... Anode magnesium bar, T/P valve, Relief valve, dustproof ring Working Pressure ≥ 6 bar Hail Resistance Φ25mm diameter Features ... of heat pipe solar collector, storage water tank, workstation system, related accessories and interconnecting pieces, etc.Heat Pipe ... , expansion vessel, check valve, etc. 2) More intelligent system operation, when temperature discrepancy between collector medium and water in ...