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This custom-engineered solution features two Liquid Ring Vacuum Systems from the NASH Vectra XL-series, meticulously designed to handle demanding industrial processes. The system utilizes stainless steel construction and operates as a fully integrated recirculation system. 

The client, operating an ATEX-certified fully closed belt filter, leverages this vacuum system to maintain optimal vacuum levels, ensuring saturated gases are efficiently extracted and recirculated back above the filter. By keeping acidic gases contained within a controlled loop, the system delivers exceptional safety and reliability through advanced safeguarding instrumentation in compliance with ATEX standards. 

The shaft sealing employs double mechanical seals (MS), further supported by an API Plan 53A flushing system, also provided by NASH, ensuring both safety and performance. 

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Key Benefits

  • Compact Design: Minimizes floor space requirements. 

  • High Efficiency: Delivers superior vacuum performance and energy savings. 

  • Process Upset Tolerance: Handles variations in operating conditions without compromising functionality. 

  • Wide Operating Range: Suitable for both low-pressure and high-pressure applications. 

  • Durability: Stainless steel construction for extended lifespan. 

  • Flexibility: Supports a variety of ISO and DIN seal standards. 

  • Patented Technology: Incorporates innovations for improved efficiency and reliability. 

Key benefits system page

Performance Metrics

  • Capacity: 200 to 9,000 m³/h 

  • Vacuum: Up to 33 mbarA 

  • Pressure: Up to 2 barG 

Key Features

  • Compact Design: Conserves valuable plant space. 

  • Universal Stuffing Box: Flexible design compatible with various seal types. 

  • ATEX Certification: Fully compliant for use in explosive environments. 

  • Modular Construction: Streamlines maintenance and customization. 

  • Superior Water Handling: Tolerates process variations and excess water flow. 

  • Patented Gas Scavenging Technology: Enhances operational efficiency. 

  • Shrouded Rotor: Improves blade strength and extends operational lifespan. 

Advanced Technologies 

  • Large Porting Areas: Efficiently handles water flow and reduces wear. 

  • Inlet Spray Nozzles: Enable enhanced gas condensing capabilities. 

  • External Clearance Adjustment: Simplifies maintenance for optimal performance. 

Metso key features

Technical Specifications

System Components:


Each vacuum system includes a NASH Vectra XL-series pump, electric motor, recirculation pump, heat exchanger, separator, and ATEX-certified valves and instrumentation.

Performance Metrics: 

  • Speed: 1,470 rpm 

  • Vacuum: 500 mbarA 

  • Capacity: 1,500 m³/h 

  • Power Consumption: Max 41.5 kW 

  • Speed: 1,470 rpm 

  • Vacuum: 500 mbarA 

  • Capacity: 800 m³/h 

  • Power Consumption: Max 21.3 kW 

Material Construction: 

  • Main components, including pump, piping, and separator, are constructed with stainless steel to ensure durability and corrosion resistance. 

Certifications: 

  • CE Marking, ATEX Compliance, Pump Test and Material Certificates 

Vectra XL for Metso system

Read Our Case Study

Learn how Metso and Nash collaborated to deliver a high-performance, ATEX-certified vacuum system upgrade, enhancing safety, efficiency, and performance.
Case Study: The Hallmarks of Metso's Vacuum System Upgrade

Applications & Industries

Industries Served: 

  • Process Industry 

  • Chemical Industry 

  • Petrochemical Industry 

…and many more 

Key Applications: 

  • Reactions 

  • VCM Recovery 

  • Explosive Gas Compression 

  • Distillation 

  • Evaporation 

  • Filtration 

  • Solvent Recovery 

  • Drying 

  • Extrusion 

process industry

Contact Our Experts

Have questions or need more information? Choose one of the options below to contact us, request a service, or request a quote
Contact UsRequest a QuoteRequest Service, Parts or Support

Read Our Case Study

Discover how Metso and Nash's expertise in the chemical and petrochemical sectors led to a groundbreaking solution that enhances environmental performance and reduces operational costs.

Case Study: The Hallmarks of Metso's Vacuum System Upgrade with Nash

Read the Case Study
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This solution features two NASH Vectra XL-series Liquid Ring Vacuum Systems with stainless steel construction, designed for demanding industrial processes.