DA 40 roof inlet

Negative and equal pressure systems for the calves' barn and milking parlor

A fresh air inlet system is essential for proper air distribution and mixing in all livestock-occupied areas. When designed and installed correctly, inlets provide fresh air evenly throughout the room without causing drafts. SKOV-SECCO offers two different types of roof inlets; both can be used for either negative or equal pressure systems – the DA 40A and DA 60-820 roof inlets.

The DA 40 is a roof inlet used as an air intake or air supply unit in livestock houses, including dairy. The roof unit for the inlet is made of polyester-reinforced fiberglass for maximum weather resistance. The extension duct can be constructed using one of two material options: polypropylene or polyurethane foam. The air supply unit is fabricated from polyurethane foam to mitigate the risk of condensation. A small mixing fan for placement in the nozzle head is also supplied, ensuring an optimum induction of the fresh air by which the draft is avoided. If DA 40A is used as an air intake unit in negative pressure systems, the maximum performance is 4,500 m³/h.

If the air supply fan is installed, the performance is 8,700-9,800 m³/h, depending on the type of fan and house geometry. The air mixer ensures that cold incoming air is mixed and carried by warm air inside the barn. The air intake unit has a swivel shutter to correct the incoming air volume and optimum system pressure adjustment.

Features and benefits:

• Uniform distribution and climate – also in wide livestock houses.
• Not sensitive to the wind conditions outside.
• Equipped with a swivel shutter to ensure the precise incoming air volume and adjust optimum system pressure.
• No draughts in the area occupied by the livestock.
• Includes two air baffle plates when step-less fans are installed.
• Equipped with tilting fittings which ensure easy cleaning, inspection, and servicing.

Accessories:

• Recirculation fan

See the performance data below: