SPENCER VB-004BZ-002 Regenerative Blower 75CFM 3/4HP 42IN-H2O 575V-AC 3PH

( Brand: Spencer ), ( Manufacturer Part Number: VB-004BZ-002 ), ( Part Type: Blower ), ( Flow Rate: 75 Cfm ), ( Power: 3/4 Hp ), ( Pressure: 42 In-h2o ), ( Vacuum: 39 In-h2o ), ( Voltage: Ac ), ( Phase: 3ph ), ( Reference Sku: 1754750 ), ( Product Condition: Used Excellent )

Review SPENCER Regenerative Blower 75cfm 3/4hp 575v-ac 3ph

The **Spencer VB-004BZ-002 Regenerative Blower** is a high-performance, industrial-grade air-moving solution engineered for demanding applications where precision airflow, energy efficiency, and durability are paramount. Designed with a robust **75 CFM (cubic feet per minute) airflow capacity**, this blower delivers consistent and reliable ventilation, making it an ideal choice for HVAC systems, dust collection, fume extraction, and other industrial processes requiring controlled air movement. Its **3/4 horsepower motor** ensures sufficient power to handle medium to heavy-duty tasks while maintaining operational efficiency, reducing energy consumption compared to traditional centrifugal or axial blowers. The motor operates at **575V AC, 3-phase**, providing a balance of performance and compatibility with standard industrial electrical systems, though it may require a dedicated circuit for optimal operation.

One of the standout features of the VB-004BZ-002 is its **regenerative design**, which enhances airflow efficiency by recirculating energy within the blower s impeller system. This innovative approach not only improves overall performance but also minimizes power draw, contributing to lower operational costs over time. The blower achieves a **42-inch water gauge (42 in-H O) static pressure rating**, allowing it to effectively move air through ductwork, filters, or other resistive systems without sacrificing performance. This makes it well-suited for applications where maintaining positive pressure or overcoming slight resistance is critical, such as in cleanrooms, laboratory ventilation, or process exhaust systems.

Constructed with **industrial-grade materials**, the VB-004BZ-002 is built to withstand harsh environments, including exposure to dust, moisture, and temperature fluctuations. Its **stainless steel or heavy-duty coated components** (depending on the specific model variant) resist corrosion and wear, ensuring longevity and reducing maintenance requirements. The blower s compact yet sturdy design allows for easy integration into existing systems, with standard mounting flanges and duct connections facilitating straightforward installation. Additionally, its **low-noise operation** minimizes disruption in sensitive environments, making it a versatile option for both industrial and semi-clean applications.

For applications requiring precise airflow control, the VB-004BZ-002 can be paired with variable frequency drives (VFDs) to adjust speed and output dynamically, further enhancing its adaptability. Its **plug-and-play compatibility** with standard electrical setups and minimal maintenance needs make it a cost-effective solution for businesses seeking reliable, long-term performance without the complexity of high-maintenance equipment. Whether used in manufacturing, research facilities, or commercial ventilation systems, this regenerative blower delivers a dependable balance of power, efficiency, and durability, ensuring optimal air movement for years to come.

### **Pros and Cons of buying a Spencer VB-004BZ-002 Regenerative Blower (75 CFM, 3/4 HP, 42 in-H O, 575V AC, 3-Phase)**

#### **Pros**

1. **High Airflow and Pressure Capacity** The 75 CFM (cubic feet per minute) and 42 in-H O (water column) pressure rating make this blower suitable for demanding applications, such as industrial ventilation, dust collection, or large-scale exhaust systems. This ensures efficient air movement even in high-resistance environments.

2. **Regenerative Design for Energy Efficiency** Regenerative blowers recover some of the energy from the exhaust stream, converting it back into useful energy to drive the blower. This improves efficiency compared to traditional centrifugal or axial blowers, potentially reducing operational costs over time.

3. **Durable Construction** Spencer is a well-known manufacturer of industrial blowers, known for building robust, long-lasting equipment. The 3/4 HP motor and sturdy housing suggest it is built for heavy-duty use, reducing the likelihood of frequent breakdowns.

4. **Three-Phase Power Compatibility** The 575V AC, 3-phase specification means this blower is designed for industrial or commercial settings where three-phase power is standard. This makes it a reliable choice for facilities with existing 3-phase electrical infrastructure.

