Horizontal Autoclave Rectangular

Unlike cylindrical models, the rectangular chamber offers a spacious, flat loading area that maximizes usable volume. This allows easy placement of trays, wire baskets, and transport carts, making it ideal for sterilizing large quantities of flat or bulky items in a single cycle. The design improves throughput in high-volume settings such as hospital CSSDs or pharmaceutical media preparation.

Key features include a rectangular chamber for maximum space utilization, front-loading horizontal orientation for easy access, triple-wall construction (inner chamber + steam jacket + outer shell) with glass-wool or mineral-wool insulation, heavy-gauge stainless steel (SS-304/SS-316) construction with argon-arc welding, energy-efficient heaters, optional automatic microprocessor/HMI controls, radial locking or sliding door with pressure interlock, separate steam boiler with safety devices, multiport valve, moisture trap, and a sturdy corrosion-resistant stand.

It uses pressurized saturated steam at temperatures typically ranging from 121°C to 134°C. The rectangular chamber, usually made of high-grade stainless steel (often 316L), ensures corrosion resistance and durability. Advanced models include automatic pressure control, vacuum cycles for better steam penetration, drying functions, and programmable cycles. Multiple safety mechanisms such as door interlocks, pressure relief valves, and over-temperature protection are standard.

Chamber sizes generally range with dimensions supporting volumes from about 79 to 500 liters (depths typically 600–1300 mm). Operating temperature is adjustable between 121°C and 134°C, with standard pressure around 0.22 MPa. Power options commonly include 9 kW/380 V, 50 Hz (adjustable to customer voltage requirements). Exact models and dimensions can vary.

Safety features include a radial locking or sliding door with pressure interlock (prevents opening under pressure), spring-loaded safety valves, vacuum breaker, steam trap, low-water cut-off on the boiler, pressure gauges, and automatic pressure switches. Many units also feature over-temperature protection and comply with standards such as ISO, CE, and ASME.

Benefits include higher capacity per cycle compared to vertical or smaller cylindrical units, improved operational efficiency with faster turnaround and reduced energy use in optimized models, easier maintenance due to front access, consistent performance from uniform steam distribution, and long-term reliability from premium stainless-steel construction when properly maintained.

It is widely used in the pharmaceutical, nutraceutical, herbal, Ayurvedic, biotech, cosmetic, and chemical industries, as well as in hospitals, laboratories, research institutions, and healthcare facilities for sterilizing instruments, glassware, media, and other critical items.

Main components include the rectangular stainless-steel chamber, steam sterilization system (saturated steam under pressure), hinged or sliding front door with safety interlocks, digital/PLC or multiport controls with temperature/pressure/time sensors, safety devices (relief valves, vacuum systems, alarms), and utilities such as a steam generator/boiler, water supply, electricity, and drainage. A moisture trap helps keep loads dry.

The horizontal orientation places the chamber parallel to the floor with a convenient front-loading door. This allows operators to slide in trays, shelves, or carts ergonomically without excessive bending or lifting, reducing physical strain, improving safety for heavy loads, and enabling higher throughput in busy environments such as central sterile supply departments or bulk processing areas.