Device for amortiguating ariete blows of a circulating medium in a pipeline, especially, of circulating water in water pipes networks. (Machine-translation by Google Translate, not legally binding)
GB1323410A
Device for air venting and volume compensation in a closed hot water heating plant
DE2136273A1
DEVICE FOR COMPENSATING PRESSURE FLUCTUATIONS AND MAINTAINING THE PRESSURE IN HYDRAULIC SYSTEMS
DE2136311A1
DEVICE FOR VENTILATION AND VOLUME ADJUSTMENT IN CLOSED HOT WATER HEATING SYSTEMS
DE2136272A1
INDEPENDENT VENTILATION VALVE FOR RADIATORS IN PARTICULAR CLOSED HEATING SYSTEMS AND LIQUID PIPE SYSTEMS
GB1170878A
Valve device for preventing a backflow between a removal line and a supply line feeding this.
GB1200515A
Expansion chamber device for warm-water heating systems