- **Ventilation systems** (e.g., fume extraction, smoke removal)

- **Dust collection** (e.g., woodworking shops, manufacturing plants)

- **HVAC systems** (supply or exhaust air movement)

- **Process exhaust** (e.g., chemical plants, food processing)

6. **Quiet Operation (Relative to Some Alternatives)** Regenerative blowers are generally quieter than positive displacement blowers (e.g., Roots blowers) at similar airflow rates, making them a better fit for applications where noise reduction is important.

7. **Low Maintenance Requirements** Compared to some other types of industrial blowers, regenerative blowers typically have fewer moving parts that wear out quickly, leading to lower maintenance costs.

---

#### **Cons**

1. **High Voltage Requirement (575V AC, 3-Phase)** This blower is not suitable for standard residential or small commercial setups that may only have single-phase (120V or 240V) power. Facilities without 3-phase power will need additional equipment (e.g., a variable frequency drive or a step-down transformer) to operate it, adding complexity and cost.

2. **Higher Upfront Cost** Industrial-grade regenerative blowers are generally more expensive than smaller or less efficient models. The initial purchase price may be prohibitive for small businesses or startups with limited budgets.

3. **Specialized Installation Needs** Due to its size, weight, and electrical requirements, installing this blower may require professional assistance. Proper ductwork sizing, electrical wiring, and mounting are critical to ensure optimal performance and safety.

4. **Limited Availability of Parts and Service** While Spencer is a reputable brand, finding authorized service centers or replacement parts for specialized industrial equipment can be challenging, especially in remote areas. This may lead to longer downtimes if repairs are needed.

5. **Noise Considerations in Sensitive Environments** Although regenerative blowers are quieter than some alternatives, they may still produce noticeable noise levels (typically 70 85 dB, depending on application). In noise-sensitive areas (e.g., offices, residential buildings), additional soundproofing measures may be required.

6. **Energy Consumption** While regenerative blowers are more efficient than traditional centrifugal blowers, they still consume significant power. In facilities with high electricity costs, the operational expenses may outweigh the savings from efficiency gains.

7. **Potential for Overkill in Smaller Applications** If the blower is significantly larger than needed for a specific task (e.g., a small workshop), the excess capacity may lead to unnecessary energy use and higher costs without providing additional benefits.

---

### **Conclusion**

The **Spencer VB-004BZ-002 regenerative blower** is a high-performance, energy-efficient solution for industrial ventilation, dust collection, or exhaust applications where 3-phase power is available. Its regenerative design, durability, and strong airflow/pressure capabilities make it ideal for demanding environments. However, its high voltage requirement, elevated cost, and specialized installation needs may limit its suitability for smaller operations or settings without adequate electrical infrastructure.

### **Recommendation**

- You operate in an industrial or commercial setting with **3-phase power (575V AC)**.

- Your application requires **high airflow (75 CFM) and pressure (42 in-H O)** for ventilation, dust collection, or exhaust.

- You prioritize **energy efficiency and long-term durability** over initial cost.

- You have the **budget and infrastructure** to support a high-capacity industrial blower.

- Your facility lacks **3-phase power**, as this blower cannot be safely or efficiently operated on single-phase systems without additional equipment.

- Your application is **small-scale** (e.g., a home workshop or small office), where a smaller, lower-voltage blower would suffice.

- You are **cost-sensitive** and cannot justify the upfront investment for occasional use.

- You lack **expertise in industrial HVAC or electrical systems**, as improper installation could lead to inefficiency or safety hazards.

- **Single-phase centrifugal blowers** (e.g., 1/2 HP to 1 HP models).

- **Roots blowers** (for high-volume, low-pressure applications).

- **Variable frequency drive (VFD)-compatible blowers** if adjustable speed is required.

If the Spencer VB-004BZ-002 fits your requirements, it is a **strong, reliable choice** for industrial air movement needs. Otherwise, evaluate whether a smaller or differently configured blower would better meet your needs.

