EP-CM130GPV Water-Lubricated Oil-Free VSD Screw Air Compressor for PET Bottle Blowing

EP-CM130GPV Water-Lubricated Oil-Free VSD Screw Air Compressor for PET Bottle Blowing

The EP-CM130GPV is a 130 kW asymmetric dual-motor permanent magnet VSD water-lubricated oil-free compressor delivering 5.4–13.5 m³/min at up to 3.0 MPa (30 bar) — purpose-built for large PET bottle blowing operations where wide-range variable output, asymmetric motor staging, and Class 0 oil-free air quality combine to deliver both production flexibility and significant energy savings.

SKU: EP-CM130GPV Category: Tags: , , , ,


EP-CM130GPV | 130 kW Asymmetric VSD Water-Lubricated Compressor — 5.4–13.5 m³/min at 30 Bar

Not all PET bottle blowing operations fit neatly into a single demand profile. A large facility producing multiple bottle formats across rotating production schedules — standard water bottles at 22 bar in the morning, CSD bottles at 28 bar in the afternoon, 5-litre format changeovers between — places a compressed air demand on the supply system that varies not just in volume but in pressure throughout the working day. Fixed-speed compressors respond to this variability with wasted electricity; simple dual-motor symmetric VSD designs offer limited staging precision.

The EP-CM130GPV addresses this challenge with an asymmetric dual-motor architecture: a 55 kW motor and a 75 kW motor, each independently VSD-controlled, providing three distinct operating combinations rather than the two of symmetric dual-motor designs. The 55 kW motor alone handles low-demand periods; the 75 kW motor alone covers medium demand; both together deliver the full 13.5 m³/min (477 cfm) output at pressures up to 3.0 MPa (30 bar). The PLC control system selects the optimal combination and speed setting automatically based on real-time pressure feedback, minimising electricity consumption across every phase of the production schedule.

The water lubrication system — which maintains compression chamber temperature at only ambient +15°C, seals compression clearances without oil, and produces ISO 8573-1 Class 0 certified oil-free air at the source — operates identically across all three motor combinations, guaranteeing consistent air purity regardless of which combination is active. For large PET packaging operations evaluating high-capacity oil-free compressor solutions, our engineering team is available to perform detailed demand analysis and system sizing.

EP-CM130GPV 130kW asymmetric VSD water-lubricated oil-free compressor 13.5 m3/min 30 bar PET blowing

Technical Specifications

Parameter Specification
Model EP-CM130GPV
Drive Type Asymmetric dual permanent magnet VSD
Motor Configuration 55 kW (75 HP) + 75 kW (100 HP) = 130 kW total
Working Pressure 2.0 – 3.0 MPa (290 – 435 psi / up to 30 bar)
Free Air Delivery (FAD) 5.4 – 13.5 m³/min  |  191 – 477 cfm (variable)
Noise Level 75 dB(A)
Weight 3000 kg
Dimensions (L×W×H) 2500 × 2000 × 1550 mm
Motor Efficiency Up to 97% (permanent magnet)
Lubrication Medium Pure water — zero oil
Compression Chamber Temp. Ambient + 15°C
Air Quality ISO 8573-1 Class 0 / TUV certified
Control Interface 10-inch touch screen + IoT + 485 communication
Design Service Life >25 years / 7×24 h continuous

Asymmetric Motor Architecture: Three Operating Stages

The EP-CM130GPV's defining technical feature is the deliberate asymmetry of its two permanent magnet motors. Unlike the symmetric 55+55 kW or 75+75 kW configurations of other dual-motor models, the 55+75 kW pairing creates three genuinely distinct operating power levels:

Operating Stage Active Motor(s) Approx. FAD Typical Use Case
Low demand 55 kW (VSD) 5.4–7.5 m³/min Maintenance windows, partial-line production
Medium demand 75 kW (VSD) 7.5–10.0 m³/min Single large line at moderate speed
Peak demand 55 kW + 75 kW (both VSD) 10.0–13.5 m³/min Full-speed production at maximum cavity count

EP-CM130GPV water lubrication internal circulation asymmetric dual motor VSD 30 bar

Key Features

2.5:1 Turndown Ratio

The 5.4–13.5 m³/min FAD range represents a 2.5:1 turndown ratio — the widest available in the CMG series at this power class. This means the EP-CM130GPV can operate stably at 40% of its maximum output without pressure instability, making it suitable for facilities with highly variable demand profiles throughout the production day.

Isothermal Compression at 30 Bar

Water injection maintains the compression chamber at ambient +15°C throughout the operating cycle. At 30 bar, this isothermal effect provides greater energy savings than at lower pressures — the thermodynamic benefit of isothermal versus adiabatic compression increases with pressure ratio, making water lubrication technology particularly advantageous at higher working pressures.

IoT & Remote Monitoring Standard

The EP-CM130GPV includes an IoT wireless monitoring system as standard, enabling remote start/stop, real-time parameter visibility for both motors, alarm notification, and data logging for production reporting. The 485 communication interface allows direct integration with facility SCADA and DCS platforms.

No Wearing Parts Design

The entire machine is designed around the principle of no conventional wearing parts. The water lubrication keeps operating temperatures at levels where thermal wear is negligible; aviation-grade star wheel materials eliminate the wear challenge at the screw interface; and the patented no-shaft-sealing design removes a common failure point entirely.

