Vacuum conveyor for the food industry Nol-Vac M394

Overview
The Nol-Vac M394 by NTE Process is a dense-phase pneumatic vacuum conveyor engineered for moderate flow rates and short conveying distances. It handles a wide range of powders and granules used in industrial processes, offering a compact, clampable design for rapid product changeover.

Recommended operating range
NTE Process recommends this conveyor for flow rates from a few kg/h up to 3500 L/h and conveying distances up to 50 m to minimise segregation and product degradation.

Design and construction
The unit comprises four main components: vacuum pump, filter system, discharge valve and body. All components are available in a tool-free clamp version for quick disassembly. The body features a discharge angle >70° to facilitate product release and the overall footprint is compact for constrained installations.

Available versions

• Basic Version: for chemical and food industries
• Sanitary Version: for pharmaceutical and dairy sectors (DAIRY, GMP)
• Light Duty Version: for plastics and related industries
• ATEX Version: for Dust and Gas zones
• PLUS Version: with Air Assist® for longer distances, multiple bends or difficult-to-flow/fragile products

Sizes (according to required flow rates)

• 1000 mod. 394-1000
• 1500 mod. 394-1500
• 2500 mod. 394-2500
• 3500 mod. 394-3500

Accessories

• Multi-Venturi pneumatic pumps
• Application-specific filters
• Customised piping, couplings and suction lances
• Dual control: electro-pneumatic or PLC integration
• Compatibility with Air Assist® dense-phase vacuum conveying

Typical applications
The Nol-Vac M394 is typically used to feed blenders, reactors and packaging machines from big bags, bag breaker stations, drums and similar feed points.

Technical characteristics / specifications

• Technology: dense-phase pneumatic suction (vacuum) conveying
• Suitable materials: powders and granules (e.g., coffee beans/roasted coffee, ground coffee, icing sugar, pea flour, dehydrated carrots, maltodextrin, PVC powder, activated carbon, calcium carbonate, sugared almonds, pharmaceutical tablets, pralines, milk powder, soya flour)
• Recommended flow rates: from a few kg/h up to 3500 L/h
• Recommended conveying distance: up to 50 m to avoid segregation and product degradation
• Main components: vacuum pump, filter system, discharge valve, body
• Maintenance/changeover: clamp design for tool-free disassembly and fast product changeover
• Body design: discharge angle >70° to ease emptying
• Versions: Basic, Sanitary (DAIRY, GMP), Light Duty, ATEX (Dust & Gas), PLUS (with Air Assist®)
• Sizes: 394-1000, 394-1500, 394-2500, 394-3500
• Control options: electro-pneumatic or PLC
• Optional accessories: Multi-Venturi pumps, application-specific filters, customised piping/couplings/suction lances, Air Assist® compatibility