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Nouvelles et Projets en Cours

Mises à jour récentes de Borra couvrant la livraison de produits, les applications techniques et les histoires de projets du côté du marché.

Pompe centrifuge vs pompe à membrane : différences de débit, de liquides et de sélection
Borra Pompes

Pompe centrifuge vs pompe à membrane : différences de débit, de liquides et de sélection

In a centrifugal vs diaphragm pump comparison, centrifugal pumps are generally favored for continuous, relatively smooth high-flow service with low-to-moderate viscosity, while diaphragm pumps are favored for positive-displacement metering, intermittent transfer, self-priming arrangements, higher-viscosity liquids, or duties that benefit from dry-running and solids-handling capabilities available in the specific design. Neither type is universally better. Select from flow, pressure, viscosity, solids, shear sensitivity, suction conditions, leakage tolerance, pulsation, control range, materials, energy, air or electricity, and maintenance evidence for the actual liquid.This guide...

Contrôleur de pompe jockey : Paramètres, séquence et révision du projet
Borra Pompes

Contrôleur de pompe jockey : Paramètres, séquence et révision du projet

A jockey pump controller automatically starts and stops the pressure-maintenance pump so small leaks and normal pressure loss do not start the main fire pump. Its settings must coordinate with the fire pump controller, pressure-sensing line, pump curve, system pressure, and adopted fire-protection requirements. The jockey pump should start before the main fire pump and stop after pressure recovers, while the main fire pump's automatic-start behavior remains protected. Final settings and wiring require the approved design, listed controller data, responsible engineer, and...

Soupape de décharge de pompe à incendie : Rôle, sélection et examen du système
Borra Pompes

Soupape de décharge de pompe à incendie : Rôle, sélection et examen du système

A fire pump relief valve can refer to a small casing relief valve that prevents pressure buildup from heat when a pump runs at little or no flow, or a larger main pressure relief valve used only where the approved fire-protection design requires it. These devices are not interchangeable. Selection and settings must follow the adopted fire code and standard, the authority having jurisdiction, the listed equipment data, pump curve, driver behavior, and the system pressure limits. A relief valve must never...

Sélection de pompes d'exhaure submersibles pour la construction et le drainage
Borra Pompes

Sélection de pompes d'exhaure submersibles pour la construction et le drainage

A submersible dewatering pump is selected by matching the required drawdown flow, total dynamic head, solids and abrasiveness, minimum operating depth, cable and power supply, and the site's duty cycle. It should not be chosen from outlet size or motor power alone. Establish how fast water enters, where it can legally discharge, and how the water level and hose route will change. Then plot normal and worst-case duties on a certified pump curve, verify motor loading and cooling, and specify level controls,...