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壓力自緊式旋啟逆止閥
壓力自緊式旋啟逆止閥以管線壓力本身加載閥蓋墊片，因此電力與高壓製程廠在螺栓閥蓋結構需要笨重法蘭的場合採用它。產品範圍涵蓋 DN65 至 DN350，Class 1500 至 Class 2500，閥體、閥盤與鉸鏈為 WCB、WC1、WC6 或 WC9，閥座 A105/F22 配 SS316+石墨墊片。設計依 API 6D 與 ASME B16.34，面距依 ASME B16.10，連接尺寸依 B16.5/B16.47/B16.25。選型取決於壓力等級對集箱壓力，以及鉻鉬閥體等級對蒸汽溫度。
屬於 逆止閥 系列
最後更新： 2026-11
系列規格
| Nominal valve connection size | DN65 to DN350 |
|---|---|
| Pressure class / nominal rating designation | Class 1500 to Class 2500 |
| Pressure class / nominal rating designation | Class1500 to Class2500 |
| Valve body material | WCB, WC1, WC6, WC9 |
| Disc Materials | WCB, WC1, WC6, WC9 |
| Seat material | A105, F22 |
| End connection types | Flanged, Butt Weld |
| Operation / closure mode | Self-acting (automatic) |
| Service temperature range | -196°C to 570°C |
| Design standards | API 6D, ASME B16.34 |
| Design standards | API6D, ASME B16.34 |
| Inspection and pressure-test standards | API 598, API 6D, MSS |
| Face-to-face dimensional standard | ASME B16.10 |
| gasket | SS316 + Graphite |
| connection standards | ASME B16.5, ASME B16.47, ASME B16.25 |
| Materials (component scope as published) | WCB, WC1, WC6, WC9 |
| psw service intent | ideal for high pressure steam, liquid, catalytic reformers, and other tough services |
| psw size range | 2 Inch – 36 Inch |
| psw pressure range | ASME Class 600 - 2500 LB |
| psw design standards | API 6D or ASME B16.34 |
| psw testing | API 598 |
| psw flange standard | ASME B16.5, ASME B16.47 (API 605, MSS SP-44) |
| psw bw end standard | ASME B16.25 |
| psw face to face | ASME B16.10 |
| psw nace | NACE 0175 |
| psw materials | ASTM A216 WCB WCC, ASTM A217 WC1, WC6, WC9, ASTM A351 CF8, A351 CF8M, A351 CF3, A351 CF3M, A351 CN7M |
| psw trim | Standard trim is cobalt-chromium hardfacing alloy faced seat and disc seat surfaces |
| psw seat ring options | Welding seat rings or Renewable seat rings |
| psw port options | Full Open and regular port as optional |
| psw orientation | Suitable for Vertical or Horizontal installation |
| flt figure classes | 600# Pressure Seal Swing Check Valves 1661 2-24′′ |
| flt figure class 900 | 900# PRESSURE SEAL SWING CHECK VALVES 1931 2-24′′ |
| flt figure class 1500 | 1500# Pressure Seal Swing Check Valve 1161 2-24′′ |
| flt figure class 2500 | 2500# Pressure Seal Swing Check Valves 1261 2-24′′ |
| flt end connections | Pressure Seal Bonnet Butt Weld Ends |
| flt materials | Cast Carbon, Stainless or Alloy Steel Materials |
| flt trim | Available in all trim configurations |
| wlp range | Swing Check 2" to 24" 600, 900, 1500 & 2500 # RF, RTJ or BW |
| wlp service intent | power generation plants with fossil, coal, thermal, gas, nuclear power plants, steam power stations |
| wlp seal principle | use the pressure line to assist in the seal of the valve with a preloaded metallic or graphite pressure seal gasket placed between body and bonnet |
| wlp gasket | soft carbon steel (silver platted) or stainless steel |
| wlp seat ring | Seat ring is welded to the body to provide tight joint |
| wlp disc overlay | Sealing areas of the disc with cobalt-chromium hardfacing alloy 6 overlay for better operation service |
| wlp damper options | Damper and counterweight options also available as per Customer request. |
| wlp installation orientation | install this valve in a horizontal position only |
| wlp closure speed | Designed to close quickly and quitely. |
| wlp design standard | Design in accordance with ASME B16.34. |
| wlp testing | Test in accordance with API-598. |
| wlp bom cf8m | BODY ASTM A351 GR. CF8M, BONNET ASTM A-351 GR. CF8M, GASKET ASTM A-182 GR. F316, SWING TYPE DISC ASTM A-351 GR. CF8M Co-Cr-W OVERLAY, HINGE PIN ASTM A276 GR 316 |
| vln cover design | The light-weight pressure seal cover remains tight regardless of pressure-temperature fluctuations. |
| vln cage unit | unique compact cage unit design comprised of all moving parts easily accessible for service |
| vln hinge pin | Eliminates pin seal leakage and provides in-line service. |
| vln hinge bearings | A sturdy disc hinge moves on four cobalt-chromium hardfacing alloy bearings, supporting the hinge pin and preventing binding. |
| vln seat finish | Forged disc/seat are Stellited, ground and lapped to a mirror finish for maximum erosion resistance and long service life. Seat rings are seal-welded to the body. |
| vln gasket standard | Standard in valves to ASME Class 2500 |
| vln product scope | pressure seal and bolted bonnet swing, tilting disc and piston check valves |
| lnt swing range | 2" to 28" -- Class 600, 2" to 28" 2" to 24" Class 900, 2" to 28" 2" to 24" Class 1500, 2" to 28" 2" to 24" Class 2500 |
| lnt operating principle | Pressure Seal Check Valves automatically open by velocity of medium and close by the gravitational force when the flow reverses or stops. |
| lnt disc types | 1) Swing type 2) Tilting Disc type |
| lnt installation | install swing check valves at a distance equal to 10 times or more the pipe diameter from the upstream elbows for better performance |
| lnt seal principle | internal fluid pressure-force on the bonnet increases the compressive loading on the sealing gasket |
| lnt bonnet context | Pressure seal bonnet valves are a compact alternative to bolted bonnets, especially for high pressure applications. |
| hinge materials | WCB, WC1, WC6, WC9 |
| Bonnet material | A105, F22 |
| washer materials | F316 |
| sealing ring | Mild Stainless Steel |
| connection dimensions | ASME B16.5, ASME B16.47, ASME B16.25 |
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
壓力自緊式旋啟逆止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。
壓力自緊式旋啟逆止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。
壓力自緊式旋啟逆止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。
請求壓力自緊式旋啟逆止閥報價
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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