Application Scenarios: Where 13.5 m³/min at 30 Bar Fits

Application Pressure Needed Typical FAD EP-CM130GPV Fit
High-speed rotary — mineral water 22–28 bar 8–12 m³/min ✅ Optimal
High-speed rotary — CSD bottles 25–30 bar 10–13 m³/min ✅ Full capacity
Multi-line linear — edible oil 22–28 bar 6–10 m³/min ✅ Medium-demand stage
Replacing piston compressor bank 20–30 bar Variable ✅ Single-unit consolidation

Large-scale PET bottle production line 13.5 m3/min water-lubricated oil-free air supply

Manufacturing & Factory Quality

Ever Power manufacturing facility 130kW water-lubricated compressor production quality

The EP-CM130GPV is manufactured in Ever Power's 68,000 m² facility, which has been producing oil-free compressor technology continuously since 1960. Pre-shipment testing for the EP-CM130GPV includes full-load performance verification at all three motor combinations, VSD response testing across the full 5.4–13.5 m³/min FAD range, acoustic measurement at rated load, IoT communication system verification, and comprehensive leak inspection. ISO 8573-1 Class 0 TUV certification documentation is provided with every unit.

Customer Case Studies

Brazil — Multi-Format Mineral Water Producer

Industry: Bottled Water  |  Application: 28 bar VSD air for high-speed rotary line producing 4 bottle formats with rotating schedule

"Our production schedule rotates between 250ml, 500ml, 1L, and 1.5L formats across the week. Each format requires a different blowing speed and different air consumption. The EP-CM130GPV's asymmetric motor stages match our demand profile better than any symmetric dual-motor design could. We've measured 29% electricity saving versus our previous fixed-speed installation. The 3.0 MPa pressure ceiling also gives us flexibility if we expand into CSD bottle production in future."

★★★★★

UAE — Large Beverage Conglomerate

Industry: Beverages  |  Application: 30 bar oil-free air for two rotary blowing lines running on alternating schedules in 42°C ambient

"In our climate, compressor discharge temperature is a persistent problem with conventional equipment. The water-lubricated technology of the EP-CM130GPV keeps the compression chamber at ambient +15°C — roughly 57°C in our conditions — compared to 200°C+ in our previous dry oil-free unit. Efficiency has remained stable year-round. The IoT system also allows our operations center to monitor both motor states remotely throughout the night shift."

★★★★★

Poland — Contract PET Blowing Facility

Industry: Contract Packaging  |  Application: 20–30 bar variable pressure for multi-client blowing contracts across 6 product categories

"As a contract blower we handle everything from 250ml pharmaceutical bottles at 22 bar to 2L carbonated water bottles at 29 bar. The EP-CM130GPV's adjustable 2.0–3.0 MPa pressure range covers every client specification we have. The 13.5 m³/min peak capacity also means we can run two production lines simultaneously for our highest-volume contracts. Class 0 TUV certification satisfies every client's quality audit without exception."

★★★★★

Frequently Asked Questions

Why asymmetric motors (55 kW + 75 kW) rather than matched motors?
The 55+75 kW pairing creates three distinct output stages: the 55 kW alone for low demand, the 75 kW alone for medium demand, and both combined for peak demand up to 13.5 m³/min. This three-stage flexibility allows more precise output matching to the actual demand curve of multi-format PET blowing operations, with less energy waste at each stage than symmetric designs that jump between two output levels.
What is the maximum working pressure of the EP-CM130GPV?
The EP-CM130GPV has a maximum working pressure of 3.0 MPa (30 bar), adjustable from 2.0 MPa. This range covers the majority of PET bottle blowing applications for standard water bottles and CSD containers. For applications requiring pressures up to 4.0 MPa (40 bar), the EP-CM150GPV or EP-CM110G would be the correct selection.
What does the 5.4–13.5 m³/min FAD range mean operationally?
A 2.5:1 turndown ratio means the compressor can supply 40% of maximum output as its stable minimum. This wide range accommodates facilities operating a single large rotary line at varying speeds, or multiple lines with different simultaneous demands, without the pressure fluctuations that occur when a compressor operates below its stable minimum — protecting blow mold integrity and bottle quality throughout variable-demand cycles.
Is the EP-CM130GPV suitable for hot climate installations?
Yes. Water lubrication inherently maintains the compression chamber at ambient +15°C regardless of external temperature — where dry oil-free designs operating at 150–200°C internally experience efficiency loss and accelerated wear at high ambient temperatures, the EP-CM130GPV maintains stable performance. Customer installations in the UAE, Saudi Arabia, Southeast Asia, and sub-Saharan Africa confirm reliable year-round operation in 35–45°C ambient conditions.
Can the EP-CM130GPV replace multiple smaller compressors?
Yes, this is a common consolidation scenario. Facilities running 3–5 smaller piston or screw compressors in parallel frequently replace the entire bank with a single EP-CM130GPV, gaining simpler infrastructure, a single control system, and significantly lower maintenance complexity and cost. The 5.4–13.5 m³/min range typically covers the combined output of 3–5 smaller units while eliminating the individual maintenance burden of each.

Three Motor Stages. One Machine. Zero Oil.

Multi-format beverage producers, large-scale water bottlers, and contract blow molders in Brazil, the UAE, Poland, and 50+ markets choose Ever Power asymmetric VSD technology for maximum demand flexibility without wasted electricity. Share your production schedule and blowing machine mix — our engineers will model your energy saving across all operating stages and confirm system fit.

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