Engineered for maximum reliability and strict 100% oil-free operational safety guidelines.
In modern industrial processes, low-pressure air supply represents a significant share of electric utility expenditure. Historically, tri-lobe Roots blowers served as the default technology for wastewater treatment aeration, pneumatic material conveying, and industrial flue gas desulfurization. However, standard lobe blowers operate via external compression, which incurs severe throttling losses and limits their thermodynamic efficiency.
Oil-free screw blowers represent a revolutionary departure. By utilizing an internal compression design defined by asymmetric rotor profiles, they compress air within the rotor chambers prior to discharge. This design delivers dramatic energy reductions—regularly achieving 20% to 35% savings compared to conventional Roots systems.
ISO 8573-1 Class 0 Certification: For manufacturing processes in food processing, pharmaceutical production, and semiconductor fabrication, even parts-per-billion oil contamination can ruin batches or disrupt micro-processes. True dry-type oil-free screw compression ensures absolute system integrity.
To maximize operational efficiency, our systems feature permanent magnet (PM) synchronous motors driven by variable frequency drives (VSD). Unlike induction motors that suffer efficiency drops at partial loads, PM motors maintain a high efficiency curve across their entire speed range.
The variable speed mechanism continuously matches blower output with system demands, which is ideal for wastewater biological processes where oxygen requirement fluctuations are continuous. Additionally, the lack of gearing or mechanical transmission steps minimizes friction loss and extends component life cycles.
From European water utilities seeking to meet net-zero carbon goals to cement plants in Southeast Asia upgrading their bulk handling pipelines, procurement criteria for low-pressure air systems have shifted toward Lifetime Cost of Ownership (LCOE). Key indicators that modern engineering firms demand include:
Each unit features advanced materials and smart control technologies to ensure long-term durability.
Designed with high-precision clearances to eliminate internal leakage, maximizing volumetric delivery while avoiding rotor contact.
High-efficiency IE4/IE5 PM motors offer superior power density, operating coolly and efficiently even under challenging environmental conditions.
Monitors pressure, temperature, and vibration in real-time. Features Modbus and Ethernet ports for seamless integration with SCADA networks.
Adapting to global changes through energy-efficient innovations.
In municipal and industrial wastewater facilities, the aeration basin represents the largest consumer of energy, often accounting for over 60% of total plant energy consumption. By implementing oil-free screw blowers equipped with variable frequency drives, plant operators can adjust air flow to match the dynamic biological oxygen demand (BOD) of the influent. This eliminates waste from over-aeration during low-flow periods, resulting in direct operational savings.
Industries processing granular or powdered bulk solids—such as fly ash, cement, chemical powders, and grain—require safe, reliable, and contaminant-free air delivery. Conventional oil-lubricated systems run the risk of oil mist leaking into the air stream, which can cause powder clumping or product contamination. Our oil-free dry screw blowers deliver clean, continuous air flow that keeps product lines running smoothly without the risk of oil leaks.
As industry operations shift toward digitalization, the technology roadmap for our oil-free screw blowers focuses on three main developments:
Shanghai Honest Compressor Co., Ltd. is a British-owned enterprise founded in early 2004. Our primary manufacturing facility is located at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China. Over the past two decades, we have grown into a leading manufacturer of twin-screw air compressors and a premier provider of complete air system solutions.
We supply a comprehensive range of compression systems, including low, medium, and high-pressure piston compressors, oil-free air compressors, and complete screw compressor packages from 3kW to 480kW. We also supply gas separation equipment, refrigerant compressors, refrigerated air dryers, inline filters, ceramic membrane filtration systems, and replacement consumables.
Our commitment to engineering quality, combined with our global reach, has made us a trusted OEM partner for some of the world's leading compressor brands. We deliver systems certified to international CE and ISO standards, ensuring long-term reliability and compliance with regional safety codes.
According to MRFR analysis, the dry vacuum pump market size is valued at US$ 5.97 billion in 2024. The dry vacuum pump market is expected to grow from US$ 6.17 billion in 2025 to US$ 8.28 billion in 2034, registering steady growth driven by the rising demand for oil-free processes globally.
Connecting with partners globally to drive technological innovation.
We regularly participate in major global industrial exhibitions, presenting our latest achievements in energy-saving air systems and oil-free screw technologies. These events give us the opportunity to meet with procurement agents, engineering firms, and end-users to discuss customized solutions and OEM/ODM opportunities.
Our engineering team provides free site design consultations and energy audit services to help customers optimize their compression systems. Contact our technical support team to design a system optimized for your altitude, ambient temperature range, and specific process requirements.
Essential knowledge for procurement managers and facility engineers.
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