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The Harvey G1230 Top Cap is the primary pressurized cover for the H2O and H25 series valve assembly. It houses the manual regeneration trigger and acts as a critical seal for the upper head assembly. Manufactured to genuine OEM standards, the G1230 ensures your softener remains watertight under constant mains pressure.
⚠️ Compatibility Check
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Supported Models: Fits all H2O internal systems, including:
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Identification: Standard 3/4" H2O-prefix twin tank models.
Key Symptom: The "Regen Button" Leak
The most common reason for replacing the G1230 Top Cap is water weeping or spraying from the manual regeneration (regen) button located on top of the softener.
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The Cause: Over time, the internal seals within the cap assembly perish or become brittle. Because these seals are integrated into the cap housing, a full replacement of the G1230 is the most reliable and straightforward fix.
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The Risk: Ignoring a top-cap leak can lead to salt crusting (bridging) on the internal components and potential water damage to the softener cabinet.
Features & Benefits
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Genuine Harvey Spare: Guarantees a perfect thread-match and pressure rating for your valve assembly.
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Stop Leaks Instantly: Specifically engineered to resolve the "wet button" issue common in aging H2O units.
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Durable Construction: Made from high-grade, glass-reinforced polymer to resist chemical degradation and pressure surges.
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Easy Installation: A simple screw-on replacement that can be performed in minutes without the need for specialized plumber's tools.
