WEDGE-LOCK™ uses an ultra fine pore ceramic producing a high Absorption Efficiency (AE) allowing you to increase yield while controlling the cost of expensive gases
The Point Four WEDGE-LOCK is a modular system of microbubble diffusers and end sets that fit together to form a bank of up to eight units. Oxygenation capacity can be increased (or decreased) as your needs demand by simply changing the number of diffusers used for greater flexibility and minimal downtime.Designed for total ease of use, WEDGE-LOCK™ modules ‘Twist and Lock’ together to form an air-tight seal without the use of tools. Hose with push-in fittings connects the diffuser banks to the gas supply, significantly reducing set-up time and effort.Manufactured from tough plastic, WEDGE-LOCK™ will not corrode and is resistant to the Sun’s ultraviolet rays. The diffuser’s streamlined wedge shape improves stability in tanks with high water flow and offers less resistance in self-cleaning tank systems.
These aquaculture-duty diffusers are among the most efficient diffusers available, allowing you to increase yield while controlling the cost of expensive gases. Made from premium materials and subject to rigorous testing, Micro Bubble Diffusers provide the kind of performance and reliability our reputation is built on. Size below depicts base dimensions.
The original ... since 1988
These aquaculture-duty diffusers are among the most efficient diffusers available, allowing you to increase yield while controlling the cost of expensive gases. Made from premium materials and subject to rigorous testing, Micro Bubble Diffusers provide the kind of performance and reliability our reputation is built on.
Point Four diffusers use a specially developed, ultra fine pore ceramic plate that produces a cloud of extremely fine bubbles of approximately 100–500 microns; far superior to airstones, porous hose or membrane type designs. The flat plate design ensures uniform bubbles across the entire surface and minimizes bubble coalescence to achieve an absorption rate in excess of 80%, depending on depth and flowrate. Bubbling Pressure is 25 to 35 psi. (1.7 to 2.4 bar).
Applications for micro-bubble diffusers include pure gas applications (pure oxygen, carbon dioxide), high-density hauling, holding/growout tanks and emergency aeration.
Green drive technology – energy efficient motors low power consumption. Specially formulated diaphragm material for extended life. Due to no wearing parts no reduction in performance. Robust and compact construction – weatherproofEasy to service with competitively priced spares kit. Suited to intermittent or continuous duty applications. Whisper quiet operation as low as 35db ET40 Pump:
Product Type: Oil Free Air
Maximum Flow: 40 Litres Per Minute @ 0.12 bar
Power Consumption: 30 Watts
Weight: 4.3 kgs
Dimensions: 218mm Long x 156mm Wide x 182mm High
Connector Size: 14mm
Accessories Included: Screw in brass connector, L shaped elbow & 2 hose clips
Supply Voltage: 220v - 240v 50Hz
The Dryden Aqua Air Diffuser is a semi-flexible, high-efficiency fine bubble air diffuser available in 9 different lengths, depending on the air through-put required . It provides oxygen transfer rates of up to 5kg/kw, 10m3/h of air and 1 kg of O2/h. Its semi-flexible construction with its own internal ballast will stay on the bottom of tank or pond without the need to be anchored to the floor.
The Dryden Aqua Air Diffuser combines excellent performance with cost effectiveness for aeration, oxidation and biological treatment.
Dryden Aqua Air Diffuser Key Features
Semi-flexible, tubular construction
Self weighted
Available in 9 lengths from 0.3 – 3m.
Air handling capacity from 1 – 10m3/hr
Less than 0.2 Bar (3 psi) pressure differential
Oxygen transfer efficiency up to 5 kg/kwhr
Resistant to calcification
Easy to clean and maintain
Robust and long-lasting (typical lifespan is 5 – 10 yrs)
Built in non-return valve
Stainless steel and plastic construction
Can be used with Air, N2, CO2
Oxygen Transfer Performance
Surface aerators waste a huge amount of kinetic energy throwing the water into the air, transfer coefficient is 1 kg to 2 kg of oxygen per kW. Membrane diffusers are more efficient at 2 kg to 3 kg of oxygen per kW. The Dryden Aqua diffuser at over 5 kg is therefore the most efficient fine bubble diffuser available and is ideal for retrofit applications as a simple drop in product for tanks and ponds in Aquaculture and Waste Water Treatment.
These aquaculture-duty diffusers are among the most efficient diffusers available, allowing you to increase yield while controlling the cost of expensive gases. Made from premium materials and subject to rigorous testing, Micro Bubble Diffusers provide the kind of performance and reliability our reputation is built on. Size below depicts base dimensions.
