規格
| Nominal valve connection size | DN15 to DN50 |
|---|---|
| Pressure Rating | PN25 |
| Service temperature range | -10 to 120 °C |
| End connection types | 1" to 2" taper threaded to BS EN 10226-2 (ISO 7-1), formerly BS 21 |
| small size connections | DN15 & DN20 (1/2" & 3/4") BS 2779 (ISO 228) parallel |
| Valve body material | Bronze |
| measurement accuracy | +/-5% on all settings (integral fixed orifice) |
| Inspection and pressure-test standards | DVGW (vibration), BS EN 331 (bend) |
應用與選型指引
Select this execution for terminal branches, fan coils, small AHUs and any circuit up to DN50 where commissioning accuracy matters - the integral fixed orifice reads plus or minus 5 percent on all settings, tighter than variable orifice readouts, with fewer connections to install and leak-test. Match the end connection to the pipework: taper threaded to BS EN 10226-2 (ISO 7-1) for 1 inch to 2 inch sizes, BS 2779 (ISO 228) parallel for DN15 and DN20, and confirm the vibration and bend testing credentials (DVGW, BS EN 331) where the specification calls them.
常見問題
What makes the fixed orifice design more accurate for commissioning?
Because the orifice is machined into the valve rather than formed by the throttle position, the differential pressure to flow relationship is fixed for every setting. The bronze commissioning range holds plus or minus 5 percent accuracy on all settings, set-up is simpler, and there are fewer test connections to install compared with a separate orifice and valve arrangement.
Which end connections does the DN15 to DN50 range use?
Sizes 1 inch to 2 inch are taper threaded to BS EN 10226-2 (ISO 7-1), formerly BS 21; DN15 and DN20 in 1/2 inch and 3/4 inch are BS 2779 (ISO 228) parallel thread. Match the thread form to the mating fitting before ordering - the two are not interchangeable.
How does the double regulating function behave during system filling and balancing?
The valve balances the circuit at its pre-set position, can be closed to isolate the branch while other circuits are commissioned, and reopens to the same pre-set position afterward - the balanced flow is retained without re-measurement. Vibration testing to DVGW and bend testing to BS EN 331 cover the mechanical robustness of the completed joint.
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。