ChemStar Dry was developed for laboratory operations which require high pumping speed and deep vacuum, such as vacuum manifolds (Schlenk line), freeze dryer, vacuum oven and glove boxes. WOB-L piston vacuum pumps are reliable dry vacuum / pressure pumps for physical and aqueous vapor applications, where corrosion resistance is not required (not recommended for pumping acidic, basic, or organic fumes).
Oil diffusion pumps from Welch are used to generate a high and ultra-high vacuum up to a pressure range of 5x10-7 mbar with an extremely high pumping speed. Besides single pumps, Welch also offers complete oil diffusion pump systems. Compact and portable aspiration/filtration systems with an integrated superior chemical resistant diaphragm pump are used for the safe and precise aspiration of non-flammable chemical, biological and medical liquids.
Oil diffusion pumps from Welch are used to generate a high and ultra-high vacuum up to a pressure range of 5x10-7 mbar with an extremely high pumping speed. Besides single pumps, Welch also offers complete oil diffusion pump systems. Compact and portable aspiration/filtration systems with an integrated superior chemical resistant diaphragm pump are used for the safe and precise aspiration of non-flammable chemical, biological and medical liquids.
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For over 100 years, Welch provides high quality, durable vacuum products for a wide range of industries and applications. We add value to our customers' businesses through unique end-use solutions and innovative OEM products. The following pages will give you tips that bring our experience to bear on your solutions, with information on the considerations related to your needs and budget.
Welch HVAC Vacuum Pumps are used to remove gas, vapors, and other contaminants from refrigeration systems after refrigerant recovery and repair of cooling systems. Deep and complete vacuum is required to ensure the Air Conditioning system is free from contaminants before recharging with refrigerant.
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