Harvey G1491 Shuttle Valve Assembly Kit (G1220 & G1545) | Genuine Replacement for H2O Twin Tank Softeners

Restore your water softener’s efficiency with the Genuine Harvey G1491 Shuttle Valve Assembly Kit. This comprehensive kit is the primary solution for internal H2O-based twin tank systems experiencing bypass or drainage failures. Comprising the G1220 Shuttle Valve and the G1545 Service Kit, this assembly provides a complete refresh of the shuttle mechanism, ensuring your system switches tanks seamlessly without wasting water.

⚠️ Compatibility Notice

• Suitable for: Harvey Crown, Mini Max, TwinTec S3, TwinTec S4, and all H2O-prefix twin tank models.

• Not Suitable for: Newer H20b or H20c models. Please verify your model prefix before ordering.

Key Symptoms: Why You Need This Part

If your water softener is exhibiting the following behaviors, the G1491 Shuttle Valve is likely the culprit:

• Continuous Water Running to Drain: This is the #1 indicator. If the shuttle valve fails to seat properly, water will constantly bypass the system and flow into the waste pipe.

• Hard Water Leaking Through: A worn shuttle valve can prevent the system from fully sealing, allowing untreated hard water to mix with your softened water supply.

• Failure to Switch Tanks: If one tank is exhausted but the system fails to toggle to the second cylinder, the shuttle valve may be stuck or the seals (G1545) may have perished.

• Low Pressure Post-Softener: Debris or a fractured shuttle valve can cause internal flow restrictions.

Features & Technical Benefits

• OEM Reliability: Genuine Harvey components manufactured to precise tolerances for a leak-free fit.

• Complete Assembly: Includes the G1220 Shuttle Valve and the G1545 Service Kit (essential seals and internal components).

• Cost-Effective Repair: Replacing the shuttle assembly is the most common fix for drainage issues, often saving the cost of a full unit replacement or expensive engineer call-outs.

• Plug-and-Play Maintenance: No electronic reprogramming required; this is a purely mechanical replacement.

What’s in the Box?

1. G1220 H2O Shuttle Valve: The main mechanical switching component.

2. G1545 Service Kit: High-grade O-rings and internal seals to ensure a watertight pressurized environment.