Details:

Valve Bodies and Manifolds.

part #: vb004bz002 prices

• $283.90-$489.80

specifications fablowehva:

• brand: Spencer
• mpn: Vb-004bz-002
• part type: Blower
• flow rate: 75 Cfm
• power: 3/4 Hp
• pressure: 42 In-h2o
• vacuum: 39 In-h2o
• voltage: Ac
• phase: 3ph
• reference sku: 1754750
• product condition: Used Excellent

general fablowehva:

• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Fans Blowers
• condition: Used

seller fablowehva:

• city: Delta, Ohio
• rating: 100.0%
• # reviews: 125846

shipping fablowehva:

• transit: 5-5 Days
• service: Standard, Expedited, Overnight
• class: Standard, Expedited, One-day
• cost: $0.00
• type: Fixed

returns fablowehva:

• policy: Returns Accepted
• time: 30 Days
• method: Money back
• paid by: Seller

payments fablowehva:

• wallet: Google-pay
• other
• credit card: Diners-club

offer fablowehva:

• started: March 23, 2026
• availability: In Stock
• options: Ship-to-home
• best offers: True
• sold: 0
• quantity: 1

Spencer VB-004BZ-002 Is Similar To:

• 1010-ss-15 Spencer Rx-4179 Blower 15 (33% similar) 7 inlet press Pisa 15 hp, 3 ph, 60 Hz, 3510 rpm, 460 volt, 19. Spencer 1010-SS 15 blower. To determine shipping charges there is a ups ground calculator attached the listing that provides. EEC can provide shipping quotes to your destination EEC will work with the customer in trying to find most cost...(November 22nd, 2017)
• 1501-1-2 Spencer Hp Rpm Centrifugal Blower Fan Exhaust (39.4% similar) When picking up equipment, please to arrange a specific time and date. Top side ports: approx. Motor: manufacturer: Balder 2 hp voltage , currently wired for 480V 3 phase 60 Hz 3500 rpm sold as is, where is. Good used condition. Powers up and runs well...(August 23rd, 2018)
• 2003-mod Spencer Centrifugal Blower 5hp (41.1% similar) Unused model 2003 -MOD 5 hp volt 3 phase. Jeff I got these from a company that closed up, they were spares...(August 4th, 2017)
• 4 3007-h Mod Spencer Blower Hp Baldor Motor (32.8% similar) Please look at all picture. What you see in the pictures, is we send. They come here from factories that have been closed or other similar situations...(February 28th, 2019)
• 45gp280369 Spencer Usa Centrifugal Blower W Reliance P28g0369g 25hp Motor G1 Zu (38.2% similar) So please asap. The photos that are provided are of the actual item. If needing special shipping services please prior to purchasing buying on the item. Please at for approval. Item shipping weight 1210 lbs. We estimate shipping costs in order to keep shipping cost as minimal as possible...(September 19th, 2016)
• 4705870 Spencer Vortex Blower Model (38.9% similar) For rate quotes. Must ship to a commercial address with forklift. Items are sold as is. Surplus department, 2760 Goldsboro-cross keys rd...(August 25th, 2017)
• 5015-h Spencer Turbine Company 15hp Blower (33% similar) So please asap. We estimate shipping costs in order to keep shipping cost as minimal as possible. If needing special shipping services please prior to purchasing buying on the item. Item shipping weight 650 lbs. Please at for approval...(November 29th, 2016)
• 3500rpm 40hp Spencer M1230-ss B0402flg3bmhj01 Motor Toshiba Blower Blowers (34% similar) ...(June 28th, 2015)
• B0502flg35mhj01 Motor Blower Iii 50hp 3535rpm Blowers Fan Spencer Eqp 460v (25.9% similar) If needing special shipping services please prior to purchasing buying on the item. Please at for approval. Item shipping weight 910LBS. Most popular. So please asap. We estimate shipping costs in order to keep shipping cost as minimal as possible. The photos that are provided are of the actual item...(June 19th, 2015)
• M-1205-ss Spencer Centrifugal Blower (34.9% similar) Spencer M-1205-SS 6 centrifugal blower 5HP 3485RPM 230 460V 3PH this item is used, untested. Shipping costs are determined by the location of buyer and weight item sold. Do not forget about any other charges which are charged by the carrier. Item details: approx. For thousands of other industrial ...(June 6th, 2018)
• M241104b Spencer New Centrifugal Blower (35.7% similar) Part number M24104B1...(June 9th, 2017)