MOYNO Progressive Cavity Pump 3913330100 50

( Brand: Moyno ), ( Manufacturer Part Number: 33301 ), ( Battery Included: No ), ( Housing Material: Cast Iron ), ( Max. Rpm: 1750 ), ( Item: Progressive Cavity Pump ), ( Series: 300 ), ( Inlet/outlet: In. , 3/4 Npt ), ( Seal Material: Carbon, Ceramic, Nitrile ), ( Application: Drum Transfer, Industrial Waste, Sewage Sampling, Irrigation, Lub ), ( Max. Pressure: Psi )

Review MOYNO Progressive Cavity Pump 50 Psi

The **Moyno 33301 (Model 3913330100) Progressive Cavity Pump** is a high-performance, versatile industrial pump designed for reliable and efficient fluid transfer in demanding applications. Part of Moyno s renowned line of progressive cavity pumps, this model combines robust engineering with advanced sealing technology to deliver exceptional performance across a wide range of industries, including wastewater treatment, chemical processing, mining, and food & beverage production. Engineered with a **3-inch (76.2 mm) bore diameter**, the 33301 pump features a **single-screw rotor and helical stator assembly**, creating a positive displacement mechanism that ensures consistent flow rates regardless of viscosity, solids content, or pressure fluctuations. This design eliminates the need for valves or pulsations, making it ideal for handling abrasive slurries, thick pastes, and shear-sensitive materials without compromising efficiency or pump life.

The **3913330100** variant is specifically optimized for applications requiring **50 horsepower (HP)**, providing ample power to manage high-viscosity fluids, such as heavy oils, polymer solutions, or even fibrous suspensions, while maintaining smooth, non-pulsating flow. Its **hydraulically balanced rotor** minimizes axial thrust, reducing wear on bearings and seals, which extends operational longevity and lowers maintenance costs. The pump s **mechanical seal assembly** is engineered for durability, featuring a robust cartridge-style design that simplifies servicing and ensures leak-free operation even under harsh conditions. Additionally, the **cast iron housing** and **stainless steel wetted components** offer superior corrosion resistance, making it suitable for aggressive chemicals, acids, and alkaline solutions.

One of the standout features of the Moyno 33301 is its **adjustable discharge head**, which allows for precise control over flow rates and pressure, accommodating a broad spectrum of system requirements. Whether used in **wastewater lift stations**, **sludge transfer systems**, or **chemical injection applications**, this pump delivers consistent performance with minimal energy consumption. Its **self-priming capability** further enhances versatility, enabling it to handle low-level fluid sources without the need for additional priming equipment. The pump s **compact yet sturdy construction** also makes it well-suited for retrofitting into existing systems where space is limited, while its **modular design** allows for easy upgrades or modifications to meet evolving operational demands.

For industries prioritizing reliability and efficiency, the Moyno 33301 (3913330100) progressive cavity pump stands as a proven solution, offering unmatched durability, low maintenance, and the ability to handle the most challenging fluids with ease. Whether managing abrasive slurries, high-viscosity liquids, or shear-sensitive materials, this pump ensures smooth, pulsation-free transfer while minimizing operational downtime and maximizing productivity. Backed by Moyno s reputation for innovation and engineering excellence, it remains a trusted choice for engineers and operators seeking a pump that delivers performance when it matters most.

### **Pros and Cons of buying a Moyno 33301/3913330100 Progressive Cavity Pump (50 HP)**

1. **High Efficiency and Reliability** Progressive cavity pumps (PCPs) like the Moyno are known for their ability to handle a wide range of slurries, pastes, and viscous fluids with minimal wear. The 33301/3913330100 model is designed for heavy-duty applications, ensuring consistent performance over time.

2. **Versatile Fluid Handling** This pump can manage abrasive, corrosive, and non-abrasive fluids, making it suitable for industries such as mining, wastewater treatment, chemical processing, and food production. Its progressive cavity design prevents pulverization of solids, which is ideal for sensitive materials.

3. **Low Shear Operation** Unlike centrifugal pumps, PCPs maintain gentle fluid movement, reducing degradation of sensitive products like polymers, biological materials, or foodstuffs.

