規格
| Nominal valve connection size | DN50-DN300 |
|---|---|
| Pressure class / nominal rating designation | PN10/16 |
| Design standards | DIN 2501 PN6/10/16, BS5155 |
| Valve body material | QT450 Nodular cast iron |
| Seal material | Ductile Iron+Copper alloy |
| Stem material | Stainless Steel |
| medium | Water, Waste Water |
| Working temperature (source-defined) | 0 to 80℃ |
| valve type | Pilot control valve |
| Working pressure (source-defined) | 16/25 bar |
| additional standards | BS EN 1074-5, ISO 5208, BS EN 12266.1, BS EN 558-1 |
| Flange standards | JIS 10/16K, BS4504 PN16/25, ANSI#150/300 |
| setpoint adjustment | Adjustable reducing set-point |
| installation orientation | Horizontal installation |
應用與選型指引
Select this execution for water and waste-water mains where upstream pressure swings or demand varies too widely for a direct spring valve to hold a steady downstream set-point, in DN50 to DN300 PN10/16 pipework. Confirm the 0 to 80 C medium window covers the service, the 16/25 bar working pressure covers the worst upstream case, and the flange standard (DIN 2501 PN6/10/16, JIS 10/16K, BS4504 PN16/25, ANSI 150/300) matches the mating pipe. Plan for horizontal installation and an adjustable set-point at commissioning.
常見問題
What does the pilot do on a 200X pressure reducing valve?
The pilot senses downstream pressure and throttles the main diaphragm valve to hold a constant lower downstream pressure. Because the set-point is adjustable and the control loop reacts to downstream pressure, the valve compensates for upstream pressure changes and downstream flow variation instead of drifting the way a fixed spring valve can.
Which materials does the 200X execution use in the pressure boundary?
The benchmark page lists a QT450 nodular cast iron body, a ductile iron plus copper alloy seal trim, and a stainless steel stem. That combination suits water and waste water inside the 0 to 80 C working window at 16/25 bar.
What information is needed to quote a 200X pilot pressure reducing valve?
Nominal size within DN50 to DN300, the PN10/16 class against line pressure, upstream and downstream pressure targets so the set-point falls inside the 16/25 bar working range, medium confirmation (water or waste water, 0 to 80 C), and the flange standard to mate with the pipeline - DIN 2501, BS4504, JIS or ANSI per the source listing.
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。