The Niles Steel Tank Expansion tanks are designed for commercial heating and potable water applications. As 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. This helps eliminate the expansion forces caused by heating and cooling of pressurized systems water.
Expansion Bladder Tanks
Tank air pressure must be field adjusted
- Properly charge the tank to equal 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.
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 bladder
- 125 psi
- Max Temperature 240 degrees F
- Lifting lugs
- 4″ High Skirt with base clips
- Pre-charged bladder
- Quick Ship inventory 5 available sizes from 11 gallons up to 104 gallons.
Optional features:
- 150 psi
- R-16 Polyurethane, closed sell spray foam insulation w/ acrylic topcoat
- Stainless steel construction
- Contact factory for additional features
- Potable water application
Sizing & Selection:
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.
| 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 |
#nilessteeltank