Mattei BLADE 18 Rotary Vane Compressor — 18.5 kW, 3260 l/min, Direct Drive, up to 13 bar, Moldova

A problem you have already faced

• The compressor runs unloaded for 40–50% of the shift — the electricity bill exceeds any reasonable limit
• A 15 kW unit is no longer sufficient, yet stepping up to 22 kW is excessive and expensive to run
• Uneven air consumption causes frequent starts and stops — bearings and valves fail ahead of schedule
• Delivery of an original compressor from Europe takes 6–10 weeks; production halts while negotiations drag on
• Alternatives without CE and ISO documentation fail audits or insurance claims — double the expense

The hidden cost of choosing the wrong power or control type — overspending on energy and unplanned downtime — exceeds the price difference between models within three years.

What is the Mattei BLADE 18 rotary vane compressor

BLADE 18 is an industrial compressor by Italian manufacturer Mattei Group (founded 1919), from the inverter-equipped BLADE series, rated at 18.5 kW. Model code breakdown: BLADE — series with a rotary vane (lamella) compression element; 18 — block size corresponding to 18.5 kW; the absence of the SE suffix indicates the base version without an integrated receiver or dryer.

Core operating principle: the rotor is mounted eccentrically inside the stator. As it rotates, centrifugal force presses the vanes against the stator walls, forming sealed chambers whose volume decreases gradually — air is compressed without pulsation. The Maestro XB variable frequency drive varies rotor speed across 40–100% of load, continuously matching output to actual air demand on the network. The 13 bar option is rare in this power class and allows direct connection of laser-cutting machines and other high-demand equipment without an additional booster.

BLADE 18 Technical Specifications

💡 Expert tip: At 13 bar the BLADE 18 delivers 2410 l/min — 20–30% more than most 18 kW screw compressors at the same pressure. The reason: the absence of axial loads in the rotary vane block means volumetric efficiency does not drop as sharply with rising pressure as it does in a screw pair.

BLADE 18 alternatives by brand

⚠️ Important: Belt-driven alternatives (most Chinese 18 kW models) cannot achieve 100% transmission efficiency and lose 3–7% of power at the pulleys. Always compare output at the same pressure and with direct 1:1 drive.

5 mandatory parameters for checking alternative compatibility:

1. Output at your actual working pressure (not the 7 bar figure from the datasheet)
2. Drive type — direct (coupling) or belt — determines real-world efficiency
3. Inverter control range — minimum speed (40% on Mattei vs 60–70% on some alternatives)
4. Availability of the 13 bar option without replacing the entire unit
5. CE + ISO 1217 certification — required for audit and insurance claim compliance

Why Acvatron SRL — 5 solid arguments

1. Engineering selection tailored to your pneumatic system

Before issuing an invoice, the Acvatron engineer requests: actual air consumption in m³/min, load profile (steady / peak), working pressure and main line length. The specific model and version are selected on the basis of these figures — not whatever “happens to be in stock”.

2. Documentation: CE, ISO 1217, PNEUROP

Every Mattei compressor is delivered with a technical passport, CE declaration of conformity and an ISO 1217 test report. A complete document package — for commissioning, technical audit and insurance cases. Issued on the day of dispatch.

3. Availability and delivery lead time

Mattei BLADE 18 — made to order from European distributor stocks. Lead time: 2–4 weeks. Check availability on the day you enquire — a manager responds within 2 working hours.

4. Warranty and service

Warranty on the Mattei BLADE 18 compressor — 24 months. Warranty on the bearingless RSU block — up to 6 years with no hour restriction. Service (oil and filter changes, Maestro XB controller diagnostics) — carried out in Chisinau, without sending the unit to the manufacturer.

5. Direct-from-distributor pricing

Acvatron SRL is the official Mattei distributor in Moldova. The price is fixed in the commercial offer on the day of enquiry. Delivery within Moldova — 1 working day.

Mattei BLADE 18 — applications

Mechanical engineering and metalworking

• Powering pneumatic cylinders on assembly lines with variable load — the inverter eliminates pressure drops during peak demand
• Plasma and laser cutting at 13 bar — without an additional booster
• Shot blasting and sand blasting

Food industry and packaging

• Control of pneumatic valves on bottling and filling lines
• Pneumatic conveying of bulk products — stable pressure without pulsation
• Air for pneumatic distributors on packaging machines

Woodworking and furniture manufacturing

• Powering CNC machines with pneumatic workpiece clamping
• Paint booths — stable air without pressure fluctuations for consistent coating quality
• Chip blowing and chip conveying

Chemical and pharmaceutical industry

• Instrument air for process valve control — ISO 8573-1 class achieved in combination with dryer and filter
• Pneumatic dosing pumps on production lines
• Air for pneumatic conveying of powdered substances

Expert opinion

Vitaliy Boluchevsky, Chief Engineer at Acvatron SRL, 15 years in the industry:

The most common mistake when specifying the BLADE 18 is ordering the base version without a receiver when consumption is uneven. The inverter smooths out peak demand, but not completely: when several consumers start simultaneously, the Maestro XB controller still detects the pressure drop and ramps up speed. A buffer receiver of at least 200 litres eliminates this problem entirely — the compressor runs more evenly and service life increases. That is why for most applications I recommend ordering the SE version outright, or adding a separate receiver.

