Expansion Tanks
- 100 L to 10,000 L
- PN10 · PN16 · PN25
- −10 °C to 80 °C
- Replaceable bladder
Denwor Closed Expansion Tanks are closed-type tanks, available in various sizes to suit your requirement from 100 L to 10,000 L, with PN10, PN16 and PN25 ratings. They are designed to maintain constant flow inside the hydronic system.
A replaceable rubber bladder holds the system water, and the pre-charged air cushion around it absorbs the expansion and contraction of the water as temperatures and loads change.
Simple, step by step
Pre-charged
The tank is pre-charged with air to suit the system pressure.
Water expands
As the water heats up or the load changes, the extra water moves into the bladder.
Cushion absorbs
The air cushion compresses and takes up the extra volume, so pressure stays steady.
Water returns
When the water cools and contracts, the cushion pushes it back into the system.
Features
- Maintains constant flow inside the closed-loop system
- Designed with replaceable rubber bladders
- Can be operated between −10 °C and 80 °C
- Sizes from 100 L to 10,000 L, to customer requirement, in PN10, PN16 and PN25
- For HVAC, pressure boosting, irrigation, fire fighting and solar applications
Benefits
- Maintains constant water flow
- Reduces stress on the hydronic system
- Reduces pump cycling time
- Avoids water hammering in the system
- Compensates for pressure variations due to load variations
Key specifications
| Type | Closed, bladder type |
|---|---|
| Capacity | 100 L to 10,000 L |
| Pressure rating | PN10, PN16, PN25 |
| Operating temperature | −10 °C to 80 °C |
| Bladder | Replaceable rubber bladder |
Need a size or rating that isn't listed? Ask our engineers.
Where it's used
- HVAC
- Pressure boosting
- Irrigation
- Fire fighting
- Solar
Other products
Pressurization Unit
Air & Dirt Separator
PanelsInterested in the expansion tanks?
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