Product Overview
The Pentair 521378 IntelliChem Acid Container is a genuine OEM Pentair replacement chemical tank designed for compatible IntelliChem water chemistry controller systems. This container is used for acid feed applications where the system requires a dedicated acid storage tank but does not require a tank-mounted pump included with the container.

This part is commonly used as a replacement acid container for IntelliChem chemical automation systems or as part of a properly configured equipment-pad chemical feed setup.

Ideal For
Replacing or adding an acid container for compatible Pentair IntelliChem water chemistry automation systems where the pump is already installed separately or supplied by another approved setup.

Key Features

• Genuine Pentair OEM replacement container
• Designed for Pentair IntelliChem chemical automation systems
• Acid container only
• Pump not included
• Used for acid feed / pH control applications
• Helps support automated pH adjustment when paired with the correct IntelliChem components
• Chemical-resistant container construction
• Equipment-pad installation design
• Common replacement for damaged, worn, or missing acid tanks
• Professional installation and calibration recommended

Benefits
The Pentair 521378 Acid Container provides a dedicated storage container for acid feed applications in compatible IntelliChem systems. When paired with the correct controller, pump, tubing, injection fittings, and sensors, it helps support automated pH control and reduces the need for frequent manual acid dosing.

Because this is an OEM Pentair part, it is designed to match the intended IntelliChem chemical feed setup and provide proper fitment with compatible system components.

Important System Note
This is the acid container without pump. It is not a complete IntelliChem system and does not include the IntelliChem controller, sensors, pump, tubing, injection fittings, or other installation accessories unless otherwise stated.

Always confirm the full system layout before ordering.

Compatibility
Designed for use with compatible Pentair IntelliChem water chemistry controller systems.

Commonly used for:

• IntelliChem acid feed setups
• pH control chemical automation
• Replacement acid containers
• Pool and spa chemical feed systems
• Equipment pad chemical storage applications

Confirm controller compatibility, chemical type, feed pump setup, tubing layout, and required fittings before ordering.

Specifications

What’s Included

• Pentair IntelliChem acid container
• Factory container components included with the unit

Not Included / May Be Required

• Tank-mounted pump
• IntelliChem controller
• pH sensor
• ORP sensor
• Flow cell
• Chemical tubing
• Injection fittings
• Check valves
• Wiring or transformer components
• Installation hardware not included in factory packaging

Chemical Safety Notice
Use this container only for the approved chemical type in the installed system configuration. Never mix acid and chlorine. Acid containers should be installed with proper ventilation, containment, labeling, check valves, and separation from chlorine or other incompatible chemicals.

Customer-Facing Q&A

Q: What is Pentair part 521378?
A: Pentair 521378 is an IntelliChem acid container used with compatible Pentair water chemistry controller systems.

Q: Does this include the pump?
A: No. This version is the acid container without pump.

Q: Is this the complete IntelliChem controller system?
A: No. This listing is for the acid container only. The controller, sensors, feed pump, tubing, and fittings are not included unless stated separately.

Q: What chemical is this container used for?
A: It is intended for acid feed applications used for pH control in a compatible IntelliChem setup.

Q: Can this be used for chlorine instead of acid?
A: No. Do not interchange acid and chlorine containers unless the system is specifically configured and approved for that chemical use. Acid and chlorine must never be mixed.

Q: What size is the container?
A: This container is commonly listed as a 4-gallon IntelliChem chemical container. Confirm physical inventory before publishing.

Q: Is professional installation recommended?
A: Yes. Chemical feed systems should be installed and calibrated by a qualified pool professional familiar with chemical automation and safe chemical handling.