How to Select a Pump for Cofferdam Dewatering
Select a cofferdam dewatering pump using staged drawdown, continuing seepage, head, hose routing, sediment controls, alarms and standby capacity.
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Bơm
Các cập nhật gần đây từ Borra về việc giao sản phẩm, ứng dụng kỹ thuật và câu chuyện dự án phía thị trường.
Kế hoạch bơm nước thoát lụt cho các tầng hầm ngập nước
Lập kế hoạch thoát nước khẩn cấp an toàn: kiểm tra hệ thống điện và cấu trúc, ước lượng lượng nước, chọn máy bơm phù hợp, xác định đầu bơm và đường thoát nước.
How to Size a Deep Well Pump for Irrigation
Size an irrigation deep-well pump from zone demand, tested well yield, pumping water level, total head and the selected model performance curve.
Single-Stage vs Multistage Centrifugal Pump
A single-stage centrifugal pump uses one hydraulic stage, while a multistage pump uses successive stages to add head through the assembly. The appropriate choice depends on the required flow, head, liquid, installation and operating range. More stages do not automatically mean more flow, higher efficiency or better suitability. Select the duty from verified performance data, then compare mechanical and service requirements. This guide addresses clean-water transfer and boosting without assigning undocumented pressure, stage counts or operating limits to a Borra product. Separate...
Close-Coupled vs Frame-Mounted Centrifugal Pump
Compare close-coupled and frame-mounted pumps by shaft arrangement, alignment, service access, replacement parts and the same hydraulic duty.
NPSH Available vs NPSH Required: Pump Selection Guide
Compare NPSH available and required using suction pressure, level, temperature and losses, and verify the documented margin for the actual duty.
How to Find the Duty Point on a Pump Curve
Find pump duty point from pump and system curves. Follow an illustrative calculation, compare operating cases and verify installed flow and head.
How to Read a Centrifugal Pump Curve
Read centrifugal pump head, flow, efficiency, power and NPSH curves, confirm their test conditions and check the installed system operating point.