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DELHI

DELHI is a manufacturer of belt-drive blowers and related air-moving equipment, with a product history that includes smoke ejectors used in firefighting and industrial ventilation. The brand's current catalog centers on unassembled belt-drive blowers supplied with drive packs, covering wheel diameters from 8 inches to 15 1/2 inches. These units are specified by airflow at a fixed static pressure of 0.250 inches of water column, with capacities ranging from 805 cfm to 3,465 cfm. Motor options include single-phase 115/230V AC and three-phase 230/460V AC, with open dripproof enclosures. Horsepower ratings span 1/6 hp to 1 hp. The blowers are shipped unassembled, which allows for inspection, belt tensioning, and alignment before installation. Typical applications include ducted HVAC systems, industrial ventilation, and general air movement where a specific cfm at a known static pressure is required. 3G Electric supplies the DELHI line as part of its industrial equipment catalog, offering more than 95 SKUs with published specifications and logistics support. The product data includes wheel size, motor voltage, phase, horsepower, enclosure type, and airflow at 0.250 in SP, allowing engineers and procurement specialists to match a blower to a system's requirements. Because the blowers are unassembled, buyers should account for assembly time and verify that the drive pack components are compatible with the intended installation. 3G Electric provides access to the full DELHI blower range, including models with 8-inch, 10 1/4-inch, 11 1/2-inch, 12 3/4-inch, and 15 1/2-inch wheels. Each listing includes the drive pack, motor, and wheel, and the airflow ratings are stated at a single static pressure point. For applications requiring different operating points, consult the manufacturer's performance curves. The blowers are not supplied with filters, housings, or controls unless explicitly listed. 3G Electric's role is to make these products available globally with accurate specifications and shipping coordination. The company does not manufacture or modify the blowers; it distributes them as catalog items. Buyers should confirm voltage, phase, and enclosure requirements against their site conditions. Open dripproof motors are intended for indoor use in relatively clean, dry environments; for washdown or outdoor installations, additional protection may be needed. The unassembled configuration means the wheel, housing, and drive components are shipped separately and must be assembled on site. This can reduce shipping volume and allow for belt replacement or tensioning before startup. However, it also requires mechanical aptitude and access to tools. 3G Electric's catalog includes the necessary drive packs and motors as part of each blower SKU, so buyers do not need to source these separately. The DELHI line is positioned for industrial and commercial air movement, not for hazardous-location or high-temperature applications unless specifically rated. No certifications or agency listings are implied by the product data provided. For detailed dimensional drawings, rotation, and discharge orientation, refer to the manufacturer's documentation. 3G Electric can assist with identifying the correct SKU based on cfm, static pressure, voltage, and phase. The company ships globally and provides logistics support for these items.

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About DELHI

DELHI is a manufacturer of belt-drive blowers and related air-moving equipment, with a product history that includes smoke ejectors used in firefighting and industrial ventilation. The brand's current catalog centers on unassembled belt-drive blowers supplied with drive packs, covering wheel diameters from 8 inches to 15 1/2 inches. These units are specified by airflow at a fixed static pressure of 0.250 inches of water column, with capacities ranging from 805 cfm to 3,465 cfm. Motor options include single-phase 115/230V AC and three-phase 230/460V AC, with open dripproof enclosures. Horsepower ratings span 1/6 hp to 1 hp. The blowers are shipped unassembled, which allows for inspection, belt tensioning, and alignment before installation. Typical applications include ducted HVAC systems, industrial ventilation, and general air movement where a specific cfm at a known static pressure is required. 3G Electric supplies the DELHI line as part of its industrial equipment catalog, offering more than 95 SKUs with published specifications and logistics support. The product data includes wheel size, motor voltage, phase, horsepower, enclosure type, and airflow at 0.250 in SP, allowing engineers and procurement specialists to match a blower to a system's requirements. Because the blowers are unassembled, buyers should account for assembly time and verify that the drive pack components are compatible with the intended installation. 3G Electric provides access to the full DELHI blower range, including models with 8-inch, 10 1/4-inch, 11 1/2-inch, 12 3/4-inch, and 15 1/2-inch wheels. Each listing includes the drive pack, motor, and wheel, and the airflow ratings are stated at a single static pressure point. For applications requiring different operating points, consult the manufacturer's performance curves. The blowers are not supplied with filters, housings, or controls unless explicitly listed. 3G Electric's role is to make these products available globally with accurate specifications and shipping coordination. The company does not manufacture or modify the blowers; it distributes them as catalog items. Buyers should confirm voltage, phase, and enclosure requirements against their site conditions. Open dripproof motors are intended for indoor use in relatively clean, dry environments; for washdown or outdoor installations, additional protection may be needed. The unassembled configuration means the wheel, housing, and drive components are shipped separately and must be assembled on site. This can reduce shipping volume and allow for belt replacement or tensioning before startup. However, it also requires mechanical aptitude and access to tools. 3G Electric's catalog includes the necessary drive packs and motors as part of each blower SKU, so buyers do not need to source these separately. The DELHI line is positioned for industrial and commercial air movement, not for hazardous-location or high-temperature applications unless specifically rated. No certifications or agency listings are implied by the product data provided. For detailed dimensional drawings, rotation, and discharge orientation, refer to the manufacturer's documentation. 3G Electric can assist with identifying the correct SKU based on cfm, static pressure, voltage, and phase. The company ships globally and provides logistics support for these items.

