Autoclave, Horizontal, Cylindrical, Triple Walled, High Pressure

A high pressure, triple walled horizontal autoclave with a steam jacket, from 75 to 339 L. Steam fills the jacket around the chamber first, so the chamber walls stay hot: cycles start faster, less steam condenses on the load, and with the moisture trap on the discharge line the load comes out dry. It runs at up to 30 psi, so it sterilizes at 134 °C for fast cycles as well as at 121 °C at 15 psi. The working pressure is adjustable from 15 to 30 psi, and every unit is hydraulically tested to 2.5 times its working pressure.

Choose in three steps: the size, the build and the controller. Classic has an SS 304 chamber and jacket with an SS 202 outer wall, on a black powder coated mild steel stand. Prime is all SS 304, stand included. The stainless steel lid closes with a radial lock, and the self-locking safety door cannot be opened until the chamber pressure is released. A separate SS boiler (steam generator) under the chamber comes as standard, and a single multiport valve sends steam to the jacket and the chamber and exhausts them. An automatic pressure control switch holds the set pressure by switching the heater, spring loaded safety valves on the boiler and the chamber and a dead weight release valve guard against over-pressure, a vacuum breaker breaks any vacuum formed as the steam condenses, and an automatic low water cut-off protects the heater. Glass wool insulation between the jacket and the outer wall keeps the heat in. It works on a 440 V three phase supply.

Only need 121 °C? See the standard version, HTN-AV161.

For laboratory use only.

Features

• Steam jacket keeps the chamber hot for faster, drier cycles
• LED, Graphic LCD or Recording controller runs the full cycle
• High pressure: 134 °C at 30 psi, or 121 °C at 15 psi

Build materials

How the cycle runs

1. Heat up: steam fills the jacket first, then the chamber, and air is let out.
2. Sterilize: the timer runs at the set temperature.
3. Cool down: a buzzer sounds, the heater stops and the pressure falls.

All three controllers run this cycle by themselves. The timer starts only at the set temperature, so every load gets its full time. The cycle stops if the water runs low or the temperature goes too high, and the pressure control switch cuts the heater if the pressure rises too high.

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Why upgrade?

• Graphic LCD: see the whole cycle at a glance. The F0 value adds up the sterilizing effect of every minute above 100 °C, heat up and cool down included, so you can see how much each load received.
• Recording: every batch is recorded and reported on a PC with software built for 21 CFR compliance, which supports audits and validation. Four sensors check the load itself, not just the chamber.

What is the F0 value?

• What: the sterilizing effect of a cycle, counted in minutes at 121 °C.
• How: the controller reads the chamber temperature all through the cycle. A minute at 121 °C counts as 1, at 111 °C as 0.1, at 131 °C as 10. It adds them up, heat up and cool down included.
• Why: the same timer setting can give a big or slow-heating load less sterilizing than a small one. F0 shows what each load actually got.
• Reading it: F0 15 means the same effect as 15 minutes at 121 °C. If a load ends below the F0 your method needs, run it again or check the load.

Please note: F0 shows how much sterilizing a load received, not whether it is sterile. Only biological indicators placed in the load can confirm that.

Sizes

Add -G for the Graphic LCD or -R for the Recording controller, for example HTN-AV389-G.