Pulsafeeder Pulsa 7440

Pulsafeeder Pulsa 7440 is selected for chemical dosing and process injection where a large hydraulic diaphragm metering pump must deliver controlled flow across demanding process conditions. Pulsa Series pumps are used in chemical processing, petrochemical, oil and gas, water and wastewater treatment and power generation. For buyers and engineers, the main task is to select the correct capacity, pressure, wet-end materials and valve arrangement for the chemical and the full operating range. The Pulsa Series uses a hydraulically balanced diaphragm positive-displacement principle. A hydraulic management system supports consistent diaphragm movement, while an internal bypass valve protects the pump during system upset conditions. Depending on configuration, the range can use flat diaphragms or HYDRAtube designs and different valve arrangements for higher flows, slurries or difficult liquid behaviour. For Pulsafeeder Pulsa 7440, Pulsafeeder lists flow up to 1,667 l/h and pressure up to 221 bar. The series is specified with ±1% steady-state accuracy and compliance with API 675, CE and ATEX. Exact temperature capability, viscosity, wet-end materials, valve type, suction conditions and control method depend on the selected configuration and must be checked against the actual process. For lifecycle cost, the hydraulic protection system and service-oriented KOPkit concept support planned maintenance and recovery from process upsets. Correct sizing and regular inspection of diaphragms, valves and hydraulic condition remain important for process continuity. AxFlow can support selection, spare-parts identification, service planning and replacement assessment for the installed model.