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壓力自緊式截止閥（pressure seal）
壓力自緊式截止閥以管線壓力本身密封閥蓋接縫——內部壓力越高，墊片受力越大，因此該設計佔據螺栓閥蓋不再實用的高壓區間頂端。產品範圍涵蓋 DN50 至 DN400，Class 1500 至 Class 2500，閥體、閥蓋、支架與閘板為 A105、F304/316 系不鏽鋼、F51/F53 雙相鋼、F11/F22 鉻鉬鋼或 LCB；閥桿與填料壓蓋為 F6a 與不鏽鋼等級；閥座為鈷鉻硬面合金堆焊或不鏽鋼；石墨與 PTFE 填料配不鏽鋼石墨墊片。端接涵蓋 RF、RTJ、對焊、承插焊與 NPT。設計依 API 602 / BS 5352 / ASME B16.34，測試依 API 598 / EN 12266。選型取決於壓力等級對設計壓力、焊接端標準，以及閥座堆焊對介質。
屬於 截止閥 系列
最後更新： 2026-11
系列規格
| Nominal valve connection size | DN50 to DN400 |
|---|---|
| Pressure class / nominal rating designation | Class 1500 to Class 2500 |
| Pressure class / nominal rating designation | Class1500 to Class2500 |
| End connection types | RF, RTJ, BW, SW, NPT |
| Materials (component scope as published) | A105, F304, F316, F304L, F316L, F51, F53, F11, F22, LCB |
| Operation / closure mode | Handwheel Operated, Electric Operated |
| Service temperature range | -196°C to 570°C |
| Design standards | API 602, BS 5352, ASME B16.34 |
| Design standards | API602, BS5352, ASME B16.34 |
| Inspection and pressure-test standards | API 598, DIN 3230, EN 12266, ISO 5208 |
| Valve body material | A105, F304, F316, F304L, F316L, F51, F53, F11, F22, LCB |
| Bonnet material | A105, F304, F316, F304L, F316L, F51, F53, F11, F22, LCB |
| Stem material | F6a, F304, F316, F316L |
| Seat material | F6a+cobalt-chromium hardfacing alloy, SS304, SS304+cobalt-chromium hardfacing alloy, SS316, SS304L, SS316L |
| Packing Materials | Graphite, PTFE |
| gasket materials | SS304+Graphite, SS316+Graphite |
| pgv pressure class | ASME class 150 through 4500 |
| pgv size range | 2" to 16" (DN-50 to DN-400) |
| pgv design standards | BS 1873 / ASME B16.34 |
| pgv flange standard | std as per ASME B16.5 |
| pgv end to end | as per ASME B16.10 |
| pgv testing | API 598 / BS EN 12266-part 1 |
| pgv bw end | as per ASME B16.25 |
| pgv hardfacing | Hard facing thickness of 3 mm to ensure long and trouble free service life |
| pgv seat hardfacing | Seating surfaces in high pressure Valves are hard faced with Stellite6 or equivalent |
| pgv stem | Single piece stem in Globe Valves for superior strength |
| pgv seal principle | uses internal system pressure to tighten the bonnet seal. As pressure increases, the seal becomes stronger. |
| pgv service applications | power generation, thermal plants, refineries, petrochemical |
| wlg range | Globe 2" to 24" 600, 900, 1500 & 2500 # RF, RTJ or BW |
| wlg operation | HANDWHEEL or GEAR OPERATED, RISING STEM; OUT SIDE SCREW & YOKE (OS&Y) |
| wlg impactor handwheel | Impactor handwheel provides closing force for positive sealing against disc or back seat. |
| wlg packing | two sacrificial packings on top and bottom of the chamber made from braided graphite; remaining rings are made from flexible graphite anti extruxion rings |
| wlg gasket | soft carbon steel (silver platted) or stainless steel |
| wlg seal principle | The angular relationship in between pressure seal gasket and body utilize forces generated by pressure line to increase gasket sealing effect and long life service. |
| wlg seat ring | Seat ring with cobalt-chromium hardfacing alloy 6 overlay for better sealing service provide wear, abrasion and erosion resistance. Seat ring is welded to the body to provide tight joint. |
| wlg disc design | Body guided plug disc designed to avoid vibration, bending of the stem and/or misalignement during opening, closing or trhottle service. |
| wlg yoke sleeve | Yoke sleeve design permit removal from from the yoke while the valve still in service. |
| wlg bom wc6 | 1 "T" pattern body ASTM A217 GR. WC6, 6 Seat ring ASTM A-217 GR. WC6 & Co-Cr-W overlay, 9 Gasket Mild steel (100 HB) silver plated, 13 Guided plug ASTM A-217 GR. WC6 or ASTM A182 GR. F11 & Co-Cr-W overlay, 16 Stem ASTM A-182 GR. F6A CL2 |
| wlg design standard | Design in accordance with ASME B16.34. |
| wlg testing | Test in accordance with API-598. |
| vlg product scope | PRESSURE SEAL GLOBE VALVES CARBON, ALLOY OR STAINLESS STEEL |
| vlg flange | Flange dimensions are in accordance with ASME B16.5. Flanges are welded on. |
| vlg body guided disc | Body guided disc eliminates side thrust and provides longer disc, seat and body life. |
| vlg impactor handwheel | Impactor Handwheel for tight shutoff. |
| vlg body form | Body made of superior strength forgings and optional cast steel. |
| vlg design standard | Designed to ASME B16.34. |
| vlg stem | Non-rotating stem. |
| vlg seating | Hardfaced seating faces resist erosion. |
| vlg packing option | Optional live-loading of packing. |
| lng range | 2" to 18" Class 600, 2" to 18" Class 900, 2" to 18" Class 1500, 2" to 18" Class 2500, 2" to 12" Class 3100, 2" to 12" Class 3500 |
| lng flow guidance | It is advisable not to use a Globe valve for flow control below 10% of full opening |
| lng body patterns | Globe valves shall be either Y-Pattern or T-Pattern based on body profile. |
| lng operation | All globe valves close by rotating the handwheel clockwise and open by rotating counter-clockwise. |
| lng position indication | For all globe valves, stem guide is used for position indication and open and close indication is available in valve yoke. |
| lng seal principle | internal fluid pressure-force on the bonnet increases the compressive loading on the sealing gasket |
| lng bonnet context | Pressure seal bonnet valves are a compact alternative to bolted bonnets, especially for high pressure applications. |
| yoke materials | A105, F304, F316, F304L, F316L, F51, F53, F11, F22, LCB |
| wedge materials | A105, F304, F316, F304L, F316L, F51, F53, F11, F22, LCB |
| gland materials | F6a, F304, F316, F3304L, F316L |
| seat ring materials | F6a+cobalt-chromium hardfacing alloy, SS304, SS304+cobalt-chromium hardfacing alloy, SS316, SS304L, SS316L |
| packing | Graphite, PTFE |
| gasket | SS304+ Graphite, SS316+Graphite |
| inspection testing | API598, DIN3230, EN12266, ISO 5208 |
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
壓力自緊式截止閥（pressure seal）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。
壓力自緊式截止閥（pressure seal）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。
壓力自緊式截止閥（pressure seal）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。
請求壓力自緊式截止閥（pressure seal）報價
在此提交需求——可直接報價的詢問應說明適用標準與等級、口徑、材質、介質、溫度與目的地.
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