規格
| valve type | Diaphragm actuator operated globe pneumatic control valve |
|---|---|
| Nominal valve connection size | 1/2" to 12" |
| end connection | Flanged, Welded |
| Pressure class / nominal rating designation | Class 150/300/600, PN10-64, JIS 10K-40K |
| Working temperature (source-defined) | Standard -17 to +230 C |
| Valve body material | WCB, WC6, WC9, CF8, CF8M, Alloy Steel (FEP lined) |
| Trim material | 304(cobalt-chromium hardfacing alloy), 316(cobalt-chromium hardfacing alloy), 316L(cobalt-chromium hardfacing alloy), 420, hard facing |
| gland packing | V-PTFE, PTFE, Graphite |
| guide type | Top guide |
| Flow Characteristics | Linear, Equal % |
| Control mode / signal | Throttling control, On-Off control |
| valve action | Air to Close, Air to Open |
| Actuator type / construction | Multi-spring diaphragm type |
| actuator size | 220, 270, 350, 470 |
| actuator action | Direct action, Reverse action |
| air supply pressure | 0.14, 0.16, 0.28, 0.4 MPa |
| spring range | 0.02-0.10, 0.08-0.24 MPa |
| air connection | Rc1/4" |
| ambient temperature | -20 to +70 C |
| Seat material | 304, 316 + cobalt-chromium hardfacing; PTFE |
| bonnet types | Standard type, Low temperature type, Heat dissipation type, Bellows sealing type |
| accessories | Electrical positioner, Air filter pressure relief valve, Handwheel, Reserve valve |
| lining materials | FEP (fluorinated ethylene propylene), 3 mm lining thickness |
應用與選型指引
Select this execution where the medium attacks metallic trim - acid, chlorinated and oxidising duties - and a full fluoropolymer wetted path is required at control-loop quality. Confirm the rating class, keep the standard -17 to +230 C window, and match the 0.14 to 0.4 MPa air supply and 0.02-0.10 / 0.08-0.24 MPa spring range to the plant positioner.
常見問題
What makes this execution suitable for corrosive media?
The benchmark page lists the valve body as WCB or CF8 lined with FEP, with valve plug, seat and bellow in FEP or PTFE and a PTFE bellow - the wetted components are fluoropolymer-faced rather than bare metal.
What ratings and temperatures does the benchmark execution declare?
The benchmark page declares 1/2" to 12" nominal diameter, Class 150/300/600, PN10 to PN64 and JIS 10K to 40K ratings, and a standard temperature window of -17 C to +230 C with a -20 C to +70 C ambient for the actuator.
How is the pneumatic actuator supplied?
The benchmark page lists a multi-spring diaphragm actuator in 220/270/350/470 sizes, direct or reverse action, 0.14/0.16/0.28/0.4 MPa air supply, 0.02-0.10 and 0.08 to 0.24 MPa spring ranges and an Rc1/4" air connection.
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。