The problem
The gas released by the chemical accumulates in the pump head: the diaphragm compresses the gas instead of the liquid and the pump does not dose.
Dosing pumps · By application
Self-venting pumps
Sodium hypochlorite and hydrogen peroxide release gas that accumulates in the pump head: with a standard pump head the pump loses its prime and stops dosing. The automatic air bleed pump head expels the gas and prevents the pump from becoming air-locked. For details of the models, visit the series pages: AMS, V and VMS, K and KMS, T and TMS and WD.
- Sodium hypochlorite and peroxides
- Automatic gas bleed
- AMSA, VA and VMSA, KA and KMSA, TA and TMSA, WAD
38l/hMaximum flow rate (AMS)
25barMaximum pressure (AMS)
5Series
Why
Chemicals that release gas
With a standard pump head
The purge valve must be opened to let the gas out every time the problem recurs; in the meantime dosing is interrupted.
With automatic air bleed
The self-venting pump head expels the gas automatically: the pump stays primed and the purge valve does not need to be closed after priming.
The pumps
Self-venting pumps
For details of the models in each series, visit its page using the link at the bottom of the card.
AMSA Series with automatic air bleed
For dosing at high flow rates or back-pressures: up to 25 bar and up to 38 l/h.
VA and VMSA Series with automatic air bleed
The V and VMS series with automatic air bleed pump head, for swimming pools and for residential, healthcare and industrial applications.
KA and KMSA Series with automatic air bleed
The K and KMS series with automatic air bleed pump head: from 18 bar at 1 l/h to 2 bar at 13 l/h.
TA and TMSA Series with automatic air bleed
The T and TMS series with automatic air bleed pump head: up to 20 bar and up to 35 l/h.
WAD with automatic air bleed
Swimming pool pumps with integrated measuring instruments, with automatic air bleed pump head for hypochlorite and hydrogen peroxide.
Self-venting
AMSA Series
Performance
Required with chemicals that release gas (e.g. peroxides), to prevent the pump from becoming air-locked.
| Max pressure (bar) | Max flow rate (l/h) |
|---|---|
| 25 | 3.2 |
| 15 | 6 |
| 10 | 10 |
| 7 | 13 |
| 3 | 30 |
| 2 | 38 |
Self-venting
VA and VMSA Series
Performance
Required with chemicals that release gas (e.g. peroxides), to prevent the pump from becoming air-locked.
| Max pressure (bar) | Max flow rate (l/h) |
|---|---|
| 18 | 2 |
| 15 | 1 |
| 15 | 3 |
| 10 | 0.5 |
| 10 | 3.4 |
| 7 | 4 |
| 5 | 7.5 |
| 5 | 9 |
| 4 | 5.5 |
| 3 | 7 |
| 2 | 12 |
| 1 | 13 |
Self-venting
KA and KMSA Series
Performance
Required with chemicals that release gas (e.g. peroxides), to prevent the pump from becoming air-locked.
| Max pressure (bar) | Max flow rate (l/h) |
|---|---|
| 18 | 1 |
| 15 | 3 |
| 10 | 3.5 |
| 8 | 5.5 |
| 5 | 7.5 |
| 2 | 13 |
Self-venting
TA and TMSA Series
Performance
Required with chemicals that release gas (e.g. peroxides), to prevent the pump from becoming air-locked.
| Max pressure (bar) | Max flow rate (l/h) |
|---|---|
| 20 | 3.2 |
| 5 | 10 |
| 4 | 13 |
| 3 | 20 |
| 1 | 35 |
Self-venting
WAD
Performance
Required with chemicals that release gas (e.g. peroxides), to prevent the pump from becoming air-locked.
| Max pressure (bar) | Max flow rate (l/h) |
|---|---|
| 3 | 7 |
Choosing the pump
Tell us the product to be dosed, the flow rate and the back-pressure: we will recommend the most suitable pump and pump head.