Expansion Tanks for HVAC and Pressure Boosting
Grundfos offers expansion tanks for both HVAC and pressure boosting applications. All expansion tanks can be installed both vertically or horizontally, and allow the bladder to be replaced without having to remove the tank from its mounting an be equipped with large service openings.
HVAC Expansion Tanks: They are designed to absorb the expansion forces and control the pressure in heating/cooling systems. The two types of expansion tanks Grundfos offers for HVAC applications are:
- Diaphragm, ASME, Fixed-type: The system’s expanded water (fully compatible with water/glycol mixtures) is contained in heavy-duty diaphragm that prevents tank corrosion and waterlogging problems.
- Bladder, ASME, Removable: The system’s expanded water (fully compatible with water/glycol mixtures) is contained in a full acceptance heavy-duty butyl bladder that prevents tank corrosion and waterlogging problems.
Pressure Boosting Tanks: The Grundfos GFXA pressure boosting expansion tanks are replaceable bladder type pre-charged hydro-pneumatic tanks that meet ASME code design regulations and comply with NSF/ANSI Standard 61. The GFXA expansion tanks are used in commercial and industrial water well, pressure boosting, or other non-heated potable water system applications — providing sufficient flow based on demand, by delivering water under pressure between pump cycles (e.g., required tank drawdown.) Water is stored in a replaceable butyl bladder, eliminating problems such as water-logging and tank corrosion.
For other air management solutions see air separators.