How to build and pipe up a proven 3-valve bypass for a pool heat pump: the correct position in the circuit, setting the flow rate, choosing d50 or d63, and a complete PVC-U parts list from the range.
The inlet nozzles distribute the treated water throughout the pool – and thus determine whether the circulation actually reaches everywhere. Number, mounting height and orientation are part of the hydraulic design, not just cosmetics. Why Inlet Nozzles Determine Water Quality The inlet nozzles – also called return or inflow nozzles – carry the water, which…
A main drain at the lowest point of the pool improves circulation, cleaning and drainability – but it can only be sensibly installed during new construction. This guide explains the benefits, the separate pipework to the pump and the integration alongside the skimmer. What a Main Drain Does The main drain – often also called…
PVC-U pipes are not glued but solvent-welded: the cleaner and solvent cement soften the surfaces and fuse the pipe and fitting into a homogeneous material. With the correct sequence, clean joint faces and observed timings, you create a permanently pressure-tight joint. Solvent Welding, Not Gluing – the Principle The process known as solvent welding of…
Ball valve, butterfly valve or check valve – which valve belongs at which point of the pool circuit determines pressure loss, ease of operation and maintenance effort. This guide assigns the designs to their tasks and shows the valve layout of the entire circuit. Which valves the pool circuit needs A private pool circuit gets…
Frost damage to pool pipework almost always occurs where residual water cannot drain away. By allowing for drainability from the pipe-planning stage and fitting unions in the right places, you save time in winter and avoid burst pipes and components. Frost protection begins with pipe planning, not in autumn The widely used autumn checklist often…
How much head your filter pump really needs is not determined by the pool depth, but by the sum of all flow losses in the circuit. Head: the Sum of All Losses A common misconception is that the pump has to overcome the pool depth or the height of the water level. In a closed…
It is not the nominal size that matters, but the flow velocity in the pipe. By sizing the suction and pressure side separately, you choose confidently between d50 and d63 – and avoid cavitation, flow noise and unnecessary pressure loss. Flow Velocity as the True Sizing Parameter The question “d50 or d63?” cannot be answered…
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