Toto spares, Toto parts, Toto spare parts, Spare code no : DH840G - SHXAQ45 - Valve unit,
However, based on patterns in TOTO spare parts naming and what limited listings exist, I can offer hypotheses about what this valve unit might do, and how to figure out its actual function / use in your system. Then, if you want, I can try deeper searches in Japanese / TOTO internal catalogs.
What I found / hints
- A Chennai parts‑supplier listing (Bharat Enterprises) enumerates spare parts like SHXAQ40, SHXAK47, SHXAK44, etc., as “complete valve units” (e.g. “complete valve unit 3.0 LPF / 0.5 LPF”) under “TOTO spares”. WELCOME TO BHARAT ENTERPRISES
- The presence of “SHXAQ45” in your name suggests it’s part of the “SHX A Q” series of TOTO valve / flush / control assemblies. The suffix “45” might refer to a variant / generation / capacity.
- The “DH840G” prefix might indicate a model line or installation family (e.g. “DH” for a certain type of unit, “840G” for variant).
So it’s likely that DH840G‑SHXAQ45 is a valve / flush / control unit used in TOTO toilets / washlets or related assemblies (inlet / flush / auto flush or sensor control) rather than a diverter or spout.
Possible uses / functions (educated guesses)
Given its naming and context, here are the likely use cases for such a valve unit:
Potential UseReasoning / EvidenceWhat to checkFlush valve / solenoid control for toilet / auto‑flush systemTOTO uses many “SHX” prefixed units in their flush / sensor / auto‑flush kits (e.g. sensor flush valves, solenoids).If part of a toilet tank or in‑wall system, likely related to the flushing mechanism.Control / diaphragm valve / regulatorThe “valve unit” term suggests it may regulate flow / pressure, or open/close water path under control (e.g. via solenoid)Check whether it has electrical connections or solenoid coil.Dual‑flush or timed / metered flush assemblyMany valve units in modern toilets provide options (half flush / full flush) or controlled flush durations.Look for two ports or internal flow paths.Part of sensor / automated / electronic toilet / washlet accessoriesThe “SHX” series parts in TOTO often correspond to flush / sensor / control parts in advanced toilet models.Check whether this unit connects to sensors, wiring, control boards.
What you should check / what information to gather
To confirm exactly what DH840G‑SHXAQ45 does in your setup, here are things you can look at:
What to inspectWhat to look forHow it helps identify functionNumber of ports / inlets / outletsHow many water lines connect (one inlet, one outlet, multiple)?Helps tell whether it's a diverter, flush, or regulator.Electrical connections / coils / wiringDoes it have a solenoid coil or electronic connector?If yes, then it’s an electrically actuated valve (flush / solenoid).Markings / stamping / model labelsSometimes there will be small engravings with flow rating, voltage, etc.Can help in cross‑referencing with catalogs.Position in the plumbing systemIs it inside the toilet tank, behind the wall, or under a washlet?Determines whether it is a flush, fill, or control valve.Internal parts (if opened carefully)Diaphragms, springs, pistons etc.Gives clues whether it's for metering, control, or simple on/off.
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