NORYL Flow Detector for Pool – 2-Pin Round Plug (Ø 50 mm)

CCEI Noryl Flow Switch with 2-Pin Round Plug: Essential Safety for Automatic Treatment Systems

The Noryl flow switch is an essential safety device in any automatic swimming pool water treatment system. It is installed on the return pipe, just before the electrolyzer cell or the pH regulator's analysis chamber, and detects the presence or absence of water circulation in the hydraulic circuit. As soon as the water flow becomes insufficient or stops—for example, when the filtration pump stops, a valve is closed, or a filter is clogged—the detector sends a signal to the control unit to immediately stop chlorine production or chemical injection. This safety feature protects equipment, preserves water quality, and complies with regulatory safety requirements for automated systems.

Why is a flow switch mandatory on an electrolyzer or pH regulator?

A salt chlorinator produces chlorine by electrolyzing saltwater circulating through its cell. If the water stops flowing while production remains active, chlorine accumulates at an extreme concentration in the cell—which can cause rapid deterioration of the electrodes, or even rupture of the cell itself. Similarly, a pH regulator equipped with a dosing pump injects an acid or basic corrector into the pipe. If injection occurs without water circulation, the concentrated product stagnates in the piping or flows back into the analysis chamber, which can damage the probes and skew readings for several days.

The flow switch prevents these two scenarios by automatically shutting down the device as soon as circulation stops. It is a passive safety device that operates without user intervention: as long as water circulates normally, the detector's electrical contact remains closed, allowing the device to operate. As soon as the flow drops below the minimum threshold (4 m³/h for this model), the contact opens and cuts off power.

CCEI Compatibility: Limpido, Phileo, Oxeo, Phenix, and all regulators with 2-pin plug

This Noryl flow switch is equipped with a 2-pin round plug, the standard connection format for CCEI devices. It is compatible with the entire range of CCEI automatic treatment systems, including:

• Limpido Electrolyzers (Limpido XC LAB, Limpido Pro pH, Limpido Pro Lab, Limpido LTE)
• Phileo pH Regulators (Phileo, Phileo LT)
• Oxeo pH and ORP Regulators (Oxeo, Oxeo LT, Oxeo SP)
• Phenix Combined Regulators (pH + ORP + Redox analysis)

It connects directly to the control unit via its 2-pin connector. No electronic configuration is necessary: the system automatically recognizes the presence of the flow switch and activates the safety function.

Technical Specifications: Noryl, 3/4 thread, 7 cm paddle, 4 to 22 m³/h flow rate

The body of the detector is made of Noryl, an engineered polymer resistant to pool chemicals (chlorine, acid, soda) and UV. This material ensures maximum longevity even in a chemically aggressive environment.

Connection is made via a 3/4 inch thread. Installation is done on the return pipe using a Ø 50 mm saddle clamp (not supplied) and a threaded adapter, which allow the detector to be mounted without cutting the pipe. The detection paddle is 7 cm long — this is the moving element that pivots under the action of water flow and activates the electrical contact.

The detector operates within a flow rate range of 4 to 22 m³/h. Below 4 m³/h, the contact opens and stops the connected device. Above 22 m³/h, the detector remains in the active position but should not be used under these conditions for prolonged periods, as excessive flow can prematurely wear the paddle. These values correspond to standard flow rates for residential filtration pumps, which typically run between 8 and 18 m³/h.

Installation: on Ø 50 mm pipe, upstream of the cell or analysis chamber

The flow switch is mounted just before the electrolyzer cell or the pH regulator's analysis chamber, on the return pipe, after the filter. It must be positioned so that the paddle is free to pivot under the action of the flow — avoid placing it in an elbow or too close to a fitting, and respect the direction of water flow indicated by the arrow molded on the detector body.

Installation via a saddle clamp allows for installation without cutting the pipe and without draining the circuit. The clamp is fixed around the Ø 50 mm pipe, then the pipe is drilled through the clamp, and the adapter and then the detector are screwed in. The 2-pin electrical cable is then connected directly to the dedicated socket on the electrolyzer or regulator housing.

When is a flow switch absolutely required?

The use of a flow switch is mandatory in the following cases:

• Installation with a variable speed filtration pump, because the flow rate can vary depending on the program and fall below the electrolyzer's operating threshold without the pump stopping completely.
• Installation with a technical room located above the pool level, because if the pump stops, water can flow back and cause the circuit to lose prime, leaving the cell or probes dry.
• Installation with multi-way valves or bypasses, which can accidentally cut off or reduce flow to the electrolyzer or regulator without stopping the main pump.

Even when these situations do not apply, installing a flow switch remains excellent preventive safety practice that protects your equipment investment and prevents costly breakdowns.

Diagnosis and replacement: how to test a faulty flow switch

If your electrolyzer or regulator displays a flow error or does not start despite the pump running, the flow switch may be the cause. To test its proper functioning, unplug the connector from the housing, set a multimeter to the "Ohms" function, then test for continuity between the two pins of the connector with filtration running. If the device indicates 0 ohm, the detector is working normally. If no value is displayed, the internal contact is faulty and the detector must be replaced.

Common causes of failure include mechanical wear of the paddle (which can get stuck or break after several years), fouling of the mechanism by limescale deposits or algae, or oxidation of electrical contacts in a humid environment. Replacing the flow switch is a simple operation that does not require draining the circuit.

Shipping within 1 business day

Our packages are shipped daily via DPD, Colissimo, Chronopost, UPS, and DHL and are insured.

All orders placed before noon, Monday to Friday, are shipped the same day, and orders placed after noon are shipped the following business day.

Shipping costs

For mainland France, shipping costs are free for purchases over 150 euros. Below this amount, the delivery cost depends on the weight of your package and the carrier you select.

For international shipments, shipping costs can vary, depending on the destination and the cargo, from 4 euros to over 100 euros.

Returns

You can return your product within the 14-day withdrawal period upon receipt of your order by contacting customer service via email at contact@poolplanet.fr