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ChemStar® Dry
ChemStar® Dry
Welch's ChemStar® Dry is a revolutionary oil-free vacuum system designed for deep vacuum chemical applications. It integrates a proprietary vacuum blower with patented PTFE diaphragm technology, offering a chemical-resistant alternative to traditional oil-seal pumps.
Key Features
- Oil-Free: Eliminates oil back-streaming, maintenance, and disposal, ensuring a cleaner workplace and contaminant-free samples.
- Chemical Resistant: Capable of pumping corrosive vapors and gases, thanks to PTFE and proprietary coatings.
- Plug and Play: Features patented software control with auto speed adjustment from atmospheric pressure to 0.05 torr, and a self-cleaning function to maintain performance.
Applications
The ChemStar® Dry is suitable for various applications including Schlenk Line, Freeze Dryer, Vacuum Oven, Glove Boxes, and Concentrators.
Benefits
- Time-Saving: Increases productivity by eliminating oil-related maintenance and extending maintenance intervals with a self-cleaning function.
- Environmentally Friendly: Avoids oil disposal issues and contamination, eliminating oil misting and odors in the lab.
- Reliability: Durable and repeatable vacuum performance with a robust chemical-resistant pumping mechanism and vapor-load compensation.
- Space-Saving: Compact design allows flexible installation options, including under-counter setups.
Technical Specifications
- Pumping Speed: 150 L/min (9 m3/h) at 60 Hz and 2 torr.
- Ultimate Vacuum Pressure: 5x10-2 torr (7x10-2 mbar).
- Inlet/Outlet Connection: NW 25.
- Dimensions: 18 x 8 x 18 inches; Weight: 50 lbs.
Accessories and Recommendations
Welch recommends using a cold trap with high vapor load applications to extend service intervals. The use of red rubber vacuum hoses is advised over PVC or silicone hoses to prevent chemical degradation.
Contact Information
For more information, contact Gardner Denver Thomas Inc. in the Americas, EMEA, or Asia Pacific regions through the provided contact details.
Catalog excerpts
Revolutionary oil-free vacuum system Deep vacuum Chemical resistant Plug & Play
Open the catalog to page 1
Welch's ChemStar® Dry vacuum system integrates a proprietary vacuum blower with patented PTFE diaphragm technology. The result? The first chemical resistant dry pump alternative to oil-seal pumps -the technology of choice for deep vacuum chemical applications. Increase productivity > No oil-related maintenance work is required > Maintenance intervals are extended by integrated selfcleaning function > Gas ballast automatically handles high vapor loads Eliminate impacts associated with oil > Avoid oil disposal and handling mess > Stop oil contamination of samples Durable pump, repeatable vacuum...
Open the catalog to page 2
Technical Features | Roots blower | Diaphragm vacuum pump How it works: ChemStar Dry pumps quickly down to the working pressures for most evaporative operations (10 to 0.8 torr). It is in this range that ChemStar Dry creates maximum flow for high performance evaporation -clean, fast, and thorough. There is no oil, and the system automatically maintains and protects itself for repeatable robust performance. Pumping speed, 60 Hz at 2 torr
Open the catalog to page 3
by Gardner Denver ORDER INFORMATION Gardner Denver Room 2206, Qiangsheng Mansion No. 145 Pujian Road 200127 Shanghai China Protect ChemStar® Dry with dry ice cold trap. Extend the service interval of your Chemstar Dry by using a cold trap. Welch recommends using a cold trap with high vapor load applications including: Flash Evaporation (vacuum ovens), concentrators, processing of natural plant extracted oils or any other “sticky” substance. Gardner Denver Thomas GmbH Livry-Gargan-Str. 10 82256 Furstenfeldbruck Germany
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