規格
| Valve body material | ASTM A216 WCB |
|---|---|
| Disc Materials | ASTM A216 WCB |
| gland materials | ASTM A216 WCB |
| gasket materials | Graphite |
| seal ring materials | SS304+Graphite |
| retaining ring materials | ASTM A105 |
| end cap materials | ASTM A105 |
| Operation / closure mode | Gear Operated, Electric Actuated, Pneumatic Actuated |
| End connection types | Flanged |
| Nominal valve connection size | DN50 to DN500 |
| Pressure class / nominal rating designation | PN10 to PN63, Class 150 to Class 1500 |
| Design standards | BS5155, EN 593 |
| Face-to-face dimensional standard | ASME B16.5, DIN 3202 F4, EN 558-1 |
| Flange standards | DIN, ANSI B16.1, BS4504, EN 1092 |
| Inspection and pressure-test standards | API 598 |
應用與選型指引
Specify this execution where a fire-safe-minded, zero-leakage metal seat is required and the line calls for flanged ends rather than a wafer or lug body: steam, hydrocarbon and high-temperature duties inside PN10 to PN63 or Class 150 to Class 1500. Size within DN50 to DN500, choose the operator for torque and fail-safe needs, and confirm the face-to-face (DIN 3202 F4 / EN 558-1 family) against the mating flange standard before ordering.
常見問題
Triple offset vs double offset butterfly valve - what changes?
Double offset geometry still uses an interference seat, so sealing rubs and soft or graphite seals wear. The third offset cams the disc into the seat perpendicular to the axis, making sealing friction-free and fully metal-to-metal - tight shutoff at high temperature with a seat that does not rub itself apart. For steam, hydrocarbons and other hot duties inside the declared class range, the triple offset execution is the durable choice.
Why a flanged body instead of wafer or lug?
Flanged ends bolt directly to matching class flanges, which suits pipework specified to DIN or ANSI B16.1-class flange standards and simplifies removal for maintenance in heavier service. Wafer and lug bodies save length, but where the plant standard expects bolted joints, the flanged execution installs without special clamp length planning.
What information is needed to quote a flanged triple offset butterfly valve?
Nominal size in the DN50 to DN500 band, pressure class (PN10 to PN63 or Class 150 to Class 1500), operator choice (gear, electric, pneumatic), the mating flange standard, and the medium with its temperature. Those points fix the execution, seal ring and operator for a quotation-ready inquiry.
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。