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Dosing and measuring spare parts for automatic water treatment

Automatic dosing and measuring equipment keeps pH and disinfectant levels steady without daily manual testing. A controller reads the water through one or more probes, and a dosing pump injects acid, chlorine or another product from a tank until the reading returns to the set point. Because the system is in constant contact with both water and concentrated chemicals, it is built from a number of consumable and replaceable items: pump tubes and pump heads, tank lids and fittings, probe cables, electrodes, covers and mounting hardware. Here we list those individual components, so that a worn part can be swapped rather than the whole unit replaced.

Ce acoperă această gamă

The parts gathered here belong to peristaltic dosing pumps, measuring and control units, and the chemical tanks that feed them. Typical items include:

• Pump head components — front covers, head lids and rotor covers for peristaltic pumps such as those fitted to Control Basic Next and Optima units.
• Tank parts — lid kits, handle and lid assemblies and inlet fittings for Clorimax and chemical dosing tanks, including the 60 L Clorimax unit and the DAS filter chemical feeder.
• Probes and electrodes — pH, ORP and chlorine sensors, including ORP electrodes with a gold cathode and an integrated cable.
• Cables and connectors — probe cables, coaxial leads such as RG174A/U, supply cables and short replacement leads for dosing pump electronics.
• Suction and injection accessories — suction intake pipes with level sensor cable and hose, foot filters and anti-emission assemblies.
• Housings and trim — control box covers, plastic covers for My Pool RX units, control panel stickers and wall-mount bracket kits with screws and plugs.

Which parts wear and why

In a peristaltic pump, the flexible tube is squeezed repeatedly by the rotor, so it is the first item to fatigue; signs are reduced or erratic injection, or liquid appearing inside the pump head. Head lids and front covers are removed at every tube change and can crack or lose their seating over time, which is why they are supplied separately.

Measuring electrodes are consumables rather than permanent fittings. A pH or ORP sensor gradually loses responsiveness, becomes slow to settle or drifts away from a hand test, and at that point calibration no longer corrects it. Cables are the other common failure point: they run between a wet probe holder and an electronic board, and a damaged screen or corroded connector produces unstable readings that are easily mistaken for a faulty controller. Tank lids, handles and inlet fittings suffer from chemical attack and from being opened at every refill.

Identifying the correct component

Dosing equipment changes detail between production years, so the reference number is the safest starting point. Several items here are explicitly tied to a model year or series — for example a handle and lid assembly for a 2009 chemical dosing tank, or a cover specific to the Control Basic Next pump — and the visually similar part from another generation may not seat correctly.

• Check the unit label for the model and series name, then match the part to that family.
• Use the exploded view in the manual and note the position number next to the component you need.
• Measure before ordering — tank volume, tube bore and wall thickness, cable length, and the diameter of any threaded inlet or probe holder.
• Note the probe connector and whether the cable is fixed to the electrode or detachable.
• Keep the old part as a reference for comparison when it arrives.

Dosing & measuring at PoolParthub.com

Here you will find components for dosing and measuring systems from AstralPool, Fluidra and Zodiac, covering ranges such as Clorimax, Control Basic, Optima, My Pool RX, pH Perfect, SEL pH and Chlor Expert. Parts are listed with their manufacturer reference so that an item taken from a manual or a service sheet can be matched directly.

The aim is to make a single failed lid, cable, electrode or pump cover easy to source across Europe, keeping an otherwise sound controller or dosing pump in service. If a reference cannot be found in the list, the model name and the position number from the exploded view are usually enough to trace the correct component.