Common Applications

  • HVAC ducted systems — DELHI 7H750 belt-drive blower with 15 1/2-inch wheel and 3/4 hp three-phase motor for 3,465 cfm at 0.250 in SP.
  • Industrial ventilation — DELHI 7H748 belt-drive blower with 12 3/4-inch wheel and 1 hp three-phase motor for 2,800 cfm at 0.250 in SP.
  • General air movement — DELHI 7H711 belt-drive blower with 8-inch wheel and 1/6 hp single-phase motor for 805 cfm at 0.250 in SP.
  • Commercial exhaust — DELHI 7H725 belt-drive blower with 12 3/4-inch wheel and 3/4 hp single-phase motor for 2,640 cfm at 0.250 in SP.
  • Make-up air — DELHI 7H718 belt-drive blower with 10 1/4-inch wheel and 3/4 hp single-phase motor for 2,035 cfm at 0.250 in SP.
  • Ducted cooling — DELHI 7H743 belt-drive blower with 11 1/2-inch wheel and 1/2 hp three-phase motor for 2,045 cfm at 0.250 in SP.

Frequently asked questions

Common questions about DELHI from 3G Electric.

What is the airflow range of DELHI belt-drive blowers?

DELHI belt-drive blowers in the 3G Electric catalog deliver between 805 cfm and 3,465 cfm at 0.250 inches of static pressure. The smallest unit, SKU 7H711, has an 8-inch wheel and a 1/6 hp motor, rated at 805 cfm. The largest, SKU 7H750, has a 15 1/2-inch wheel and a 3/4 hp motor, rated at 3,465 cfm. Intermediate models cover 935 cfm, 2,035 cfm, 2,045 cfm, 2,235 cfm, 2,640 cfm, and 2,800 cfm. All ratings are at the same static pressure point, so direct comparison is possible. For operation at other static pressures, consult the manufacturer's performance curves.

Are DELHI blowers shipped assembled?

No. The DELHI belt-drive blowers listed by 3G Electric are supplied unassembled. Each SKU includes a drive pack, but the wheel, housing, and motor are shipped separately. Assembly is required on site. This allows the installer to verify belt tension and pulley alignment before startup. It also reduces shipping volume. Buyers should plan for assembly time and ensure that the mounting location can accommodate the individual components. The drive pack includes the belts, pulleys, and bearings needed for the specific blower model. No additional drive components are required unless specified otherwise.

What motor voltages and phases are available for DELHI blowers?

DELHI belt-drive blowers are available with single-phase 115/230V AC motors or three-phase 230/460V AC motors. Single-phase models include SKUs 7H711, 7H712, 7H718, 7H724, and 7H725. Three-phase models include SKUs 7H743, 7H748, and 7H750. All motors have open dripproof enclosures. Horsepower ranges from 1/6 hp to 1 hp. The voltage and phase must match the available power supply at the installation site. Three-phase motors are typically used in industrial settings where three-phase power is available. Single-phase motors are common in smaller commercial or residential applications. Verify the motor nameplate against your electrical service before ordering.

What is the static pressure rating for DELHI blowers?

The DELHI belt-drive blowers in the 3G Electric catalog are rated at 0.250 inches of static pressure (in SP). This is the point at which the published cfm values are measured. It is a single operating point, not a maximum. The blowers can operate at other static pressures, but airflow will change according to the fan curve. For system design, obtain the full performance curve from the manufacturer. The 0.250 in SP rating allows for comparison between models in the DELHI line. It does not indicate the maximum static pressure the blower can withstand. Ductwork, filters, and other system components will affect the actual operating point.

What wheel sizes are available for DELHI belt-drive blowers?

DELHI belt-drive blowers are available with wheel diameters of 8 inches, 10 1/4 inches, 11 1/2 inches, 12 3/4 inches, and 15 1/2 inches. The 8-inch wheel models are SKUs 7H711 and 7H712. The 10 1/4-inch wheel model is SKU 7H718. The 11 1/2-inch wheel model is SKU 7H743. The 12 3/4-inch wheel models are SKUs 7H724, 7H725, and 7H748. The 15 1/2-inch wheel model is SKU 7H750. Wheel size generally correlates with airflow capacity, but motor horsepower and speed also affect performance. The wheel is part of the unassembled blower and must be installed on the shaft during assembly.

Can DELHI blowers be used for smoke ejection?

DELHI has historically manufactured smoke ejectors, which are portable blowers used by fire departments to remove smoke from buildings. The current 3G Electric catalog focuses on belt-drive blowers for HVAC and industrial ventilation. These blowers are not specifically marketed as smoke ejectors, but they can move air in similar applications if the required cfm and static pressure match the system. However, smoke ejection often requires high airflow at low static pressure and may involve exposure to heat and debris. The standard open dripproof motors are not rated for high-temperature or contaminated air streams. For smoke ejection, verify that the blower's construction and motor enclosure are suitable for the intended environment.