針閥 · 提升塞式儀表閥
高壓提升塞式儀表閥
高壓提升塞式儀表閥是針閥家族的面板與儀表版本：開啟時塞完全抬離流道，提供直通雙向流動、高容量與可通條疏通性，閥桿後座尖端使填料可在帶壓情況下於線調整。基準頁將該結構額定至 6,000 psig（413 bar）與 -65 至 400 F（-73 至 204 C），孔口 0.187 吋（Cv 0.85）與 0.250 吋（Cv 1.65），閥體 316 SS 與 Alloy 400，PTFE 與 PEEK 填料，Acetal、PFA 與 PEEK 閥座，入口 1/4 至 3/4 吋 NPT（可選 2 吋加長入口），出口 1/4 至 1/2 吋 NPT。
屬於 提升塞式儀表閥 系列
最後更新： 2026-11
規格
| Service temperature range | -65 to 400 °F (-73 to 204 °F) |
|---|---|
| Pressure Rating | up to 6,000 psig (413 bar) |
| orifice options small | 0.187 in orifice (max Cv 0.85) |
| orifice options large | 0.250 in orifice (max Cv 1.65) |
| Valve body material | 316 SS, Alloy 400 |
| Packing Materials | PTFE (standard), PEEK |
| Seat material | Acetal, PEEK, PFA |
| inlet connections | 1/4 NPT, 1/2 NPT, 3/4 NPT |
| extended inlets | 2 in extended inlets available |
| outlet connections | 1/4 NPT, 1/2 NPT |
| sour gas option | Sour gas materials to NACE MR0175 / ISO 15156 available (-SG option) |
| flow feature | Bidirectional straight-through flow; rising plug fully exits the bore; back-seating stem tip for inline packing adjustment |
應用與選型指引
Select this execution for gauge, panel and instrument takeoffs where the valve spends most of its life open and must present minimal pressure drop - the rising plug gives a straight-through path that a conventional needle valve cannot. Specify PFA or PEEK seats against aggressive media, PEEK packing where service temperature excludes PTFE, and 2 in extended inlets for lagged or hot pipework. Sour gas service to NACE MR0175 / ISO 15156 and special cleaning to ASTM G93 Level C are orderable options.
常見問題
What does the rising plug do that a conventional needle stem does not?
The plug lifts completely out of the bore, leaving a straight-through, bidirectional flow path - high capacity, low pressure drop, and a passage that can be rodded clean. A needle stem always partly obstructs the orifice. The back-seating stem tip additionally isolates the packing while the valve is open, so packing can be adjusted inline under pressure.
Which flow coefficients do the two orifice sizes give?
The benchmark page lists a 0.187 in orifice at a maximum Cv of 0.85 and a 0.250 in orifice at a maximum Cv of 1.65. Size the orifice from the required instrument bleed or gauge flow - the larger orifice doubles capacity but reduces control fineness.
What material options apply at temperature extremes?
The execution is rated -65 to 400 F (-73 to 204 F per the benchmark listing). PTFE packing is standard with PEEK for higher temperature or extrusion resistance; seats come in Acetal, PFA and PEEK, so aggressive media can be matched with a fluoropolymer seat while keeping the 316 SS or Alloy 400 body. Sour gas materials to NACE MR0175 / ISO 15156 and ASTM G93 Level C special cleaning are orderable options.
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。