Standard Features:
- Vertical construction
- Carbon steel construction
- ASME code section VIII, Div. 1
- Red oxide shop primer exterior
- Heavy duty Butyl Rubber replaceable bladder
- NSF 61 for potable applications
- 125 psi
- Max Temperature 240 degrees F
- Lifting lugs
- 4″ High Skirt with base clips
- Dried to -50 dew point
- Pre-charged bladder at 12 psi
- Quick Ship inventory 5 available sizes from 175 gallon up to 1040 gallon.
Optional Features:
- 150 psi
- R-16 Polyurethane, closed sell spray foam insulation w/ acrylic topcoat
- Stainless steel construction
- Contact factory for additional features
Thermal Expansion tanks are used to help eliminate the expansion forces caused by heating and cooling of pressurized systems water. The tank air pressure must be field adjusted for proper system operation. It is important to properly charge the tank with enough pressure which equals the cold water supply pressure, prior to filling the system. Failure to properly pressurize the tank will cause the cold supply water to expand the bladder, greatly reduce the expansion capabilities. The heavy duty butyl rubber bladder keeps the system water separate from the tank, eliminating tank corrosion. The Niles Steel Tank Expansion tanks are designed for commercial heating applications and potable water applications. As the water is heated, it expands into the bladder and pushes against the air cushion. As the system cools, the pressure in the tank pushes the system water back into the piping, maintaining system pressure.
| Model | Gal. | (A) OverallHeight | (B) TankHeight | (C) Diameter | SystemConnection | WorkingPressure | Weight |
|---|---|---|---|---|---|---|---|
| EBT-30-063 | 175 | 67″ | 63″ | 30″ | 1-1/2″ | 125 | 465 |
| EBT-30-075 | 210 | 79″ | 75″ | 30″ | 1-1/2″ | 125 | 505 |
| EBT-30-085 | 240 | 89″ | 85″ | 30″ | 1-1/2″ | 125 | 550 |
| EBT-36-072 | 285 | 76″ | 72″ | 36″ | 1-1/2″ | 125 | 675 |
| EBT-36-078 | 310 | 82″ | 78″ | 36″ | 1-1/2″ | 125 | 707 |
| EBT-36-085 | 340 | 89″ | 85″ | 36″ | 1-1/2″ | 125 | 750 |
| EBT-36-090 | 360 | 94″ | 90″ | 36″ | 1-1/2″ | 125 | 780 |
| EBT-42-081 | 435 | 85″ | 81″ | 42″ | 1-1/2″ | 125 | 1185 |
| EBT-42-084 | 453 | 88″ | 84″ | 42″ | 1-1/2″ | 125 | 1216 |
| EBT-42-093 | 505 | 97″ | 93″ | 42″ | 1-1/2″ | 125 | 1304 |
| EBT-48-073 | 500 | 77″ | 73″ | 48″ | 1-1/2″ | 125 | 1293 |
| EBT-48-096 | 675 | 100″ | 96″ | 48″ | 1-1/2″ | 125 | 1550 |
| EBT-48-108 | 765 | 112″ | 108″ | 48″ | 1-1/2″ | 125 | 1685 |
| EBT-48-120 | 860 | 124″ | 120″ | 48″ | 1-1/2″ | 125 | 1870 |
| EBT-48-141 | 1040 | 145″ | 141″ | 48″ | 1-1/2″ | 125 | 2053 |
Sizing & Selection for Niles Steel Tank EBT Expansion Bladder Tanks:
1. Required total piping system volume: ________ Gallons
Calculate the total length of each pipe size (diameter x length) used in the system. Add up volume from any storage vessels or holding tanks in the system.
2. Actual Gallon Volume in the boiler: _______ Gallons. Can be obtained from the boiler manufacturer.
3. Design water temperature:_________ Ranges from 120 to 180 degrees.
4. Minimum water temperature:________ Typically 90 degrees F.
5. Supply water pressure:_______ Ranges from 40 to 110 psi.