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固定孔口雙調節閥
固定孔口雙調節閥在雙調節內件上增加標定孔口，流量由固定節流兩側壓差讀取——廠商註明一體固定孔口比可變孔口設計精度更高、設定更容易、連接更少。產品範圍涵蓋青銅 PN25/PN16 系列 DN15 至 DN50（含小流量與超小流量變體）與球墨鑄鐵 PN16 / Class 125 系列 DN65 至 DN300，小口徑為 BS EN 10226-2（ISO 7-1）錐形螺紋或 BS 2779（ISO 228）平行螺紋，球墨鑄鐵系列為法蘭端。選型取決於調試標準要求的測量精度、流量區間（標準/低/超低），以及管件的端接標準。
屬於 平衡閥 系列
最後更新： 2026-10
系列規格
| End connection types | End Connections Flanged |
|---|---|
| Valve body material | Bronze, Ductile Iron |
| bronze line | D931 DN15 to DN50 Fixed Orifice Double Regulating Valve (FODRV) – Bronze PN25 |
| low flow variant | D933 DN15 Low Flow Fixed Orifice Double Regulating Valve (FODRV) – Bronze PN16 |
| ultra low flow variant | D934 DN15 Ultra Low Flow Fixed Orifice Double Regulating Valve (FODRV) – Bronze PN16 |
| ductile ansi line | DA941 DN65 to DN300 Fixed Orifice Double Regulating Valve (FODRV) – Ductile Iron Class 125 |
| ductile pn16 line | DM941 DN65 to DN300 Fixed Orifice Double Regulating Valve (FODRV) – Ductile Iron PN16 |
| design principle | The integral fixed orifice design offers greater accuracy than the variable orifice design valves |
| threaded connections | taper threaded to BS EN 10226-2 (ISO 7-1) formerly BS 21 |
| parallel threads | BS 2779 (ISO 228) parallel |
| fv design focus | Single unit Y-pattern globe valve incorporating a fixed orifice plate flow measurement unit, with a pair of measuring plugs |
| fv measurement accuracy | +/-5% across all opening settings |
| fv design standard | BS 7350 |
| fv threaded connection | EN 10226-1 (ISO 7) taper thread |
| fv working pressure | 25 bar |
| fv shell test pressure | 37.5 bar (x1.5) |
| fv seat test pressure | 27.5 bar (x1.1) |
| fv application | Hydronic balancing of heating and cooling systems |
| fv temperature range | -10 deg C to 120 deg C |
| fv suitable medium | Water |
| fv body materials | Bronze |
| fv bonnet materials | DZR brass (DN15 to DN32), bronze (DN40 to DN50) |
| fv stem materials | DZR brass |
| fv disc materials | DZR brass (DN15 to DN20), DZR brass + PTFE (DN25 to DN50) |
| fv orifice insert materials | DZR brass |
| fv seal materials | EPDM (O-ring) |
| btt size range | DN65 to DN300 (WRAS approved); DN350 to DN600 (standard design) |
| btt operating pressure | 233 psi (16 bar) |
| btt design standard | BS EN 12334 |
| btt approvals | WRAS approved |
| btt end connections | PN16 flanged (BS EN 1092-2) |
| btt coating | Fusion bonded epoxy (FBE), RAL 5015 blue |
| btt body materials | Ductile iron with fusion bonded epoxy (FBE) coating |
| btt operation | Lockable handwheel with position indicator |
| btt applications | Potable water distribution and balancing, HVAC chilled and hot water circuits, mechanical service systems, pump circuit and equipment flow control, industrial process water regulation |
| ht design focus | Single unit Y-pattern globe valve with integral orifice plate forming a fixed orifice flow measurement unit, with regulation and isolation capacity |
| ht double regulating feature | Valve can be used for isolation and reopened to its pre-set position to maintain required flow rate |
| ht measurement accuracy | 5% accuracy class at all open positions in accordance with BS 7350: 1990 |
| ht design standard | BS 7350: 1990 |
| ht size range | DN65 to DN300 |
| ht nominal pressure | PN16 |
| ht temperature range | -10 deg C to 120 deg C |
| ht body materials | Ductile iron |
| fv size range | DN15, DN20, DN25, DN32, DN40, DN50 |
| fv kvs full open | Kvs (fully open): 2.2, 4.6, 8.5, 16.7, 26.1, 43.2 (DN15-DN50 order) |
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
固定孔口雙調節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。
固定孔口雙調節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。
固定孔口雙調節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。