逆止閥 · 旋啟式逆止閥

CF8M 法蘭旋啟式逆止閥

CF8M 不鏽鋼法蘭旋啟逆止結構,基準點為 DN100(4 吋)PN16:ASTM A351 CF8M 鑄造閥體、法蘭端連接與噴砂表面處理,用於腐蝕介質流體系統中不鏽鋼閥體優於鑄鐵或碳鋼的可靠防倒流應用。

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最後更新: 2026-11

CF8M 法蘭旋啟式逆止閥
產品照片——代表此型號結構

規格

model designation LV-SCV-20250910-02
Valve body material ASTM A351 CF8M
size DN100, 4 Inch
Pressure Rating PN16
end connection Flanged
surface treatment Sand Blasting
product item Stainless Steel
product type Swing type check valve
design standard range BS 1868, API 6D, DIN 3352
Nominal valve connection size NPS 2 - 24 Inch, DN50 - DN600
pressure class range Class 150 - 2500 LB, PN10 - PN420
design temperature range -196℃ - 593℃
Face-to-face dimensional standard as per ASME B16.10
test and inspection API 598
end connection standards ASME B16.5, ASME B16.25, EN1092 series
connection ends RF Flanged ends
design execution API 6D - Full Bore
cover type Bolted cover
body material options ASTM A216 WCB, ASTM A216 WCC, ASTM A217 WC6, ASTM A217 WC9, ASTM A217 C5, ASTM A217 C12A, ASTM A352 LCB, ASTM A352 LCC, ASTM A351 CF8, ASTM A351 CF8M, ASTM A351 CF3M, ASTM A351 CF8C, CN3MN, CK3MCUN, CN7M, ASTM A890 4A (CD3MN), ASTM A890 5A (CE3MN), ASTM A890 6A (CD3MWCuN), ASTM B148 C95800, ASTM B148 C95500

應用與選型指引

Use this execution where a PN16 flanged line carries corrosive or hygienic-sensitive media and reverse flow must be blocked with low cracking pressure: the swing disc opens on forward flow and seats on reversal without actuation. For screwed small-bore CF8M points see the compact CF8M execution; for higher ratings move to the duplex or forged-steel swing check executions.

常見問題

Why CF8M for a swing check body?

ASTM A351 CF8M is the cast 316-grade stainless: it resists the corrosive media that would pit cast iron or carbon steel bodies while keeping the casting economy of a swing check, which matters at the DN100 flanged benchmark size.

What are the benchmark specifications?

Stainless steel swing check valve: ASTM A351 CF8M body, DN100 (4 inch), PN16, flanged end connection, sand-blasted surface treatment.

How is this execution connected and finished?

The collected benchmark page lists a flanged end connection on a PN16 rating at the DN100 (4 inch) size, with a sand-blasted surface treatment on the ASTM A351 CF8M cast body; body material, size, pressure rating, end connection and surface finish are the five fields the source records for this model.

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。

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