Custom vacuum solutions improve rail system safety and reliability
The application
Vacuum toilet systems are a standard feature in modern passenger trains, but they often operate alongside air critical systems such as braking. When these systems share a single compressed air supply, inefficient air use can place unnecessary strain on the overall system and introduce potential safety risks.
A leading rail equipment manufacturer identified the need to improve the efficiency of its vacuum toilet system without compromising performance, reliability or integration with existing components.
The challenge: reducing air consumption without compromising safety
Both the toilet system and the air braking system relied on the same compressed air supply, creating periods of high demand that could affect system stability. The manufacturer required a new solution that would:
Reduce air consumption from the toilet system
Maintain full toilet performance under all operating conditions
Preserve braking system reliability and availability
Fit within the existing system footprint
Connect to current valves and fittings without redesign
Withstand exposure to harsh waste compounds
Deliver at least five years of reliable operation without maintenance or replacement
Any solution needed to improve efficiency while integrating seamlessly into the existing rail platform.
The solution: a custom engineered vacuum generator
We worked closely with the manufacturer’s engineering team to design a custom vacuum generator tailored to the system requirements. Using a custom generator body based on the NJ Series vacuum generator, we developed a true drop in solution that accepted all existing valves and fittings.
The redesigned generator reduced overall air consumption, easing the load on the shared compressed air supply while maintaining full vacuum toilet performance. Chemical compatibility was engineered into the design to ensure durability in harsh waste environments, supporting long service life with minimal maintenance.
The compact, cost effective solution was straightforward to install and fully aligned with the manufacturer’s performance and reliability expectations.
The result: safer, more stable rail operation
The custom vacuum solution delivered measurable benefits across safety, efficiency and lifecycle performance:
Lower air demand from the toilet system
More available compressed air for the braking system
Safer and more reliable train operation
Maintained full toilet performance under all conditions
Improved stability across all compressed air functions
Long service life with extended maintenance intervals
Simple installation with no system redesign required
By reducing unnecessary air consumption, the manufacturer improved overall system balance while enhancing passenger safety and operational reliability.
Vacuum solutions for demanding rail applications
This project demonstrates how custom engineered vacuum solutions can support critical rail systems without compromising safety or performance. By combining application insight with adaptable vacuum technology, we help rail manufacturers improve efficiency, extend system life and meet increasingly stringent reliability requirements.
Find out more about our custom solutions for rail applications.