規格
| Valve body material | A105, F304, F316, F304L, F316L |
|---|---|
| Ball material | F304, F316, F304L, F316L |
| Seat material | PTFE, RPTFE |
| Bonnet material | A105, F304, F316 |
| Stem material | SS316, SS304 |
| Nominal valve connection size | 1/4" to 3" |
| Pressure class / nominal rating designation | Class800 to Class2500 |
| Design standards | ASME B16.34 |
| Face-to-face dimensional standard | DIN3202 |
| Testing procedures and requirements | API598 |
| Working temperature (source-defined) | -20℃~150℃ |
應用與選型指引
Select this execution for small-bore, high-pressure lines - injection, sampling, chemical and instrumentation service - where the bore is too small for cast construction to be economic and the class is too high for a standard cast ball valve. Pick the body forging (A105 for general service, F304/F304L/F316/F316L for corrosive media) against the medium, and confirm the -20 to 150 C working window and DIN 3202 face-to-face against the piping layout.
常見問題
Why forged steel for a two piece ball valve?
At 1/4" to 3" and Class 800 to Class 2500, a forged A105-family body gives a denser, defect-free pressure boundary; cast bodies at this size carry proportionally thicker walls and harder qualification. The benchmark page lists body, bonnet and nut across A105, F304, F316, F304L and F316L, so the same forging route covers the boundary end to end.
Which seat and stem materials does this execution use?
The benchmark page lists PTFE and RPTFE seats with a PTFE gasket, packing and thrust washer, SS304 packing gland, and SS316 or SS304 stems. RPTFE is the hotter, stiffer seat option inside the -20 to 150 C window; match it against the medium and cycle count.
What information is needed to quote a two piece forged steel ball valve?
Nominal size within 1/4" to 3", pressure class from Class 800 to Class 2500, body and trim forging (A105, F304, F316, F304L or F316L against the medium), seat material (PTFE or RPTFE), and the applicable standards - ASME B16.34 design, DIN 3202 face-to-face, API 598 test. Those points fix the quote in one pass.
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。