WellMate Tank, 80 Gallon 21" x 62"

The Pentair WellMate WM-23 is an 80-gallon composite pressure tank measuring 21" x 62", part of WellMate's Quick Connect series engineered to make installation and servicing easier than ever. Combining generous drawdown capacity with rust-proof composite construction and innovative threadless connections, the WM-23 is built for demanding well systems that value both strong performance and long-term serviceability.

Quick Connect Design

The Quick Connect series uses threadless connections at both the service connection and the tank drain assembly, greatly simplifying installation and future service compared with traditional threaded tanks. This design accommodates a variety of plumbing connections, whether plastic, metallic, threaded, or sweat, giving installers welcome flexibility to work with whatever materials the job calls for. The tank can even be rotated after installation so the product specifications and labeling remain accessible, a thoughtful touch that pays off during later service visits.

Inside, WellMate's exclusive replaceable butyl air cell can be used in applications where continual chlorine use is required, an important advantage for systems that disinfect with chlorine and would otherwise degrade a standard air cell over time. The seamless composite shell will never rust, eliminating the corrosion failures that limit steel tanks, and the captive-air design reduces pump cycling to extend pump life, lower energy use, and maintain steady household pressure.

• 80-gallon capacity in a 21" x 62" composite pressure tank
• Quick Connect threadless service and drain connections
• Compatible with plastic, metallic, threaded, or sweat plumbing
• Replaceable butyl air cell suited to continual chlorine use
• Rust-proof composite shell with captive-air drawdown
• Tested and certified to NSF/ANSI Standard 61, Section 8 and Annex G by WQA

The WM-23 has been tested and certified by the Water Quality Association to NSF/ANSI Standard 61, Section 8 and Annex G, meaning it meets stringent requirements for materials in contact with potable water. That third-party certification offers added assurance for drinking-water applications. The replaceable air cell design also means the tank can be serviced rather than simply replaced if the cell ever wears out, extending the useful life of your investment.

For installers seeking a large-capacity, easy-to-service, corrosion-free pressure tank that handles chlorinated systems with ease, the Pentair WellMate WM-23 delivers proven engineering and lasting reliability. Set the proper air pre-charge during commissioning, and it will provide smooth, dependable pressure and reduced pump wear for years to come.