Amphi-Vac™
Active vacuum protection
Active vacuum protection
for sensitive reservoirs
Amphi-Vac ™ is a patented product that is there to protect pressure-sensitive tanks and reservoirs from harmful negative pressures. Steel and fiberglass tanks as well as slim concrete structures are usually pressure sensitive. In the event of large negative pressures, such a tank risks collapsing. In case of doubt, consult Amphi-tech® for assessment or control calculation. We can also customize the product for special needs.
When the water level drops in a reservoir, air is sucked in to replace the drained volume. In normal cases, the air flow passes through an air filter, but if the filter becomes clogged, negative pressure arises in the reservoir. For this reason, all Amphi-Vent air filters are equipped with a mechanical pressure fuse that trips at 3500 Pa, which is adapted for most normal concrete constructions.
In the event of large negative pressures, a tank risks collapsing
Amphi-Vac ™ has an electronically controlled damper that opens automatically when the negative pressure in the reservoir reaches a preset value between 300 and 2400 Pa. The pressure in the reservoir is continuously monitored and compared with the ambient air pressure. To ensure the function and for increased service life, regular exercise of the damper is performed automatically.
Amphi-Vac™ active vacuum protection
- Protects reservoirs from harmful vacuum
- Continuous monitoring
- Fully automatic function
- Dual pressure sensors for increased safety
Patent number 1400297-6
| Technical data | Optional |
|---|---|
| Adjustable limit value for negative pressure in the range 300-2400 Pa | Outdoor adaptation of control unit, incl. stainless steel lockable cover, temperature sensor and frost guard |
| Dual pressure sensors for redundancy | Fastening device for mounting the control unit on pipes |
| Exercise of dampers in standard design | Cable between electronics unit and control unit (in addition to 5m) |
| Measurement value for ambient air pressure is corrected regularly | Data unit for logging print data |
| Three separate alarm indications with outputs: A: Harmful negative pressure or pressure sensor fault, B: Malfunction in damper, C: Low temperatur | |
| Spring-loaded damper that opens in the event of a power failure | |
| Separate control unit and electronics unit |
Do you have questions regarding drinking water and facilities?
Since 1998 Amphi-tech has been a trailblazing company in the field of inspection, maintenance, assessment and design of water reservoirs and other hydraulic facilities.
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694 60 Åsbro
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