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Stiebel Eltron Solar Expansion Tank - 4.4 Gallons - ST118
- 1/2 inch straight thread connection
Product ID • ST1180000000
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Overview
Stiebel Eltron Solar Expansion Tank 4.4 Gallons - ST118 is used for solar hot water heating systems using flat panels or Evacuated Tubes used up to 10 panels.
Modern solar heating systems can reach temperatures of up to 385°F during inactivity. The result is the vaporization of the solar liquid and extreme temperatures in the solar circuit, up to the solar station. This damages parts of the system, including pumps, connection joints and the diaphragm in the expansion tank. Furthermore, in the event of prolonged heat absorption, for example in the summer, when on vacation or if the electricity is out, the pressure of the solar systen can increase to the point of activating the safety relief valve. In order to support the highest possible inactivity temperatures, the special heat-resistant diaphragm in the Stiebel Eltron SolarPlus ST118 expansion tank can withstand temperatures up to 225 Degrees F.
Manuals & Docs
Technical Specs
Stiebel Eltron Solar Expansion Tank 4.4 Gallons - ST118 Techs and Specs
- Capacity
- 4.4 Gallons
- Collectors
- Up to 10
- Body
- Welded Steel
- Connection
- 1/2 inch Male Thread
- Coating
- Epoxy paint
- Diaphragm
- EPDM
- Solutions Medium
- Water, Glycerine and Propylene Glycol solutions
- System temperature range
- 32 to 250°F
- Maximum diaphragm temperature
- 225°F
- Maximum working pressure
- 150 psi
- Pre-charged pressure
- 25 psi
- Size
- 15 inches H by 11 Diameter
- Weigth
- 9 pounds
Info & Links
