0510-86607775
VDP-650 Oil-Free Variable-Pitch Screw Vacuum Pump – VDP-Type, OI-Free Dry Screw Vacuum Pump
Maximum pressure: ≤5 Pa
Power: 18.5 kW
Export size: 65mm
Noise: ≤80dB
Contact hotline
0510-86606771
Market reference price:
Price negotiable
Yuan
- Product Description
-
- Commodity name: VDP-650 Oil-Free Variable-Pitch Screw Vacuum Pump – VDP-Type, OI-Free Dry Screw Vacuum Pump
- 副标题: Rated flow: 650 m³/h | Maximum pressure: ≤5 Pa
Rated flow rate: 650 m³/h <br/> Maximum pressure: ≤5 Pa <br/> Power: 18.5 kW <br/> Export size: 65mm <br/> Noise: ≤80dB <br/>
VDP-650 Oil-Free Variable-Pitch Screw Vacuum Pump – VDP-Type, OI-Free Dry Screw Vacuum Pump
Product features:
• Compared to equal-pitch screw pumps, it offers higher pumping efficiency and lower energy consumption.
• Wide pumping speed range, capable of direct venting to the atmosphere; a single pump can achieve the effect of multi-stage series operation. A single-stage design can attain a vacuum level as low as 5 PA.
• Nitrogen purging can be used, making cleaning and maintenance straightforward, and repairs easy to perform.
• The screw is made of solid ductile cast iron, offering high strength and stable performance.
• The screws operate without touching or frictioning each other, eliminating the need for lubricating oil, preventing oil contamination from flowing backward, and ensuring zero emissions of exhaust gases or waste liquids—resulting in a clean, eco-friendly process with low energy consumption.
• The pump chamber and its components can be surface-treated for corrosion resistance as needed, making them suitable for the specific requirements of the chemical and pharmaceutical industries.
• The screw has undergone precise dynamic balancing, ensuring smooth operation, low noise, minimal vibration, and an extended service life.Technical specifications Unit VDP650 Pumping speed L/S 650 Extreme Pressure Pa 5 Motor power kw 18.5 Motor speed RPM 2900 Export flange mm 65 Cooling water flow rate L/min 8 Noise dB ≤80 Dimensions mm 1609 x 780 x 800 Weight Kg 650 Description UNIT VDP35 VDP70 VDP110 VDP150 VDP180 VDP280 VDP390 VDP550 VDP650 VDP720 VDP800 VDP1100 VDP1500 VDP2000 VDP2800 Displacement
Pumping speedm 3/Hr
L/S35
1070
19110
42150
40180
78280
78390
110550
150650
180m 3/Hr
200800
2201100
3001500
4002000
5502800
770Ultimate assumption
Extreme PressureUNIT
Pa0.04
50.04
50.04
50.04
50.04
50.04
50.04
50.04
50.04
50.04
50.04
50.04
50.04
50.04
50.04
5Motor power
Motor powerKW 1.5 3 1 5.5 5.5 7.5 11 15 18.5 18.5 22 30 45 55 75 Rotational speed
Motor speedRPM 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900 Suction flange
Imported Flangemm DN40 DN40 DN40 DN40 DN40 DN80 DN80 DN100 DN100 DN100 DN100 DN125 DN125 DN150 DN150 Discharge flange
Export flangemm DN25 DN30 DN30 DN30 DN30 DN40 DN40 DN50 DN65 DN65 DN65 DN80 DN80 DN100 DN100 Maximum Cooling Water
Press. Cooling water pressurebargainer 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 2 to 4 Cooling water flow
Cooling water flow rateL/min 4 4 6 6 6 6 6 8 8 8 8 8 16 16 16 Cooling water female
Cooling water temperature°C 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 5 to 35 Noise level: Classroom Sounds dB ≤70 ≤70 ≤70 ≤70 ≤70 ≤75 ≤75 ≤75 ≤80 ≤80 ≤80 ≤80 ≤85 ≤85 ≤85 Dimension **Dimensions** mm 700 x 450 x 550 745 x 450 x 550 953 x 520 x 600 953 x 520 x 600 973 x 600 x 680 1123 × 640 × 680 1357 × 640 × 480 1516 × 780 × 800 1609 x 780 x 800 1690 x 780 x 800 1690 x 780 x 800 1760 x 840 x 930 2250 x 880 x 1100 2250 x 880 x 1100 2250 x 1400 x 1370 Weight kg 200 220 250 250 290 320 450 580 650 1050 1050 1200 1800 2100 2500 • The Elm screw rotor profile features multi-stage compression with variable pitch, delivering 16.6%–23.8% higher efficiency compared to constant-pitch designs. It achieves vacuum levels as low as 0.1 Pa and can operate continuously over extended periods, ranging from atmospheric pressure down to ultimate vacuum conditions.
