COVID-19 Landing Page
Series D expansion tanks are ASME rated pre-charged diaphragm-type pressure vessels. The Series D tank is designed to absorb the expansion forces of heating/cooling system water while maintaining proper system pressurization under varying operating conditions. The heavy duty diaphragm separates system water from the tank air charge thereby eliminating waterlogging problems.
Read more
Manuals (2)
Tank Volume:
33.6 Gallons
Max Accepted Volume:
11.3 Gallons
Max. Working Pressure:
125 psi
Speak with a real person who will go out of their way to help!
Closed Now: Phone Hours
Monday – Friday
8am–7:45pm ET

Product Reviews

Product Q&A

Add-on Item

This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

Why don't we show the price of this item?

We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

To see the price, simply add the item to your cart or sign in.