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一體式閥帽針閥
一體式閥帽針閥服務於不希望頻繁維護填料的儀表與通用計量用途：閥帽與閥體一體成型，活載人字形填料在高循環與溫壓動態變化下維持閥桿密封。產品範圍涵蓋工作壓力至 6000 psig、-40°C 至 315°C 服務，閥體 316 SS、Alloy 400 或黃銅，鍍鉻 316 SS V 型或 PCTFE 軟密封閥針尖端，直通或角式結構，尺寸 1/8 至 1/2 in。選型取決於所需 Cv 對孔徑、關斷或節流用途的閥針尖端型式，以及閥體材料對介質。多來源資料補充運行框架：細螺紋精密調節（多圈收回柱塞，長軸向行程換取微小徑向變化）、標定低流量計量任務、長錐形針幾何、棒料與截止式閥體、通用 O 型環/TFE 與填料缸型式、儀表/校準/計量的精確低流量控制、相較開關型球閥與閘閥的漸進錐形閥桿調節、參考內件為冷作硬化 316 SS 閥體配玻璃纖維填充 PTFE 填料與 17-4 PH 閥桿、專用系列至 60,000 psig MAWP 與 1,200°F 的參考包絡、抗振預緊鎖定填料壓蓋螺紋、雙向流動，以及閥桿抬升速度提高 2 倍以上以延長閥座壽命的快速結構。
屬於 針閥 系列
最後更新： 2026-10
系列規格
| End connection types | Duolok tube end, Unilok tube end, Griplok tube end, NPT pipe end, BSPT pipe end |
|---|---|
| Valve body material | 316 SS, Alloy 400, brass |
| Maximum allowable working pressure (MAWP) | Up to 6000 psig |
| Temperature (source-defined) | -40°C to 315°C (-40° to 600°F) |
| packing | Live-Loaded PTFE and PEEK chevron packing |
| stem tip | Chrome-plated 316 SS vee-type, PCTFE soft-seal |
| patterns | Straight, Angle |
| end connection sizes | 1/8 to 1/2 in. (6 to 8 mm Duolok only) |
| fine thread precision | Fine-threaded screw takes many turns to retract the plunger, making precise flow-rate regulation easy; long axial travel converts to small precise radial change |
| metering duty | Used in flow-metering duty where a constant, calibrated, low flow rate must be maintained over time |
| needle geometry | Long, tapered, needle-like point on the stem end is the distinguishing feature |
| body designs | Bar-stock bodies are common; in globe-type builds a ball swivels in the body |
| stem packing styles | Two generic stem-packing styles: an O-ring with TFE backing rings, or a TFE packing cylinder; replaceable seats ease maintenance |
| precision faq | Precise flow control in low-flow applications for instrumentation, calibration and metering systems |
| fine regulation vs onoff | Unlike ball or gate valves designed for on/off control, needle valves give fine flow regulation through gradual tapered-stem adjustment |
| industries | Oil and gas, pharmaceutical manufacturing, laboratory systems, hydraulic and pneumatic applications |
| body material options ref | 316 SS standard at reference executions, with carbon steel, brass and Alloy 400 options |
| trim materials ref | Reference trim: 316 cold-worked stainless steel body, glass-filled PTFE packing, 17-4 PH stem |
| mawp hp series ref | Reference executions reach MAWP up to 60,000 psig (4136 bar) on high-pressure series |
| temp rating ref | Reference NPT-execution rating: -100°F to 600°F (-73°C to 316°C); series solutions span pressure to 10,000 psi and temperatures up to 1,200°F |
| end connections ref | Reference end connections: male/female NPT, tube fittings, ISO threads from 1/8 in. up |
| integral bonnet series ref | Integral-bonnet construction is offered as a dedicated series at reference executions (NV and SV integral-bonnet lines alongside union-bonnet and high-pressure lines) |
| vibration resistant gland | Packing-gland/body thread interface uses a preload locking internal thread form resistant to vibration, eliminating external locking devices |
| bidirectional flow | Bi-directional flow capability simplifies system designs |
| quick turn option ref | Quick-turn executions lift the stem off the seat over 2x faster, reducing throttling and increasing seat life, with fewer than half the turns to full open |
範圍與來源備註
| pressure envelope | Pressure envelope: reference series reach 10,000 psi ratings and 60,000 psig MAWP on high-pressure builds, while the tenant page caps at 6000 psig - the tenant sits in the low/mid segment of the referenced envelope. |
|---|---|
| temperature envelope | Temperature envelope: reference NPT executions rate -100°F to 600°F (-73°C to 316°C) and series solutions reach 1,200°F, versus the tenant -40°C to 315°C band - the tenant excludes the cryogenic -73°C execution segment. |
| packing style | Packing style: the referenced trim uses glass-filled PTFE packing with a preload-locking gland thread, while the tenant specifies live-loaded PTFE/PEEK chevron packing - live loading versus preload thread locking are different anti-vibration approaches. |
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。
常見問題
一體式閥帽針閥的報價詢問應包含哪些內容？
執行標準與壓力等級、公稱口徑、閥體與閥座材質、介質及溫度、目的地——缺失的資訊會在報價過程中確認。
一體式閥帽針閥提供哪些口徑與壓力等級？
本頁面尚未公布該閥門經驗證的口徑與壓力等級範圍——適用於您工況的口徑與壓力等級會在報價過程中提出並確認。請在詢問時附上工況條件，選型結果會在報價中說明。
一體式閥帽針閥提供哪些閥體材質？
本頁面尚未公布該閥門經驗證的閥體材質範圍——適用於您工況的閥體材質會在報價過程中提出並確認。請在詢問時附上工況條件，選型結果會在報價中說明。