21 x 62 Natural Mineral Tank – 4″ Top Opening with Base

The 21″ × 62″ Natural Mineral Tank provides substantial media volume for commercial water-softening, filtration, ion-exchange, and specialty media systems. Its 21-inch-diameter configuration creates increased media-bed area for equipment requiring greater treatment capacity than standard residential mineral tanks.

A 4-inch top opening provides access for a compatible commercial control valve, tank adapter, riser tube, or internal distributor assembly. Many standard control valves require a reducer or adapter before they can be installed on a 4-inch tank neck.

Composite FRP construction provides corrosion resistance and structural strength without the rust concerns associated with conventional steel vessels. The natural exterior offers a clean, professional appearance for commercial equipment rooms, filtration skids, OEM systems, and industrial pretreatment installations.

An included standard support base helps maintain the vessel in its required vertical position. A 21×62 tank is commonly configured with approximately 7 cubic feet of compatible treatment media, subject to media density, gravel underbed, bed-depth requirements, freeboard, and backwash expansion.

The selected control valve, distributor, inlet piping, and drain system must provide the service and backwash flow required for the tank diameter and media. Proper hydraulic sizing is essential for consistent treatment performance.

Technical Specification

Key Features

• 21” diameter x 62” height FRP mineral tank
• Natural fiberglass exterior finish
• 4” top opening for easy media loading and service
• Durable fiberglass reinforced plastic construction
• Corrosion-resistant and pressure-rated design
• Includes a stable base for secure vertical installation
• Compatible with standard commercial control valves
• Suitable for high-flow water-treatment systems

Applications

• Large whole-house water filtration systems
• Commercial and light-industrial carbon filtration
• High-capacity neutralizer and calcite systems
• High-flow commercial water softeners
• Specialty and mixed-media filtration systems
• OEM and private-label water-treatment assemblies

Shipping Information

Optimal Purity Solutions is committed to fast, reliable, and professional fulfillment for our authorized dealer network.

Fulfillment & Processing

• Order Processing: Most in-stock orders ship within 1–2 business days

• Custom/OEM Builds: Lead times vary by configuration; your sales representative will confirm timelines

Shipping Coverage

• Domestic: Nationwide shipping throughout the United States

• International: Available for qualified distributors (terms and transit times vary)

Carriers & Methods

• Shipments are sent via trusted national freight and parcel carriers

• LTL/FTL freight available for pallets and bulk orders

• Expedited shipping options available upon request

Packaging & Handling

• Products are professionally packaged to protect against damage in transit

• Palletized and freight shipments are secured and labeled to industry standards

Tracking & Support

• Tracking information is provided once your order ships

• Our logistics team is available to assist with routing, delivery coordination, and special requirements

Important Notes

• Shipping costs are calculated based on weight, dimensions, destination, and service level

• Damages or discrepancies must be reported within 48 hours of delivery

• Products are sold exclusively through authorized water treatment dealers and partners