These cookies are absolutely essential for our website to function properly.
We use Google Analytics to measure how you use the website so we can improve it based on user needs.
These cookies may be set by third party websites and do things like measure how you view YouTube videos.
Amgueddfa Cymru – Museum Wales
Set of four coloured valve model cards with instruction leaflet in green case with cream label. Four valve model cards for marine engineers comprising:- (1) Piston valve (steam inside) (2) Piston valve (steam outside) (3) Commomn slide valve (4) Double-ported valve (5) Instruction leaflet (6) Case (green)
