規格
| model series | BD343H, BD343Y, BD343WC |
|---|---|
| Nominal valve connection size | DN50–DN2000 |
| Pressure Rating | PN16 |
| Service temperature range | -29°C to 425°C |
| design | Triple-offset metal-seated butterfly valve with external heating jacket |
| jacket heating medium | Steam, Compatible hot gas |
| media service | Media prone to solidification, Crystallizing media, High-viscosity media |
| Connection (source-defined) | Flanged ends |
| Design standards | API 609 |
| Face-to-face dimensional standard | ISO 5752, Approved manufacturer drawing |
| Flange standards | GB/T 9113, ASME B16.5, ASME B16.47 |
| Inspection and pressure-test standards | GB/T 13927, API 598 |
| Valve body material | WCB, CF8, CF8M, Chrome-moly steel, Low-temperature steel, Nickel alloy, nickel-copper alloy, Duplex stainless steel |
| Stem material | 2Cr13, F304, F316, Chrome-moly steel, Low-temperature steel, Nickel alloy, nickel-copper alloy |
| sealing surface | Stainless steel with flexible graphite, Stainless steel, cobalt-chromium hardfacing alloy, Tungsten carbide, Nickel alloy, nickel-copper alloy |
| packing | Flexible graphite |
| Operation / closure mode | Worm gearbox, Pneumatic actuator, Electric actuator |
應用與選型指引
Specify the jacket against the heating medium available on the line (steam or compatible hot gas), then match body, stem and sealing-surface materials to the product and temperature: WCB through CF8M, chrome-moly and low-temperature steels, nickel alloys, nickel-copper alloy and duplex are offered, with flexible-graphite sealing surfaces, cobalt-chromium hardfacing alloy or tungsten carbide where abrasion and temperature demand them. Flanged ends per ISO 5752 face-to-face and GB/T 9113 / ASME B16.5 / B16.47 flange drilling; worm gearbox, pneumatic or electric operation.
常見問題
When is a jacketed butterfly valve the right choice?
When the handled media solidifies, crystallizes or turns too viscous at ambient temperature — the jacket keeps the body heated with steam or a compatible hot gas so the product stays fluid inside the valve rather than seizing the disc.
What pressure and temperature range does the BD343 series cover?
The series is rated PN16 across DN50 to DN2000, with a service temperature window of -29°C to 425°C. Body options run from WCB and stainless grades through chrome-moly, low-temperature steel, nickel alloy, nickel-copper alloy and duplex.
Which standards govern dimensions and testing?
Design is per API 609, face-to-face per ISO 5752 or approved manufacturer drawing, flanges per GB/T 9113, ASME B16.5 or ASME B16.47, and testing per GB/T 13927 or API 598.
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。