Healthcare Autoclaves - Hospital Grade Performance for Ambulatory Surgery Centers, Large Clinics & Veterinary Hospitals. The 3870HSG-WS autoclave is an 85 liter autoclave that is ideal for ASCs and large clinics. Pre & Post vacuum performance is achieved with a built-in vacuum pump used for fractionated pre vacuum air removal eliminating air pockets from all load types and maximizing efficient steam penetration throughout the entire load. After the sterilization stage the vacuum pump is used for post-vacuum drying, resulting in bone-dry load at the end of the cycle. Automatic locking door; Powerful built-in steam generator; BSL Chamber & trays.