系列規格
| Valve body material | Cast Iron |
|---|---|
| Design standards | EN-1074/4 |
| valve flap materials | Cast Iron |
| press plate materials | Cast iron |
| diaphragm materials | NBR |
| Seal material | NBR |
| o ring materials | NBR |
| screw materials | 20Cr13 |
| spring washer materials | Carbon Steel |
| bolt materials | Q235 |
| washer materials | Q235 |
| nut materials | Q235 |
| prA function | Automatically reduces higher inlet pressure to steady lower downstream pressure regardless of flow rate or inlet pressure changes |
| prA pilot control | Pilot-operated regulator holds downstream pressure to pre-determined limit; closes drip-tight when downstream pressure exceeds pilot setting |
| prA size range flanged | 1-36 in (25-900 mm) flanged |
| prA size range threaded grooved | 1-16 in (25-400 mm) threaded / grooved |
| prA pressure rating | Ductile iron: 250 psi (150 Class flanged), 400 psi (300 Class flanged / grooved / threaded) |
| prA body materials | Ductile Iron, Cast Steel, Bronze |
| prA trim materials | Bronze standard, stainless steel optional |
| prA seal materials | Disc: Buna-N rubber, Diaphragm: nylon-reinforced Buna-N rubber, Stem, nut and spring: stainless steel |
| prA anticavitation trim | Anti-cavitation trim option for high pressure drop, reducing noise and cavitation damage |
| prA low flow bypass | Integral low-flow bypass pressure regulator variants available for space savings |
| prA closing speed control | Optional closing speed control kept at least three turns off its seat |
| prA pilot train | Main valve + restriction fitting + pressure reducing pilot control |
| prB size range | DN32-DN1400 |
| prB pressure rating | PN10, PN16, PN25, PN40 |
| prB function | Reduces higher variable inlet pressure to constant lower outlet pressure, independent of flow and inlet changes |
| prC size range | DN65-DN600, flanged, ductile iron, PN10/PN16 (reduced bore) |
| prC media temperature | Water and neutral liquids to max 70°C, reduced bore |
| prC function | Diaphragm-operated pilot control valves automatically reduce higher inlet pressure to lower outlet pressure, held constant regardless of flow or inlet changes |
| prC body materials | Ductile iron body and bonnet with 300 micron fusion bonded epoxy coating to DIN 3476 (WRAS-DVGW/W270/UBA) |
| prC internals | Non-coated internals stainless steel AISI 316 |
| prC seat design | Lifted seat to avoid cavitation damage |
| prC diaphragm design | Non-symmetric axial diaphragm position reduces stretch/stress near closed position |
| prC rubber approvals | Rubber components approved to EN 681-1, KTW, W270, ACS, WRAS |
| prC pilot system | Modular compact pilot system with distribution block, high-capacity back-flushable 100 mesh filter and balanced pilot valve |
| prD size range | 2-8 in (50-200 mm) |
| prD flange class | Class 150, Class 300 flanges |
| prD function | Automatically reduces higher inlet pressure to steady lower discharge pressure regardless of flow or inlet fluctuations |
| prD actuation | Diaphragm-actuated hydraulically operated design, stainless steel fasteners |
| o ring | NBR |
| hex bolts | Q235 |
| flat washers | Q235 |
| hex nuts | Q235 |
| flange standard | EN 1092/2 |
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
先導式減壓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。
先導式減壓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。
先導式減壓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。