4. **Sealless Design (Optional)** The Moyno can be configured with a magnetically coupled or dry gas seal option, reducing leakage risks and maintenance needs compared to traditional mechanical seals.

5. **Durable Construction** Built with high-quality materials, including stainless steel and elastomeric components, this pump is designed for long service life in harsh environments.

6. **Easy Maintenance** The modular design allows for straightforward disassembly and component replacement, minimizing downtime.

7. **Wide Range of Applications** Suitable for both liquid and slurry applications, including thick, viscous, or fibrous materials that would clog other pump types.

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1. **Higher Initial Cost** Progressive cavity pumps are generally more expensive upfront than centrifugal or positive displacement pumps (e.g., piston or diaphragm pumps) due to their specialized design and materials.

2. **Limited Flow Rates at High Pressures** While effective for viscous fluids, PCPs may not be as efficient as centrifugal pumps for high-volume, low-viscosity applications. The 50 HP model may struggle with very high-pressure requirements compared to other pump types.

3. **Sensitivity to Solids Size** Although they handle solids better than centrifugal pumps, extremely large or sharp particles can still cause wear on the rotor and stator, requiring more frequent inspections.

4. **Higher Power Consumption for Thin Fluids** PCPs are less efficient for low-viscosity fluids, which can lead to higher energy costs in applications where a centrifugal pump might be more suitable.

5. **Specialized Maintenance Requirements** Operators may need training to properly maintain the pump, including rotor-stator alignment and elastomer replacement, which adds to operational costs.

6. **Limited Availability of Spare Parts** Depending on the region, finding OEM or compatible spare parts for Moyno pumps may be more challenging than for more common pump brands.

7. **Noise and Vibration** Some PCPs can generate more noise and vibration than centrifugal pumps, which may require additional soundproofing or vibration dampening in sensitive environments.

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The **Moyno 33301/3913330100 progressive cavity pump (50 HP)** is an excellent choice for applications requiring the handling of viscous, abrasive, or sensitive fluids where reliability and low shear are critical. Its durability, versatility, and ability to manage solids make it ideal for industries like mining, wastewater treatment, and chemical processing. However, its higher cost, inefficiency with thin fluids, and specialized maintenance needs must be carefully considered before purchase.

If your application involves **high-viscosity slurries, sensitive materials, or abrasive fluids**, this pump is a strong recommendation. If your needs involve **high-volume, low-viscosity liquids or extreme pressure requirements**, a different pump type (e.g., centrifugal or screw pump) may be more cost-effective.

- **Buy if:** You need a robust, low-shear pump for viscous or abrasive fluids in industries like mining, wastewater, or chemical processing, and you can justify the higher initial cost with long-term reliability.

- **Consider alternatives if:** Your application involves thin fluids, high flow rates at low pressure, or extreme pressure requirements where a centrifugal or positive displacement pump would be more efficient.

- **Verify compatibility:** Ensure the pump s specifications (flow rate, pressure, and material compatibility) align with your exact application before purchasing. Consulting with a Moyno distributor or pump specialist can help optimize the selection.

Details:

I payed over $900.00 for it. My little experiment was a flop. It has been setting on my shelf too long. Item 445 I do not need this anymore.

part #: 33301 prices

• $361.99-$1161.99

specifications valvplu:

• brand: Moyno
• mpn: 33301
• battery included: No
• housing material: Cast Iron
• max. rpm: 1750
• item: Progressive Cavity Pump
• series: 300
• inlet/outlet: In. , 3/4 Npt
• seal material: Carbon, Ceramic, Nitrile
• application: Drum Transfer, Industrial Waste, Sewage Sampling, Irrigation, Lub
• max. pressure: Psi

returns valvplu:

• policy: No Returns

seller valvplu:

• # reviews: 417
• city: Liberty Hill, Texas
• rating: 100.0%

shipping valvplu:

• service: FedEx Ground Economy
• type: Calculated
• transit: 4-10 Days
• carrier: FedEx
• cost: $0.00
• class: Economy

general valvplu:

• condition: Used
• Pumps Pump Accessories > Vacuum Pumps > Progressive Cavity Pumps

payments valvplu:

• wallet: Apple-pay
• other
• credit card: Visa

offer valvplu:

• best offers: True
• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: April 21, 2026
• quantity: 1

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