• Corrosion-resistant gas coatings: We offer customized solutions by applying various anti-corrosion coatings—such as molybdenum, nickel, nano-materials with nickel, Hastelloy, Monel alloy, and titanium alloys—to internal components, tailored to the customer’s specific working media. These coatings exhibit excellent adhesion to the screw material, ensuring they remain firmly in place even under harsh conditions. They are ideal for pumping out condensable gases, toxic, and hazardous vapors, perfectly meeting the specialized demands of the chemical and pharmaceutical industries.
• Patented Sealing System: Featuring a unique multi-layer sealing design that prevents leakage and contamination, ensuring extended service life. The end caps incorporate a distinctive N2-pressurized protection mechanism to further enhance sealing performance. Additionally, the rotors operate without any contact friction, paired with a highly efficient silencer and vibration-insulated drive components—enabling the Elm vacuum pump to deliver exceptionally quiet operation, making it ideal for sensitive environments such as microelectronics and semiconductor facilities.
• The pump chamber features a material buffer zone, and instead of the conventional side exhaust method, it employs a unique bottom-exhaust design. This innovative approach leverages gravity to efficiently and smoothly remove various materials and impurities, effectively addressing the common issue of material buildup that often causes vacuum pumps to get stuck during operation.
• Compared to traditional vacuum pumps, Elma’s dry pumps offer significant energy-saving advantages: under the same operating conditions, the entire unit achieves energy savings of up to 30%; system optimization further boosts efficiency by 5%; and with direct-drive technology, overall efficiency improves by an additional 3%, aligning perfectly with eco-friendly and energy-efficient principles.
Why did they all choose Elm?
Thank you to the following companies for their trust in Elmhurst over the years!
Characteristics of vacuum pump oil
German Precision, Craftsmanship That Inspires Innovation
Processing
Assembly
Quality inspection
Shipment
Precision Machining
The forged billet is turned by a CNC lathe to remove most of the allowance, making the shape of the rotor closer to the design size, while leaving an appropriate machining allowance for the subsequent fine processing. The precision machining of the screw profile is carried out using a MAZAK precision machining center. Through precise programming and processing, the profile accuracy of the screw rotor is controlled within the design requirements.
Assembly
After the installation engineer checked the vacuum pump materials, they assembled the vacuum pump products in accordance with the drawing requirements and conducted pressure tests and usage debugging on the assembled vacuum pump products.
Quality inspection
After each processing step of the product is completed, the quality inspection team conducts quality checks based on the processing technology and product standards. Products that do not meet the standards need to be reworked or scrapped.
Shipment
After all processing procedures are successfully completed, the staff responsible for packaging and shipping will check each product against the shipping documents one by one. Once the information is accurate, they will contact the logistics to arrange for shipping.
Experience accumulation
Focused on vacuum systems for 16 years, with deep industry experience and highly specialized manufacturing expertise.
Half the price, twice the quality
You can have the best of both worlds—fish and bear's paw—but so can price and quality. World-class performance is now available at just half the price.
Finely polished
Precision ensures durability—carefully refining every detail to give your vacuum equipment an artistic touch.
Recognized by numerous renowned companies
Years of quality have built our reputation, earning the trust of renowned companies like Huawei and Gree.
Noise reduction processing
Durable and easy to use—German craftsmanship with noise-reduction technology, plus eco-friendly, energy-efficient design for added peace of mind.
Nanny-style integrated services
From production and sales to maintenance and aftercare, we offer an integrated service process that makes it easier than ever to meet our customers' needs.
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