Solenoid valve oxygen M7
- Brass housing, suitable for oxygen applications
- Can be used normally open or normally closed (polarity can be changed by turning the coil)
- 0,2 to 3 bar operating pressure
- Ideal for oxygen aeration systems in aquaculture
- No unwanted self-heating of the valve due to low power consumption
Smart Regulation of the oxygen concentration - with the Solenoid Valve M7.
Oxygen is one of the most important parameters in aquaculture - especially for sensitive species such as trout or salmon. With the M7 solenoid valve from SENECT, you can automate the oxygen supply to your system reliably and safely - even in the event of a power failure!
The M7 solenoid valve works perfectly with your SENECT control unit. If the oxygen level falls below a critical value, the valve opens automatically - oxygen or air flows into the water via ceramic diffusers. As soon as an optimum value (e.g. 100 % saturation) is reached, the aeration is automatically stopped.
The M7 solenoid valve works perfectly with your SENECT control unit. If the oxygen level falls below a critical value, the valve opens automatically - oxygen or air flows into the water via ceramic diffusers. As soon as an optimum value (e.g. 100 % saturation) is reached, the aeration is automatically stopped.
Reliable when it is most needed: The M7 is open without power - this means that it automatically releases oxygen in the event of a power failure. This means that your aeration remains active even if pumps or control systems fail.
Why should you aerate your tanks?
1. Better growth of the fish
Sufficient dissolved oxygen supports the animals' metabolism, which leads to better feed utilisation and faster growth.
2. Lower mortality rate
Oxygen deficiency is one of the most common causes of death in aquaculture. Good aeration drastically reduces the risk of fish mortality.
3. Reduction of stress
Fish react very sensitively to low oxygen levels - with higher stress levels, which makes them more susceptible to disease. Sufficient oxygen reduces this stress.
4. Improved water quality
Oxygen helps aerobic microorganisms to break down ammonium and other waste products. This contributes to the overall water quality.
5. Increase in stocking density
With a good oxygen supply, the density of the animals kept can be increased, which is economically advantageous.
6. Promotion of nitrification
The biological degradation process of nitrogen compounds (nitrification) requires oxygen - important for closed recirculation systems (RAS).
Why should you not aerate permanently?
As beneficial as a sufficient oxygen content in the water is - too much of a good thing can have negative consequences:
1. Gas bubble disease
Permanent oversaturation (>120 % oxygen saturation) can lead to so-called gas bubble disease. This causes gas bubbles to form in the blood and tissue of the fish - similar to diver's disease in humans.
2. Imbalance in the ecosystem
Permanent oxygen supersaturation can disrupt certain microorganisms and biological processes in the water.
3. Costs and energy expenditure
Excessive oxygenation requires additional technology and energy (e.g. ozonators or pure oxygen dosing), which increases operating costs - without necessarily providing any additional benefits.
4. Interference with the CO₂ release
Excessive oxygen levels can hinder the fish's ability to release excess CO₂ from the blood, which affects the pH value in the blood.
To summarise, oxygen is one of the most important parameters to regulate in aquaculture, especially when keeping salmonids with high oxygen requirements. The M7 solenoid valve fulfils an elementary task in an automated oxygen supply system.
The solenoid valve is supplied degreased and includes hose nozzles.
