Pumps for managing stormwater

Varisco self-priming centrifugal pumps are successfully used by Costieri d’Alesio, an Italian company specialized in the handling and storage of petroleum and energy products on behalf of major Italian maritime companies. The self-priming pumps from the J series are employed for the removal of stormwater accumulated in containment basins located beneath storage tanks for petroleum products. Specifically, the J Series – model JX 4-160 P10 ST20 BASE, compliant with the ATEX directive, is used.

29 April 2025

System Application Features

Required flow rate: 60 – 140 m³/h
Handled fluid: Polluted and dirty stormwater
Head: Variable based on backpressure
Discharge pressure: +0.5 / 1.5 bar
Flow regulation: via discharge valve

Application Context

Varisco self-priming pumps for fluids with suspended solids and pollutants are used to suction stormwater from containment basins beneath tanks storing contaminating fluids (intended for the collection of potential leaks) and to bottom-fill buffer tanks for subsequent transfer to the treatment plant.

By bottom-filling, the system head varies according to pump flow rates and backpressure. Thanks to their self-priming capability and operation without a foot valve, these pumps allow installation with variable suction heights, thus avoiding clogging, loss of prime, and system downtime.

Additionally, dry installation and coupling with standardized IEC motors make Varisco pumps an optimal solution for facilitating maintenance interventions and ensuring maximum operability even in critical and potentially explosive environments.

Varisco self priming pumps for stormwater transfer

Technical Training and Visit to the Varisco Facility

Varisco Italian Team was pleased to host Tommaso Nencini and Daniele Conti, from the Technical Office and Maintenance Department of Costieri d’Alesio S.p.A., at our headquarters in Padova, Italy

The visit was organized on the occasion of the technical refresher training led by Carlo Recaldini, Varisco Product Specialist and Business Development Manager for Team Italy, titled "Concepts and Theory on the Use of Internal Gear Pumps and Self-Priming Centrifugal Pumps."
During the course, the operating principles, practical applications, and best practices for installation and maintenance of these technologies were thoroughly discussed.

The training also provided a detailed analysis of the technical and performance characteristics of Varisco pumps, with particular focus on efficiency and reliability, hallmarks of our solutions.

Following the course, Luca Olivotto (Business Line Manager), Mattia Gobbi (Sales Area Manager), Alberto Zaggia (Service Sales Specialist), and Alessandro Gamba (Technical Support) further enriched the session with insights on company organization and Varisco’s certified original spare parts and maintenance services..

Factory Tour and Visit to the Research and Development Center

During the day, the guests were guided through our factory by Federico Gomiero, Method Engineer, to closely observe all the stages of the Varisco pump production process. Afterwards, they visited our Research and Development Center, where they had the opportunity to see the pumps in action and concretely test their performance under real operating conditions.

We sincerely thank Costieri d’Alesio S.p.A. and our local partner for participating in this technical in-depth day. We are confident that this meeting was fruitful and represented a solid starting point for future developments and increasingly synergistic collaborations.