selected series or configuration |
| nkg connection options | Wafer, lug or flanged, selected design dependent |
| nkg review inputs | Service medium, solids, pressure and maximum differential pressure, temperature, shutoff direction, connection, material or seat requirements, actuation, testing and document requirements, quantity |
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
刀型閘閥（knife gate）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。
刀型閘閥（knife gate）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。
刀型閘閥（knife gate）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。
此子類型的型號與結構
型號
單向刀型閘閥
單向刀型閘閥僅單側密封：薄刀形閘板推入為單一流向定尺寸的彈性密封（基準頁為聚氨酯、EPDM、NBR 或 Viton）。依 MSS SP-81 建造，基準結構涵蓋 DN50 至 DN450，對夾與凸耳端，PN10 / Class 150 任務，閥體碳鋼、球墨鑄鐵或 SS316，刀板 SS304/SS316，PTFE 填料
查看規格 →型號
雙向刀型閘閥
依 MSS SP-81 的雙向刀型閘閥結構：閘板在兩個流動方向均密封，安裝時無需考慮流向——與標準單向刀閘在製程撬裝與配水集箱上的實際差異。DN50 至 DN400，對夾或凸耳閥體，PTFE 填料配聚氨酯/EPDM/NBR/Viton 密封環，手輪或執行器操作。
查看規格 →請求刀型閘閥（knife gate）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.
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準備提出較大量或非標準需求？ 刀型閘閥（knife gate）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。