Description
Zodiac electrode tightening ring R0740600
The Zodiac electrode tightening ring R0740600 is the original transparent locking nut used to secure the salt chlorinator electrode in the clear cell body.
It clamps the cell firmly in position while still allowing easy access to the electrical terminals for connection and maintenance, helping to keep the
installation watertight and mechanically stable.
Role of the Zodiac electrode tightening ring
This transparent threaded ring is screwed onto the cell body to hold the electrode cartridge in place. When tightened correctly, it compresses the
sealing O-rings around the electrode, preventing leaks and ensuring that the water circuit through the cell remains closed. At the same time, its
shape leaves space around the terminals so that the power cable can be connected and inspected without removing the ring.
Compatibility with Zodiac salt chlorinators
The electrode tightening ring R0740600 is used on a range of Zodiac salt chlorination systems that share the same clear cell body and locking thread.
It is the correct replacement ring when the spare parts diagram for your unit lists R0740600 as the electrode tightening ring or electrode fixing thread.
- Zodiac Tri salt chlorinators.
- Zodiac Tri Expert and Tri Expert LS models.
- Zodiac eXO iQ and eXO iQ LS salt chlorinators.
- Zodiac Hydroxinator and Hydroxinator iQ (MagnaPool) systems.
When the original transparent nut becomes opaque, cracked or difficult to tighten, replacing it with this genuine Zodiac tightening ring restores the
mechanical security and visual control of the cell area.
Technical characteristics
- Original Zodiac locking ring designed for the clear cell body used on Tri, eXO and Hydroxinator ranges.
- Transparent plastic allows visual inspection of the sealing zone and electrode head.
- Threaded design sized exactly for the corresponding Zodiac cell neck.
- Profile optimised to compress the cell O-rings evenly for a reliable seal.
- Resistant to normal pool temperatures, salt levels and standard water treatment chemicals.
When to replace the tightening ring
Although the tightening ring has no electrical function, its condition is essential for a leak free and reliable installation. Exposure to UV, chemicals
and repeated tightening cycles can gradually affect the plastic.
- Visible cracks, chips or deformation on the transparent nut.
- Ring that no longer tightens smoothly or jumps on the thread.
- Persistent drips or salt deposits around the cell neck despite good O-rings.
- Strong loss of transparency that makes visual inspection of the sealing area difficult.
If any of these symptoms are present, changing the ring at the same time as checking or renewing the O-rings is a simple and effective preventive action.
Installation guidelines
Replacing the Zodiac electrode tightening ring R0740600 is straightforward and can usually be done during routine cell cleaning or inspection. Always
work with the filtration pump stopped and the line depressurised.
- Stop the filtration pump and close any valves necessary to avoid water flow through the cell.
- Disconnect the power cable from the cell terminals to give clear access to the ring.
- Unscrew the old tightening ring by hand, checking the cell O-rings and sealing surfaces as you remove it.
- Clean the cell neck and electrode head, removing scale or debris that could affect sealing.
- Renew the O-rings if they are flattened, cracked or hardened before fitting the new ring.
- Place the electrode correctly in the cell body and screw on the new R0740600 ring by hand until it is firmly seated.
- Reconnect the power cable, restart the filtration pump and check carefully for any leaks around the cell neck.
Good practice for long term reliability
Correct handling of the tightening ring and cell assembly will extend the life of this spare part and maintain a secure seal over many seasons.
- Tighten the ring firmly by hand but avoid using tools that can over tighten or damage the plastic.
- Keep threads and sealing surfaces clean to make installation smoother and reduce wear.
- Inspect the ring and O-rings at the start of each season and after any winterising procedure.
- Rinse the cell area with fresh water if it is exposed to concentrated chemicals or cleaning products.
With a correctly installed Zodiac electrode tightening ring R0740600 and sound O-rings, the clear cell body remains securely sealed and the electrode
is held in its optimal working position for reliable salt chlorination.
