What are the two types of expansion tanks?

There are two main types of expansion tanks: Compression and Bladder/Diaphragm. A compression tank (also called a plain steel tank) is always mounted horizontally somewhere above the boiler – the higher the location, the smaller the tank.

Are there different size expansion tanks?

In fact, if unsure that your expansion tank will be able to safely accommodate your system, it is common practice to choose an expansion tank that is one size larger than the required size. As a general rule of thumb with expansion tanks, it is better to oversize than to undersize.

What kind of expansion tank do I need?

General Guidelines for Sizing an Expansion Tank

Water Heater Capacity Supply Pressure (psi) Expansion Tank Size
40 to 60-gallon 40-50 psi 2-gallon
40 to 60-gallon 60-80 psi 3.2-gallon
80-gallon 40 psi 2-gallon
80-gallon 50-60 psi 3.2-gallon

What is the most common type of expansion tank?

A closed tank with a bladder or diaphragm is the most common expansion tank. This expansion tank is similar to a closed tank, except within the tank there is a bladder or diaphragm that separates the water and the air. As the hydronic hot water volume expands the water pushes against the bladder or diaphragm.

What PSI should my expansion tank be?

between 50 and 60 PSI
The recommended water pressure is between 50 and 60 PSI. Thermal Expansion Tanks contain an air bladder which is pressurized with air, and expands and contracts to absorb the expanded water from the water heater. needed. Check the air pressure in the Expansion Tank using a tire gauge.

What is the difference between an expansion tank and a pressure tank?

The most significant difference between expansion and pressure tanks is their functionality. An expansion tank handles water expansion and provides protection for water valves and heaters. On the other side, the pressure tank lengthens the lifespan of the pump.

Which is the correct name for an expansion tank?

You’ll also choose between (using Amtrol / Extrol as an example) an expansion tank that includes a fill valve (Amtrol Fill-Trol) and one that does not (Amtrol-Extrol) the latter means you’re using an external or separate boiler fill valve.

How big is an extrol hydronic expansion tank?

Extrol ASME commercial expansion tanks are designed to control pressure in closed hydronic heating systems. Available in diaphragm, partial acceptance bladder and full acceptance bladder designs, these tanks range in size from 8 gallons (30 liters) to 3,963 gallons (15,000 liters).

How big is an expansion tank for a cast iron boiler?

Typical Expansion Tank Sizes for a Cast Iron Radiator type typical residential heating system For a 100 MBTUH boiler you’d use either an Amtrol Extrol #60 or an Amtrol Fill-Trol #111 For 125-150 MBTUH you’d use an Amtrol Extrol #90 For a 175-200 MBTUH boiler you’d use an Amtrol Extrol #SX30V

When did the first Amtrol expansion tank come out?

Nearly seven decades after inventing the first diaphragm expansion tank, Amtrol’s lineup now includes specialty models engineered for modern, high-efficiency systems. None of it would have been possible without Extrol – The One That Started It All™.