Standards and certificates: ISO 1217, PNEUROP PN2CPTC2, CE (Mattei Group, Italy)

How to choose an 18 kW rotary vane compressor correctly: a 6-step algorithm

6. Step 1 — Actual air consumption: Add up the consumption of all users during the peak hour (l/min). The BLADE 18 at 8 bar delivers 3260 l/min — sufficient for most production facilities with a load of up to 2.8–3.0 m³/min.
7. Step 2 — Load profile: If consumption is steady — fixed speed is suitable. If load varies by more than 30% during a shift — inverter only (BLADE 18 i). Energy savings recover the price difference in 12–18 months.
8. Step 3 — Working pressure: Most applications — 8 or 10 bar. Laser cutting, certain presses, test rigs — 13 bar. The BLADE 18 supports all three options.
9. Step 4 — Version (S / E / SE): No space for a separate receiver and dryer → SE. Dryer already installed → S. Compressor block only → base version.
10. Step 5 — Noise level: BLADE 18 — 66 dB(A). Acceptable for installation next to workstations without a soundproofed enclosure. If the requirement is below 63 dB — consider models in a sound-attenuating canopy.
11. Step 6 — Consult the Acvatron engineer: 15 minutes of discussion — and you receive a concrete recommendation with justification, not just “an 18 kW compressor from the catalogue”.

Handling typical objections

“I can buy cheaper — there is a Chinese inverter unit at 18 kW for half the price”

The price difference is real. The total cost of ownership difference is even more so. Chinese inverter compressors consume 8–15% more electricity due to lower rotor–stator pair efficiency. At 4000 operating hours per year and an energy tariff of 2.5 MDL/kWh, that is 5,000–10,000 MDL in overspending every year. In addition, the absence of CE certification makes insurance claims impossible. Calculate TCO over 5 years — the advantage of Mattei is clear.

“You do not have the version I need in stock”

The base BLADE 18 is supplied from Mattei’s European stocks within 2–4 weeks. SE versions (with receiver and dryer) and special configurations — on separate request. Call on the day you enquire — the manager will confirm current lead times and, if necessary, propose a rental compressor for the waiting period.

“I do not know whether my network can handle 400 V / 18.5 kW”

The BLADE 18 with inverter starts smoothly — inrush current does not exceed the rated working current thanks to the soft-start function in Maestro XB. This is within the capacity of most industrial 400 V / 50 A networks. The Acvatron engineer checks compatibility based on your electrical supply data — free of charge, before the invoice is issued.

Frequently asked questions

❓ What is the difference between BLADE 18 and BLADE 18i?

BLADE 18 and BLADE 18i are the same model with an inverter. The designations are used interchangeably on the website. The numeric index 18 corresponds to the block size at 18.5 kW. The letter i highlights the presence of the Maestro XB inverter, which is standard for this size within the BLADE series.

❓ What is the service life of the vanes and when do they need replacing?

The vanes of the Mattei RSU rotary block are manufactured from a specialist polymer composite. Declared service life — over 100,000 operating hours without replacement, provided the oil change schedule is observed. By comparison, most screw compressors require replacement of the rotor–stator pair every 40,000–60,000 hours. The absence of rolling-element bearings in the block eliminates sudden failure — parameter degradation is gradual and tracked by the controller.

❓ Is the BLADE 18 compatible with an existing receiver and dryer?

Yes. The base-version BLADE 18 connects to any existing receiver via the 1-inch (BSP) outlet connection. The dryer is selected on the basis of actual output at working pressure. The Acvatron engineer checks whether your existing dryer is compatible with the new compressor’s parameters in 15 minutes.

❓ What is the maintenance schedule?

Schedule per ISO 1217: oil change — every 4,000 operating hours (Mattei synthetic Rotoroil F2); air filter replacement — every 2,000 hours or on controller signal; oil separator element replacement — every 8,000 hours. Acvatron carries out the full schedule in Chisinau; consumables are in stock.

Take the next step right now

12. 📞 Call or write — the Acvatron SRL engineer will select the right BLADE 18 version for your air flow and pressure in 15 minutes.
13. 📋 Receive a commercial offer with technical specifications, price and delivery lead time on the day of enquiry.
14. 🛒 Place your order — dispatch from Mattei’s European stock on the agreed date.

Acvatron SRL — an engineering approach to every sale.