Cost-Effectiveness Analysis: A Systems Engineering Perspective

13mm(i/d) 16mm(o/d) CONNECTORS/Fittings for A Garden Automatic Irrigation System, Tee,Elbow,Bung,Straight,Valves.by Cost Wise®,The Irrigation Specialists (Bung X 10)

Cost Wise Men's Gray Mdpe Water Supply Pipe Compression Flow Valves-/Fe Bsp Thread Removable Handle For Safety-Ideal For Irrigation Systems (20Mm Compression- 1/2" Bsp )

Cost Wise Black Micro Irrigation Pipe Connector Adaptor To Link A Garden Hose With Universal Cick Fitting To A Watering System (1)

Cost Wise Women's Black Polypropylene Bsp Threaded Socket Elbows,- Or Male-,Ideal For Garden Irrigation Systems (1" -)