Welcome to another edition of #techtuesday, this week we dive into another appliance of Western Maryland No. 1309, the Westinghouse Cross-Compound air... | By Western Maryland Scenic Railroad | Facebook
![Air Compressor Valve-G1/2 Air Compressor Safety Release Pressure Valve Brass for Boiler Steam Generator(7KG under pressure) : Amazon.co.uk: Business, Industry & Science Air Compressor Valve-G1/2 Air Compressor Safety Release Pressure Valve Brass for Boiler Steam Generator(7KG under pressure) : Amazon.co.uk: Business, Industry & Science](https://m.media-amazon.com/images/I/51+wFvyO-lL._SL1001_.jpg)
Air Compressor Valve-G1/2 Air Compressor Safety Release Pressure Valve Brass for Boiler Steam Generator(7KG under pressure) : Amazon.co.uk: Business, Industry & Science
![The front end of the steam locomotive 'Princess Elizabeth' showing the pump for the air braking system Stock Photo - Alamy The front end of the steam locomotive 'Princess Elizabeth' showing the pump for the air braking system Stock Photo - Alamy](https://c8.alamy.com/comp/CT0EGH/the-front-end-of-the-steam-locomotive-princess-elizabeth-showing-the-CT0EGH.jpg)
The front end of the steam locomotive 'Princess Elizabeth' showing the pump for the air braking system Stock Photo - Alamy
![purpose of cylinders on front of steam loco? - Model Railroader Magazine - Model Railroading, Model Trains, Reviews, Track Plans, and Forums purpose of cylinders on front of steam loco? - Model Railroader Magazine - Model Railroading, Model Trains, Reviews, Track Plans, and Forums](https://i.imgur.com/CZ9CozQ.png)