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| Item | Venturi Style Pneumatic Air Blower |
|---|---|
| Air Consumed @ 100 Psig | 180 CFM |
| Air Consumed @ 60 Psig | 110 CFM |
| Air Consumed @ 80 Psig | 140 CFM |
| Air Flow Rate @ 100 Psig | 5435 CFM |
| Air Flow Rate @ 60 Psig | 4215 CFM |
| Air Flow Rate @ 80 Psig | 4810 CFM |
| Air Inlet Size | 1" |
| Air Inlet Type | NPT |
| Air Pressure | 60 psi, 80 psi, 100 psi |
| Base Dia. | 14.37" |
| Base Material | Cast Aluminum |
| Bolt Circle Dia. | 13.62" |
| Decibels @ 5 Ft. @ 100 Psig | 81 dBA |
| Decibels @ 5 Ft. @ 60 Psig | 77 dBA |
| Decibels @ 5 Ft. @ 80 Psig | 79 dBA |
| Dia. Top Of Horn | 14 1/4" |
| Duct Construction | Single Ply |
| Duct Design | Retractable, Non-Collapsible |
| Duct Finish | PVC Coated |
| Duct Material | Vinyl, Polyester |
|---|---|
| Free Air Induction @ 100 Psig | 30.19 |
| Free Air Induction @ 60 Psig | 38.32 |
| Free Air Induction @ 80 Psig | 34.36 |
| Handle Material | Plastic |
| Horn Finish | Galvanized |
| Horn Material | Steel |
| Includes | Base, Plastic Handle, Static Ground Connection |
| Inlet Size | 1" |
| Inlet Type | NPT |
| Max. Inlet Pressure | 140 psi |
| Max. Temp. | 180°F |
| Number Of Mounting Slot | 3 |
| Overall Length | 46.06" |
| Slot Dia. | 1/2" |
| Static Ground Connection Size | 6 ft. |
| Static Pressure @ 100 Psig | 6.2 in. wc |
| Static Pressure @ 60 Psig | 4 in. wc |
| Static Pressure @ 80 Psig | 5.2 in. wc |
| Total Air Flow @ 60 Psig | 2560 CFM |
| Height (cm) | 124.46 |
|---|---|
| Length (cm) | 45.72 |
| Width (cm) | 45.72 |
| HS Code | 8414901040 |
|---|---|
| Country Of Origin | US |
| Weight (kg) | 17.865 |
Allegro 9518-08 Venturi blower produces a large volume of air suction for extracting toxic or explosive gases and discharging them out through a large, galvanised exhaust cone. This pneumatic Venturi blower is ideal for creating positive pressure in a tank by using clean breathing air to provide a safe environment for the workers to enter the tank. It also eliminates accumulated welding fumes & smoke from shipyards, underground areas or manholes to prevent explosions. It is used to efficiently cool down workers & heavy equipment before maintenance & repair during extremely hot working conditions.
How does a Venturi air blower work?
These Venturi style pneumatic air blowers use small volumes of high velocity air to circulate through their base and run out through the casing and nozzle jets. This mechanism creates a Venturi effect to pull in air through one end and blast out through the horn shaped diffuser for moving large volumes of air containing gas / vapour, dust & particulate matter.
Allegro 9518-08 Venturi blower is attached to a standard / statically conductive duct that is manufactured in accordance with ASTM 227 standard for high tensile strength & durability.
The maximum working temperature that a standard ducting can withstand is 180 degrees F. Statically conductive ducting can handle temperatures up to 250 degrees F.
Several factors can affect the total output of a Venturi blower. The number of bends and length of ducting attached to a Venturi blower adversely affect its output. The biggest reduction in output occurs after the first addition of ducting or bends, thereafter the drop is much smaller.
Yes, using two Venturi blowers in the same space would increase the concentration of fresh air in the space, though the overall air exchange rate would not increase significantly.
Venturi blowers should be used for positive ventilation in confined spaces. They are also suitable for extracting fumes or toxic air that are generated in a specific location.
Yes, they can be installed vertically above tanks, manholes or other locations by supporting them with proper ingress & egress accessories. These blowers should also be weight, vibration & motion mitigated for secure operation.
Cubic Feet per Minute or CFM represents the amount of air that can be moved through a room when operating a blower / fan at the highest speed. In order to efficiently cool a room, the blower CFM should be chosen while considering the room space / size. CFM for blowers is a crucial measurement for determining if air can be circulated within the space quickly.
Venturi blowers or air movers are generally small in size and operate at very high speeds. They are designed for directing air at different angles with precision. However, axial fans are larger and are more suitable for ventilating larger rooms without considering precision.
Users can select a Venturi blower based on the compressor size required. It can be determined by checking the chart of air consumption at various inlet pressures. The 'air consumed' data indicates the amount of hazardous air / fumes that a Venturi blower can consume for degassing chemical tanks and similar industrial confined spaces. Another point to be noted while selecting a Venturi blower is the total volume of the space to be ventilated.
Venturi blowers are mainly designed for confined space ventilation of hazardous gases or vapours for routine maintenance and cleaning operations. These blowers are widely used in the petroleum processing, chemical and marine industries, as well as in power plants, refineries and shipyards.
Ducting for Venturi blowers is offered for both standard and statically conductive environments. Standard ducting is offered in 5 diameter variants (8, 12, 16, 20 and 26 inches) and statically conductive ducting is offered in 4 diameter variants (8, 12, 16 and 20 inches). The ducting is retractable and has a non-collapsible design for carrying large volumes of air.
Allegro 9518-08 Venturi blower uses compressed air or saturated steam, having a maximum inlet pressure of 140 psi supplied through an air source. A Venturi blower circulates air inside its casing for creating a Venturi effect & pulling in air through one end to blast it out through the horn-shaped diffuser.
Raptor Supplies delivers Venturi blowers in variants having extra small, small, medium and extra large base diameters. Both the total airflow & air consumed by the Venturi blower increase as the base diameter grows larger.
| Style | Model | Air Pressure | Air Flow Rate @ 60 Psig | Air Flow Rate @ 80 Psig | Air Flow Rate @ 100 Psig | Air Consumed @ 60 Psig | Air Consumed @ 80 Psig | Air Consumed @ 100 Psig | Horn Material | Price (ex. VAT) | Cart |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 9518-10 | 60 psi, 80 psi, 100 psi | 6180 CFM | 7305 CFM | 8220 CFM | 190 CFM | 250 CFM | 380 CFM | Steel | $1,402.75 | |
| A | 9518-03S | 60 psi, 80 psi, 100 psi | 865 CFM | 1080 CFM | 1250 CFM | 30 CFM | 40 CFM | 50 CFM | Steel | $400.30 | |
| A | 9518-03 | 60 psi, 80 psi, 100 psi | 1135 CFM | 1310 CFM | 1465 CFM | 30 CFM | 40 CFM | 50 CFM | Steel | $476.11 | |
| A | 9518-06 | 60 psi, 80 psi, 100 psi | 2560 CFM | 3020 CFM | 3700 CFM | 60 CFM | 80 CFM | 100 CFM | Steel | $836.65 |
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