5 inch diameter 3 chime valveless crosby whistle on air Lunkenheimer Valves
Sound of an antique Lunkenheimer steam whistle on 100 psi compressed air. 1 1/2" by 3" bell. A bistable safety valve on a model steam traction engine Working brass valves with open criss sections used for study in a Citadel Civil Engineering course. Ffestiniog railway safety valves ...