Description
Watts PLT-20 Expansion Tank — SKU 0067372
The Watts PLT-20 Expansion Tank is a pre-pressurized diaphragm-type expansion tank engineered for residential and light commercial hydronic heating systems. Designed to absorb the thermal expansion of water as it heats and cools, the PLT-20 safeguards your system components — including boilers, pumps, and piping — from potentially damaging pressure fluctuations.
Why Use an Expansion Tank?
In a closed-loop hydronic system, water expands when heated. Without a properly sized expansion tank, this expansion creates excess pressure that can trip relief valves, cause leaks, and shorten the life of system components. The Watts PLT-20 provides a dedicated volume to accommodate this expansion, maintaining stable operating pressure and extending system longevity.
Key Features
- Pre-pressurized design for quick, straightforward installation
- Diaphragm construction separates the air charge from system water, preventing waterlogging
- Durable steel tank construction for long service life
- Suitable for residential and light commercial closed-loop hydronic heating applications
- Compact form factor for easy installation in tight mechanical spaces
- Manufactured by Watts — a trusted name in flow control and water quality products
Applications
- Residential and light commercial hydronic heating systems
- Closed-loop hot water boiler systems
- Radiant floor heating systems
- Baseboard and panel radiator systems
Why Choose Watts?
Watts Water Technologies has been a leader in plumbing, flow control, and water quality products for over a century. The PLT series expansion tanks are built to meet the demands of modern hydronic systems, delivering dependable performance and peace of mind for installers and building owners alike.
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