Industrial Rotary Piston Vacuum Pumps
Maximize industrial efficiency with Ever-Power’s high-performance Rotary Piston Vacuum Pumps (HGL, HG, 2H Series). Featuring patented technology, high ultimate vacuum (0.3 Pa), and robust durability for coating, smelting, and drying applications.
The heavy-duty solution for deep vacuum applications. Engineered for reliability, high vacuum performance, and longevity in the toughest industrial environments.
Product Overview
At Ever-Power, we understand that heavy industry requires equipment that doesn't just work—it endures. Our Rotary piston vacuum pump series is designed specifically to handle air and other ordinary gases with exceptional efficiency. Uniquely versatile, when equipped with a gas ballast valve, these pumps effectively manage condensable gases, preventing oil contamination and pump corrosion.
Whether you are in vacuum coating, metallurgy, or heat treatment, reliability is paramount. The Ever-Power HGL and HG series pumps can operate as standalone units for rough vacuum needs or serve as a robust backing pump combined with other high-vacuum pumps, such as diffusion pumps and oil booster pumps. This makes them an integral part of any comprehensive vacuum system.
Note on Safety: If your process involves gases that are rich in oxygen, explosive, corrosive to ferrous metals, or chemically reactive with standard vacuum pump oil, the pump must be fitted with appropriate protective accessories to ensure safe operation.
Advanced Engineering & Features
HG Series: The Pinnacle of Vacuum Technology
The HG and HGL models represent the forefront of our industrial rotary piston vacuum pump technology, boasting patents that enhance performance and reliability.
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High Ultimate Vacuum: Achieves a remarkable ultimate pressure of 0.3 Pa, suitable for deep vacuum requirements. - ✓
Patented Innovation: Features four national patents, including a slide valve guide rail automatic compensation device, a specialized oil circuit throttling device, a shaft seal anti-leakage device, and a compact oil tank design. - ✓
Leak-Free Operation: The improved shaft seal design ensures no oil leakage, maintaining a clean workspace. - ✓
Stable & Quiet: Precision dynamic balancing results in low vibration and low noise operation.
2H Series: Optimized for Maintainability
The 2H series is the result of extensive R&D to optimize the traditional piston pump structure, making it a best rotary piston vacuum pump contender for ease of maintenance.
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Optimized Structure: Transformed from a complex three-cylinder structure to a streamlined two-cylinder design. - ✓
Ease of Maintenance: The pump body features side covers, allowing for easy cleaning of the long and short cylinders without major disassembly. - ✓
Smart Lubrication: The oil circuit system is optimized into an automatic control structure. You no longer need to manually close the oil inlet valve; the system manages long and short cylinder oil paths automatically. - ✓
Extended Lifespan: Bearings have been moved externally to avoid contamination, and the shaft seal area is protected by a shaft sleeve to prevent wear on the main shaft.
Technical Specifications
Use the table below to find the model that fits your specific flow rate and pressure requirements. Whether you are looking for a rotary piston vacuum pump for sale for a small lab or a large foundry, we have the specs you need.
| Model | Ultimate Pressure (Pa) | Pumping Speed (L/s) | Motor Power (kW) | Inlet Diam (mm) | Outlet Diam (mm) | Cooling Water (kg/h) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 2H-30B | 4×10⁻² | 30 | 4 | 63 | 50 | 350 | 380 |
| 2H-70B | 4×10⁻² | 70 | 7.5 | 80 | 76 | 700 | 630 |
| 2H-150 | 4×10⁻² | 150 | 15 | 100 | 80 | 900 | 1100 |
| HGL-70 | 0.3 | 70 | 5.5 | 80 | 63 | 700 | 480 |
| HGL-70F | 0.3 | 70 | 5.5 | 80 | 63 | 700 | 550 |
| HG-150 | 0.3 | 150 | 15 | 100 | 80 | 900 | 850 |
| HGL-150 | 0.3 | 150 | 11 | 100 | 80 | 900 | 800 |
| HGL-150F | 0.3 | 150 | 11 | 100 | 80 | 900 | 880 |
*Note: We also offer auxiliary oil tanks and oil mist absorbers as optional accessories upon request.
Applications and Industry Use Cases
The **oil-sealed rotary piston vacuum pump** is the workhorse of the vacuum industry. Its rugged design makes it perfect for applications requiring high reliability under harsh conditions.
