3/4-Inch In-Line Water Heater Limescale Prevention System

The American Valve ScaleRX 3/4" (MPN: SCALERX34) is a chemical-free scale prevention device engineered to reduce limescale accumulation by 76% in tankless water heaters and appliances without electricity or replacement filters.

Key Features

Patented Turbulent Galvanic Polarization (TGP) Technology

Changes the crystal structure of dissolved minerals to prevent hard water minerals from adhering to internal heating elements and heat exchangers.

Power and Chemical-Free Operation

Operates entirely on water pressure without requiring electrical connections, batteries, salt, or routine filter element replacements.

High-Flow Stainless Steel Construction

Constructed with a durable stainless steel body rated for flow rates up to 14.1 GPM, maintaining standard water volume with negligible pressure drop.

Universal Piping Compatibility

Features standard 3/4-inch Female NPT threaded connections for simple installation with copper, PEX, PVC, and CPVC piping systems.

Product Details

• Connection Size & Type: 3/4" Female NPT x Female NPT
• Maximum Flow Rate: 14.1 GPM
• Operating Pressure Range: 4 – 145 PSI
• Operating Temperature Range: 40°F – 100°F
• Body Material: Stainless Steel
• Dimensions: 9.62" L x 2.00" W x 2.00" H
• Scale Reduction Rating: 76% (IAPMO R&T certified)
• Piping Material Compatibility: Copper, PEX, PVC, CPVC
• Installation Environment: Suitable for indoor or outdoor application

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Additional Information

• Brand: American Valve
• MPN: SCALERX34

American Valve ScaleRX 3/4" FAQ

How does the ScaleRX system prevent limescale without chemicals?

The unit uses internal TGP galvanic electrodes to alter the crystalline structure of calcium and magnesium ions in the water, preventing them from forming hard scale deposits on heat exchanger surfaces.

Does the ScaleRX 3/4" require electrical wiring or maintenance?

No. The unit operates passively via fluid movement and contains no electrical components, sacrificial anodes, or cartridges that require replacement.

Will this unit reduce water pressure in a residential tankless system?

No. The straight-through design supports flow rates up to 14.1 GPM, which exceeds standard residential tankless water heater output requirements without restrictive pressure drop.

Can the ScaleRX SCALERX34 be installed outdoors?

Yes. The stainless steel housing is rated for both indoor and outdoor installations, provided ambient temperatures stay within operating guidelines and above freezing.

Where should the ScaleRX be installed relative to the water heater?

It should be installed directly on the cold water inlet line feeding the tankless water heater or appliance to maximize heat exchanger protection.

Weight	3.0 lb
Certifications	Water Sense
Height	2.00 in.
Length	2.00 in.
Material	Stainless Steel
Room	Kitchen
Type	Whole House Conditioning
Width	9.62 in.
Inventory Number	AMVSCALERX34
MPN	SCALERX34