3/4-Inch Lead-Free Catalytic Water Conditioner

The Zilmet ZAF034 ActivFlo 3/4" is a salt-free, chemical-free inline water conditioner engineered to protect tankless water heaters, standard tanks, plumbing lines, and household appliances from mineral scale accumulation without requiring electricity or ongoing maintenance.

Key Features

Designed for Whole-Home & Main Water Supply Scale Protection

Engineered for point-of-entry (POE) installation on main supply lines or high-demand branch lines, providing whole-house scale protection across multiple fixtures, appliances, and water heating systems.

Catalytic Alloy Conditioning Technology

Utilizes an internal patented catalytic alloy element to convert dissolved calcium bicarbonate into stable, non-adherent aragonite micro-crystals that pass harmlessly through the system rather than forming hard calcite scale.

Continuous Flow Range (1.9 – 5.9 GPM)

Optimized to support continuous flow demands between 1.9 GPM and 5.9 GPM, maintaining consistent catalytic efficiency during multi-fixture water usage without restricting main-line volume.

Zero-Power & Maintenance-Free Operation

Operates passively on line water pressure without requiring electricity, salt replenishment, chemical additives, or backwash drain lines, eliminating ongoing maintenance and water waste.

Durable Lead-Free Stainless Steel Housing

Constructed with a heavy-duty stainless steel body with standard 3/4-inch MNPT threaded connections, providing long-term structural integrity and corrosion resistance.

Product Details

• Connection Size & Type: 3/4" MNPT x 3/4" MNPT Inline
• Optimum Continuous Flow Range: 1.9 GPM to 5.9 GPM
• Overall Length: Approx. 6 inches
• Housing Material: Lead-Free Stainless Steel
• Internal Technology: Catalytic Alloy Core
• Operating Requirements: No electricity, no salt, no drain line
• Warranty Coverage: Up to 15-Year Manufacturer Limited Warranty

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Additional Information

• Brand: Zilmet
• SKU: ZILZAF034
• MPN: ZAF034
• UPC: 5055143768985

Zilmet ZAF034 FAQ

How does the Zilmet ActivFlo ZAF034 prevent limescale without salt?

As water passes over the internal catalytic alloy core, the fluid shear and metal composition induce a transformation of dissolved calcium and bicarbonate ions into insoluble aragonite crystals. These tiny crystals remain suspended in the water stream rather than sticking to pipe walls, heating elements, or fixture aerators.

How does the ActivFlo ZAF034 differ from the ActivFlo Lite (ZAFL2234) in flow and application?

The two models differ primarily in their flow profile and intended plumbing application:

• Flow Profile: The ActivFlo ZAF034 is engineered for a higher continuous baseline flow range of 1.9 GPM to 5.9 GPM to support broader household water usage. The ActivFlo Lite (ZAFL2234) is optimized for lower continuous flow rates up to 4.2 GPM (with peak flow capability up to 12.4 GPM).
• Application: The ZAF034 functions primarily as a Point-of-Entry (POE) whole-house conditioner or for higher-demand main supply branches. The ActivFlo Lite is designed strictly for Point-of-Use (POU) protection mounted directly at individual appliances, tankless water heater inlets, or single branch lines.
• Connections: The ZAF034 uses male 3/4" MNPT threads, whereas the ActivFlo Lite uses female 3/4" FNPT bi-directional connections.

Where can the ZAF034 be installed in a residential plumbing system?

The ZAF034 features standard 3/4" MNPT threads and can be installed inline as a point-of-entry (POE) unit on the main cold water line entering the home or as a dedicated protector for high-demand water heating configurations.

Does this unit require regular servicing or replacement media?

No. The ActivFlo operates entirely passively with no moving parts, non-sacrificial internal media, salt tanks, or electrical components, requiring zero routine servicing after proper installation.

Will the Zilmet ZAF034 lower my water pressure?

When sized correctly within its recommended flow range of 1.9 to 5.9 GPM, the inline design causes minimal pressure drop across the device.

Weight	3.0 lb
Height	0.75 in.
Length	6.00 in.
Material	Brass
Width	0.75 in.
Inventory Number	ZILZAF034
MPN	ZAF034