Vacuum Coating
Ensures a contaminant-free environment for thin-film deposition. Our pumps provide the deep vacuum levels necessary for uniform adhesion in automotive and optical coating processes.
Vacuum Smelting & Heat Treatment
In metallurgy, removing gases from molten metal is critical. The high throughput of our High vacuum rotary piston pump series ensures rapid degassing, preventing oxidation and defects in the final metal product.
Vacuum Drying & Impregnation
For the electrical industry, vacuum impregnation of transformer coils requires deep penetration of insulation varnish. The 2H series excels here by maintaining stable pressure levels over long cycles.
Pharmaceutical & Distillation
When used as a Rotary piston vacuum pump for pharmaceutical industry applications, it handles molecular distillation and drying of heat-sensitive materials efficiently, especially when paired with proper cold traps to handle solvents.
Why Choose a Rotary Piston Pump Over Vane Pumps?
While rotary vane pumps are excellent for lighter duties, the Two-stage rotary piston vacuum pump (or robust single-stage versions) offers superior durability when handling gas streams that may contain small amounts of particulate matter. The slide valve mechanism is more robust than sliding vanes, reducing the risk of breakage and wear in demanding industrial cycles.
Maintenance and Troubleshooting
To ensure the longevity of your equipment, following a strict Rotary piston vacuum pump maintenance tips schedule is essential.
Routine Maintenance
- Oil Management: Check oil levels daily. The 2H series features automatic oil control, but the oil quality must be monitored. Change oil immediately if it becomes emulsified (milky) or dark.
- Cooling System: Ensure the cooling water flow rate matches the specifications (e.g., 700 kg/h for the 2H-70B). Scale buildup in the water jacket can lead to overheating.
- Vibration Check: Our pumps are balanced for low vibration. If you notice increased vibration, check the foundation bolts and the drive belt tension immediately.
Troubleshooting Common Issues
Problem: Pump not reaching ultimate vacuum.
Solution: Check for leaks in the connection lines. Verify the oil level and quality. Ensure the gas ballast valve is fully closed if not pumping condensables. If the issue persists, consult our Rotary piston vacuum pump troubleshooting guide or inspect the exhaust valves for wear.
Why Choose Ever-Power as Your Rotary Piston Vacuum Pump Manufacturer?
Ever-Power is not just a distributor; we are a dedicated manufacturer with a focus on innovation. Our HG series patents are a testament to our engineering capabilities. We provide:
- Comprehensive Testing: We use advanced helium leak detection and performance testing rigs.
- Parts Availability: We stock a full range of Rotary piston vacuum pump parts and accessories to minimize your downtime.
- Custom Solutions: We can configure pump systems with boosters, filters, and custom frames to suit your specific facility layout.
Looking for a Rotary piston vacuum pump distributor you can trust? Ever-Power delivers quality, performance, and competitive Rotary piston vacuum pump price points globally.
Frequently Asked Questions (FAQ)
1. What is the difference between the HG and 2H series?
The HG series focuses on high performance with patented technologies, achieving better ultimate vacuum (0.3 Pa) and stability. The 2H series is an optimized version of the traditional piston pump, focusing on ease of maintenance (2-cylinder design) and robust durability for general industrial applications.
2. Can these pumps handle water vapor?
Yes, all our rotary piston pumps are equipped with a gas ballast valve. When opened, it allows the pump to handle a certain amount of condensable vapors (like water vapor) without the vapor condensing into the oil.
3. Do I need to supply cooling water for these pumps?
Yes, the HGL, HG, and 2H series are heavy-duty pumps that generate significant heat during compression. They require a steady supply of cooling water (refer to the spec table for flow rates) to operate efficiently and prevent overheating.
4. Can this pump be used as a backing pump?
Absolutely. These pumps are excellent backing pumps for Roots pumps (boosters), diffusion pumps, and turbomolecular pumps. They provide the necessary rough vacuum to allow the high-vacuum pumps to operate.
5. How often should I change the oil?
For standard applications pumping clean air, oil changes every 500-1000 hours are typical. However, if pumping dirty or wet gases, you may need to change it much more frequently. Regular visual inspection of the oil sight glass is recommended.
Additional information
| edited | by hyw |
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Product Quick Detail:
- Standard and non-standard available
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Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.
Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port
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