Sereco - Model DRAF 200 -Fine Bubble Air Diffuser

Thanks to its special operation characteristics and the high strength of the materials of which is made, it is able to ensure a constant dissolution efficiency in the run of time. The DRAF 200 operation is based on the breathing effect of the elastic synthetic rubber membrane provided with microholes and able to open with an extreme softness and progression just at a minimum air pressure of about 250 mm of w.c.. The special design of the drilling system moreover allows the immediate closing of the microholes as soon as the air flow stops, due to the immediate effect of the back pressure on the membrane whose minimum value leads to a closing force of about 100 daN. That membrane operation system makes the DRAF 200 absolutely free from any possibility of clogging.

The DRAF 200 air diffuser consists of three components: a polystyrene shock-resistant diffuser body manufactured by vacuum injection molding, an EPDM synthetic rubber membrane obtained by vacuum injection molding, specifically punched, and a rilsan collar required to secure the membrane to the diffuser body. This type of diffuser is the result of careful researches and studies that have permitted to patent it.

The construction material and the finish degree of its surfaces can vary according to the use of the equipment. The DRAF 200 type is used when it is necessary to supply atmospheric oxygen into a liquid body with high transfer efficiency.

Strenghts

• GEOMETRY AND ASSEMBLING SYSTEM PATENTED.
• HIGH OXYGEN TRANSFER RATE DELIVERED WITH FINE BUBBLE.
• MINIMUM HEAD LOSS AT THE SUPPLY RAMPS.
• HOMOGENEOUS DISTRIBUTION THROUGH ALL THE MICRO-HOLES.
• PERFECT CLOGGING-PROOF OF THE MEMBRANE.
• PERFECT TIGHTNESS AGAINST THE WATER INLET INTO THE DIFFUSER.
• CONSTRUCTIONAL MATERIALS RESISTANT TO ATMOSPHERIC AGENTS.
• MINIMUM INVESTMENT AND MAINTENANCE COSTS.

Recommended accessories

• EASY 34.
• BLOWERS FOR AIR SUPPLY.