


High Performance and High Efficiency
Vaughn Thermal's storage tanks - available in a wide variety of sizes - are the ideal storage vessels for geothermal heating and cooling applications due to its unique construction and tailorable features.
The heart of every Vaughn water heater and storage tank is a superior heavy-gauge steel storage vessel lined with specially formulated Hydrastone cement lining and equipped with non-ferrous solid copper fittings at all tanks openings. This construction ensures a long lasting and energy efficient unit. A unique combination cold water inlet and non-corrosive diffuser prevents incoming water from mixing too quickly in the tank, thus preventing turbulence and assuring the delivery of constant hot water, while a built-in heat trap prevents heat from the vessels from radiating through the piping during standby periods.
Customize your geothermal storage tank with large plumbing connections; 1.5", 2" and 3" are currently available, as are optional electric backup elements and side-mount all-copper finned heat exchangers. These options make the Vaughn storage tank the ideal choice for any hydronic geothermal system.


Heavy Duty Construction
- Hydrastone cement lining provides long tank life
- No sacrificial anode rod
- Plastic jacket will not rust, scratch or dent eliminating damage and is maitenance free
High Efficiency
- 2" of premium spray-in foam insulation provide the industry's lowest standby heat loss
No Sacrificial Anode Rod
- Reduces operation expenses by eliminating periodic inspection and replacement costs associated with maintaining an anode rod
Warranty Information
- 7 year limited tank warranty
Dimensional Data
Model | Capacity (gal.) | Diameter (in.) | Height (in.) |
S40D4 | 40 | 20 | 58 |
S50D4 | 50 | 22 3/4 | 51 |
S65D4 | 65 | 26 | 47 7/8 |
S80D4 | 80 | 26 | 58 |
S120D4 | 119 | 28 | 69 |
Recovery Capacity (Gal./Hour) For Various Wattages & Water Temperature Rises
Wattage | 130° | 120° | 110° | 100° | 80° | 60° | 40° | 20° |
1500 | 4.6 | 5.0 | 5.5 | 6.1 | 7.6 | 10.1 | 15.4 | 30.7 |
2000 | 6.3 | 6.8 | 7.4 | 8.2 | 10.2 | 13.6 | 20.5 | 41.0 |
2500 | 7.8 | 8.5 | 9.2 | 10.2 | 12.8 | 17.1 | 25.6 | 51.2 |
3000 | 9.4 | 10.2 | 11.1 | 12.3 | 15.4 | 20.5 | 30.7 | 61.5 |
3500 | 11.0 | 11.9 | 13.0 | 14.3 | 17.9 | 23.9 | 35.9 | 71.7 |
4000 | 12.6 | 13.6 | 14.9 | 16.4 | 20.5 | 27.3 | 41.0 | 82.0 |
4500 | 14.1 | 15.3 | 16.7 | 18.4 | 23.1 | 30.7 | 46.1 | 92.2 |
5000 | 15.7 | 17.0 | 18.6 | 20.5 | 25.6 | 34.2 | 51.2 | 102.5 |
5500 | 17.3 | 18.8 | 20.5 | 22.5 | 28.2 | 37.6 | 56.3 | 112.7 |
6000 | 18.9 | 20.5 | 22.3 | 24.6 | 30.7 | 40.8 | 61.5 | 123.0 |
7200 | 22.6 | 24.5 | 26.8 | 29.5 | 36.9 | 49.1 | 73.8 | 147.6 |
9000 | 28.3 | 30.7 | 37.2 | 41.0 | 51.2 | 68.3 | 102.5 | 205.0 |
10000 | 31.5 | 34.1 | 37.2 | 41.0 | 51.2 | 68.3 | 102.5 | 205.0 |
12000 | 37.8 | 41.0 | 44.7 | 49.2 | 61.5 | 82.0 | 123.0 | 246.0 |
Downloads
Technical Documents
- Geothermal Brochure PDF (2.2 MB)
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