PR-94 STEAM ENGINE MODEL WITH BOILER

The operation of a commercial steam engine is well illustrated with this working model.

The extra large size unit is provided with a horizontal boiler with a whistle, a safety valve and a steam gauge.

The brass boiler is fitted on to a steel housing with a chimney.

There is an inspection window to show the water level.

It comes on a metal base.

It is available in two varieties:

1. Steam engine that operates on 220V AC. 50 Hz.
2. Steam engine where the water can be heated using dry fuel.

This is a wonderful working model that shows how the exhaust steam simply vents out into the air. This fact helps students to understand two things about steam locomotives:

• It explains why they have to take on water at the station, since the water is constantly being lost through the steam exhaust.
• It explains where the "choo-choo" sound comes from. When the valve opens the cylinder to release its steam exhaust, the steam escapes under a great deal of pressure and makes a "choo!" sound as it exits.