The wonderful world of pressure relief valves
In any system where steam is generated there is always a possibility that over pressurization can cause a catastrophic failure of the pressure vessel. This could result in destruction of property, injury, and loss of life. This is a bad day no matter how you cut it and is the reason that every pressure […]
The Vacuum Breaker
Part: Vacuum Breaker Description: Steam Operated, one way valve Discussion: A vacuum breaker is a small steam operated valve on the top of the steam boiler that is open to the atmosphere until enough steam pressure is present to close it. Very old espresso machines did not have a vacuum breaker and two bad things […]
Pressurestat
Our Friend the pressurestat. Purpose: Pressure operated relay. In order to be useful and safe, the steam boiler needs a mechanism to regulate the steam pressure. The most common way of setting the steam boiler pressure is with a pressurestat. A pressurestat is a mechanical devise that turns a switch, or set of switches, on […]