Choose tubing for the flow and connection method
Flexible PVC pipe suits specified solvent-jointed circuits, while lighter tubing is used on suitable decorative fountain and air systems. Choose the correct material and bore for the equipment, not just the most flexible option. The line must carry the required flow without excessive restriction and connect securely at both ends.
Can all flexible tubing be glued into PVC fittings?
No. Use solvent cement only with the materials and sockets specified for it. Corrugated polyethylene and other hoses need their intended connection system.
Measure the route rather than the straight-line distance
Allow for rises, bends, service loops and the positions of the pump and return. Avoid tight curves that flatten or kink the tube. A long, undersized line can substantially reduce the flow delivered by an otherwise suitable pump.
Check how the length is sold
Some products are supplied as fixed coils; others may be sold by length. Read the selected option and its units so you order one continuous run where needed. Match the pipe’s internal or external measurement to the fitting specification rather than comparing only the headline inch size.
Should I reduce the pipe immediately after the pump?
Only where the design and equipment require it. Unnecessary reductions can increase resistance; check the pump recommendation and complete route first.