The original ... since 1988
These aquaculture-duty diffusers are among the most efficient diffusers available, allowing you to increase yield while controlling the cost of expensive gases. Made from premium materials and subject to rigorous testing, Micro Bubble Diffusers provide the kind of performance and reliability our reputation is built on.
Point Four diffusers use a specially developed, ultra fine pore ceramic plate that produces a cloud of extremely fine bubbles of approximately 100–500 microns; far superior to airstones, porous hose or membrane type designs. The flat plate design ensures uniform bubbles across the entire surface and minimizes bubble coalescence to achieve an absorption rate in excess of 80%, depending on depth and flowrate. Bubbling Pressure is 25 to 35 psi. (1.7 to 2.4 bar).
Applications for micro-bubble diffusers include pure gas applications (pure oxygen, carbon dioxide), high-density hauling, holding/growout tanks and emergency aeration.
These aquaculture-duty diffusers are among the most efficient diffusers available, allowing you to increase yield while controlling the cost of expensive gases. Made from premium materials and subject to rigorous testing, Micro Bubble Diffusers provide the kind of performance and reliability our reputation is built on. Size below depicts base dimensions.
The original ... since 1988
These aquaculture-duty diffusers are among the most efficient diffusers available, allowing you to increase yield while controlling the cost of expensive gases. Made from premium materials and subject to rigorous testing, Micro Bubble Diffusers provide the kind of performance and reliability our reputation is built on.
Point Four diffusers use a specially developed, ultra fine pore ceramic plate that produces a cloud of extremely fine bubbles of approximately 100–500 microns; far superior to airstones, porous hose or membrane type designs. The flat plate design ensures uniform bubbles across the entire surface and minimizes bubble coalescence to achieve an absorption rate in excess of 80%, depending on depth and flowrate. Bubbling Pressure is 25 to 35 psi. (1.7 to 2.4 bar).
Applications for micro-bubble diffusers include pure gas applications (pure oxygen, carbon dioxide), high-density hauling, holding/growout tanks and emergency aeration.
Numerous aerator comparison tests show that paddle wheel aerators have the highest oxygen transfer per kWh. The easy-to-understand reason for this is that paddle wheel aerators create a directed flow and distribute the enriched water in the body of water. The renewed aeration of pond water that has just been aerated, as is unavoidable with some other types of aerators, is excluded. PWA paddle wheel aerators are in use in thousands of fish farms and shrimp farms around the world. In Europe, these devices are mostly used in fish farms and larger bodies of water (lakes, ponds).Advantages:- effective oxygen enrichment (O2)- degassing (CO2) with high fish stock- flow generation and distribution of the enriched water in the body of water- uncloggable- excellent price/performance ratio- maintenance and repair (if necessary) on site- very long service life (10 years of continuous operation and longer have been reported)Due to the intensive flow generation, these devices are only conditional suitable for small or medium-sized ponds. Even for the smallest devices with 0.49 kW (P2), the body of water should not be smaller than 500 m². If the water is too small or too shallow, there is a risk of embankments being flushed out and sludge being stirred up. The devices are only conditionally suitable for winter use.It is delivered as a kit with assembly instructions. Please note that devices with three-phase motors must be commissioned by a specialist. It is strongly recommended to only operate the device in connectionwith an appropriate motor protection. Please note that operating the device without a motor protection switch will void the motor warranty.
Numerous aerator comparison tests show that paddle wheel aerators have the highest oxygen transfer per kWh. The easy-to-understand reason for this is that paddle wheel aerators create a directed flow and distribute the enriched water in the body of water. The renewed aeration of pond water that has just been aerated, as is unavoidable with some other types of aerators, is excluded. PWA paddle wheel aerators are in use in thousands of fish farms and shrimp farms around the world. In Europe, these devices are mostly used in fish farms and larger bodies of water (lakes, ponds).Advantages:- effective oxygen enrichment (O2)- degassing (CO2) with high fish stock- flow generation and distribution of the enriched water in the body of water- uncloggable- excellent price/performance ratio- maintenance and repair (if necessary) on site- very long service life (10 years of continuous operation and longer have been reported)Due to the intensive flow generation, these devices are only conditional suitable for small or medium-sized ponds. Even for the smallest devices with 0.49 kW (P2), the body of water should not be smaller than 500 m². If the water is too small or too shallow, there is a risk of embankments being flushed out and sludge being stirred up. The devices are only conditionally suitable for winter use.It is delivered as a kit with assembly instructions. Please note that devices with three-phase motors must be commissioned by a specialist. It is strongly recommended to only operate the device in connectionwith an appropriate motor protection. Please note that operating the device without a motor protection switch will void the motor warranty.
