Water shock arrestors are neither expansion vessels nor buffer vessels but are designed to specifically to absorb water...
Reflex NG, diaphragm expansion vessels for sealed heating and cooling systems
Includes:-Bracket which holds upto25 Ltr VesselsJubilee ClipRawl PlugsScrews
Evolve EV-K Vessel Kit Hose includes Filling Loop, Pressure Reducing Valve and Gauge