規格
| Valve body material | SS316L, Carbon Steel, Cast Iron, Ductile Iron |
|---|---|
| Disc Materials | Aluminium Bronze, Carbon Steel, Cast Iron, Ductile Iron, SS304, SS316 |
| Stem material | SS410, SS420, SS416, SS304, SS316, nickel-copper alloy |
| Seat material | EPDM, NBR, Viton, PTFE |
| Packing Materials | Graphite, PTFE |
| Nominal valve connection size | DN50 to DN2000 |
| Pressure class / nominal rating designation | PN10 to PN40, Class 150 |
| End connection types | Wafer |
| Operation / closure mode | Lever Operated, Gear Operated, Electric Actuated, Pneumatic Actuated |
| Design standards | API 609 |
| Face-to-face dimensional standard | API 609, MSS SP-67, MSS SP-68, BS EN1092 |
| Flange standards | ASME B16.5, DIN 2501 |
| Inspection and pressure-test standards | API 598 |
應用與選型指引
Wafer pattern suits sandwich installation between standard flanges where lug or double-flanged bodies are not required (no dead-end service, no downstream piping disassembly under load). DN50 to DN2000 makes it a large-diameter workhorse; seat lining selection (EPDM, NBR, Viton, PTFE) follows the medium and temperature. Low-carbon SS316L body option is for welded installation where sensitization matters. Disc material is matched to the medium against the body — the benchmark lists six disc grades for exactly this reason.
常見問題
Wafer vs lug butterfly valve — which pattern do I need?
A wafer body is clamped between two flanges and is the lighter, cheaper pattern, but it cannot act as a line-stop: remove downstream flange bolts and the line loses its valve. A lug body has threaded lugs so each side can be disconnected independently — that is the pattern for dead-end service or maintenance isolation. Both share the same benchmark seat and operation options in SS316L execution; pick by installation need, not by price alone.
Which seat lining material should I choose?
The benchmark page lists EPDM, NBR, Viton and PTFE linings. EPDM is the default for water and steam-condensate service, NBR covers oils and hydrocarbons, Viton extends temperature and chemical resistance for aggressive media, and PTFE gives the widest chemical envelope at the cost of higher seating torque. Match the lining to the medium and temperature, and confirm the pairing at quotation — the wrong lining, not the body, is the usual failure point.
What information is needed to quote an SS316L wafer butterfly valve?
Provide nominal diameter (DN50 to DN2000), pressure rating (PN10 to PN40 or Class 150), body and disc material preference, seat lining against the medium, operation (lever, gear, electric or pneumatic), and the flange standard the valve will be clamped between. For actuated versions add the actuation supply and any fail-safe requirement.
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。