The Enviro ET300 air pump helps to increase the amount of oxygen in the water. Providing a clean, oil-free air source it is exceptionally quiet in operation, as low as 35dB even when running continuously. The ET300 is easy to service with a competitively priced service kit and is also supported by our two year warranty. With its weatherproof, robust construction it makes an ideal wastewater pump.
Max Flow: 300 Litres per minute
Max Pressure: 0.20 bar
Weight: 18.0 kilograms
Dimensions (L x W x H): 348.5 x 230.5 x 219mm
Connector Size: 26mm
Power: 275W
The Dryden Aqua Air Diffuser is a semi-flexible, high-efficiency fine bubble air diffuser available in 9 different lengths, depending on the air through-put required . It provides oxygen transfer rates of up to 5kg/kw, 10m3/h of air and 1 kg of O2/h. Its semi-flexible construction with its own internal ballast will stay on the bottom of tank or pond without the need to be anchored to the floor.
The Dryden Aqua Air Diffuser combines excellent performance with cost effectiveness for aeration, oxidation and biological treatment.
Dryden Aqua Air Diffuser Key Features
Semi-flexible, tubular construction
Self weighted
Available in 9 lengths from 0.3 – 3m.
Air handling capacity from 1 – 10m3/hr
Less than 0.2 Bar (3 psi) pressure differential
Oxygen transfer efficiency up to 5 kg/kwhr
Resistant to calcification
Easy to clean and maintain
Robust and long-lasting (typical lifespan is 5 – 10 yrs)
Built in non-return valve
Stainless steel and plastic construction
Can be used with Air, N2, CO2
Oxygen Transfer Performance
Surface aerators waste a huge amount of kinetic energy throwing the water into the air, transfer coefficient is 1 kg to 2 kg of oxygen per kW. Membrane diffusers are more efficient at 2 kg to 3 kg of oxygen per kW. The Dryden Aqua diffuser at over 5 kg is therefore the most efficient fine bubble diffuser available and is ideal for retrofit applications as a simple drop in product for tanks and ponds in Aquaculture and Waste Water Treatment.
Numerous aerator comparison tests show that paddle wheel aerators have the highest oxygen transfer per kWh. The easy-to-understand reason for this is that paddle wheel aerators create a directed flow and distribute the enriched water in the body of water. The renewed aeration of pond water that has just been aerated, as is unavoidable with some other types of aerators, is excluded. PWA paddle wheel aerators are in use in thousands of fish farms and shrimp farms around the world. In Europe, these devices are mostly used in fish farms and larger bodies of water (lakes, ponds).Advantages:- effective oxygen enrichment (O2)- degassing (CO2) with high fish stock- flow generation and distribution of the enriched water in the body of water- uncloggable- excellent price/performance ratio- maintenance and repair (if necessary) on site- very long service life (10 years of continuous operation and longer have been reported)Due to the intensive flow generation, these devices are only conditional suitable for small or medium-sized ponds. Even for the smallest devices with 0.49 kW (P2), the body of water should not be smaller than 500 m². If the water is too small or too shallow, there is a risk of embankments being flushed out and sludge being stirred up. The devices are only conditionally suitable for winter use.It is delivered as a kit with assembly instructions. Please note that devices with three-phase motors must be commissioned by a specialist. It is strongly recommended to only operate the device in connectionwith an appropriate motor protection. Please note that operating the device without a motor protection switch will void the motor warranty.
Numerous aerator comparison tests show that paddle wheel aerators have the highest oxygen transfer per kWh. The easy-to-understand reason for this is that paddle wheel aerators create a directed flow and distribute the enriched water in the body of water. The renewed aeration of pond water that has just been aerated, as is unavoidable with some other types of aerators, is excluded. PWA paddle wheel aerators are in use in thousands of fish farms and shrimp farms around the world. In Europe, these devices are mostly used in fish farms and larger bodies of water (lakes, ponds).Advantages:- effective oxygen enrichment (O2)- degassing (CO2) with high fish stock- flow generation and distribution of the enriched water in the body of water- uncloggable- excellent price/performance ratio- maintenance and repair (if necessary) on site- very long service life (10 years of continuous operation and longer have been reported)Due to the intensive flow generation, these devices are only conditional suitable for small or medium-sized ponds. Even for the smallest devices with 0.49 kW (P2), the body of water should not be smaller than 500 m². If the water is too small or too shallow, there is a risk of embankments being flushed out and sludge being stirred up. The devices are only conditionally suitable for winter use.It is delivered as a kit with assembly instructions. Please note that devices with three-phase motors must be commissioned by a specialist. It is strongly recommended to only operate the device in connectionwith an appropriate motor protection. Please note that operating the device without a motor protection switch will void the motor warranty.
