thoughts. Developers are now looking at solar energy as a compliment to gas or oil powered boilers. Solar not only benefits the environment by reducing the amount of natural resources we consume, but also makes the heating of a building far more efficient and helps to lower utility bills. be compatible with solar heating systems. The tank is insulated using ridged, polyurethane foam insulation. It meets or exceeds the most demanding energy efficiency standards. The second coil assists the system only when the solar energy cannot maintain the desired temperature during periods of peak demand. stainless steel; as much as 90% of post service life steel is converted into prime stainless products. the corrosion resistant properties of Duplex are greater than those af forded by other grades of stainless steel used in today's water tanks. Delta Stainless Steel Solar cylinder bodies a lifetime warranty. So whichever way you look at it Duplex 2304 makes the Delta Solar far superior. · Pressure tested to 15 bar · Relief valve safety control · 3 bar working pressure · Stainless Push fit connections · Flow rate up to 55 ltrs/ min · Indirect and Direct versions · Stylish appearance · Lifetime guarantee Delta 200ltr. Solar Stainless Steel Cylinder Delta 250ltr. Solar Stainless Steel Cylinder Delta 300ltr. Solar Stainless Steel Cylinder Delta 300ltr. Triple Coil 3kw Solar Stainless Steel Cylinder Copper 300ltr. Dual Coil Solar Cylinder c/w Insulation Delta 400ltr. Solar Dual Coil Stainless Steel Cylinder Delta 500ltr. Solar Dual Coil 3kw Stainless Steel Cylinder Delta 300ltr. Triple Coil Copper Cylinder Delta 300ltr. Triple 28mm Coil Delta 300ltr. Open Vented dual solar Stainless Steel Cylinder 300ltr. Stainless Steel Solar Vented Cylinder 300ltr. Stainless Steel Solar Vented Triple Coil 500ltr. Stainless Steel Solar Vented Triple Coil |