GAST 87R647-V45-N470X Rocking Piston Twin Oil Pump

( Brand: Gast ), ( Manufacturer Part Number: 87R647-V45-N470X ), ( Part Type: Oil Piston Pump ), ( Piston Pump Type: Twin Piston Pump ), ( Country Of Origin: China )

Review GAST Rocking Piston Twin Oil less Pump

The **GAST 87R647-V45-N470X Rocking Piston Twin Oil-Less Pump** is a high-performance, maintenance-free air displacement solution engineered for demanding industrial, commercial, and specialized applications where reliability, efficiency, and durability are paramount. This advanced twin-piston pump operates on a proven rocking piston design, delivering consistent and pulsation-free airflow with minimal noise and vibration, making it ideal for environments where precision and quiet operation are critical. Constructed from robust materials, including a high-grade aluminum housing and corrosion-resistant components, the pump is built to withstand harsh conditions, including exposure to moisture, dust, and temperature fluctuations, ensuring long-term operational integrity. The oil-less design eliminates the need for lubrication, reducing maintenance requirements while also preventing contamination risks associated with traditional oil-lubricated systems. With a compact yet sturdy frame, this pump is designed for easy installation and integration into existing systems, whether in manufacturing plants, laboratories, or specialized equipment setups. Its twin-piston architecture provides balanced airflow, minimizing wear and tear on connected components, while the sealed internal mechanism ensures leak-free performance even under high-pressure conditions. Whether used for pneumatic conveying, vacuum applications, or as part of a larger air handling system, the GAST 87R647-V45-N470X delivers exceptional airflow rates of up to 470 liters per minute (16.6 CFM) at a maximum vacuum of 647 millibars (24.2 inches Hg), making it a versatile choice for a wide range of technical and industrial needs. Built to meet stringent quality standards, this pump combines innovation with rugged engineering, offering a dependable solution for applications where performance and reliability cannot be compromised.

The Gast 87R647-V45-N470X is an oil-less twin piston vacuum pump designed for laboratory and industrial applications. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Oil-Free Operation**

The pump eliminates the need for oil maintenance, reducing contamination risks in sensitive applications like vacuum systems, freeze-drying, or chemical processing. This also simplifies upkeep and lowers long-term costs associated with oil changes, filters, and disposal.

2. **High Efficiency and Performance**

Twin piston designs typically offer better suction performance and stability compared to single-stage pumps. This model is capable of achieving low vacuum levels (down to approximately 10 -3 mbar or better, depending on configuration), making it suitable for applications requiring precise control, such as vacuum filtration, degassing, or sample preparation.

3. **Durability and Longevity**

Gast pumps are known for their robust construction, often featuring corrosion-resistant materials (e.g., stainless steel components) and reinforced seals. The oil-less design reduces wear from oil degradation, potentially extending the pump s operational lifespan.

4. **Low Operating Costs**

Without oil, there are no costs associated with oil consumption, filtration, or disposal. Energy efficiency is also generally higher than oil-sealed pumps, as there s no need to heat or cool oil to maintain viscosity.

5. **Clean Output**

Ideal for applications where contamination (e.g., particulate or vapor) must be avoided. This is critical in pharmaceutical, food processing, or semiconductor industries where purity is paramount.

6. **Quiet Operation**

Oil-less pumps often produce less noise compared to oil-sealed counterparts, which can be advantageous in laboratory or cleanroom environments.

7. **Easy Maintenance**

Lack of oil means fewer maintenance tasks (e.g., no oil changes, fewer leaks to address). Cleaning and servicing typically involve simpler procedures, such as replacing worn seals or checking for debris.

8. **Versatility**

Suitable for a wide range of applications, including vacuum drying, freeze-drying, vacuum distillation, and laboratory instrumentation. The N470X series is often used in conjunction with other Gast components (e.g., controllers, valves) for customized setups.

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### **Cons**

1. **Higher Initial Cost**

Oil-less pumps are generally more expensive upfront than oil-sealed alternatives. The cost reflects the advanced engineering required for oil-free operation, such as specialized seals, materials, and precision machining.

2. **Limited Compatibility with Certain Gases**

While oil-less pumps avoid oil contamination, they may struggle with certain gases that are highly corrosive or reactive (e.g., chlorine, ammonia, or sulfur compounds). The pump s materials (e.g., seals, pistons) may degrade over time if exposed to incompatible gases without proper filtration or pre-treatment.

3. **Potential for Higher Noise in Some Models**

Although generally quieter than oil-sealed pumps, some twin piston designs can produce noticeable noise during operation, particularly at higher speeds or under heavy loads. This may not be an issue in industrial settings but could be a consideration for noise-sensitive environments.

4. **Sensitivity to Contaminants**

Oil-less pumps are not immune to particulate or vapor contamination. If the inlet air or process gases contain debris, moisture, or corrosive substances, the pump s seals, pistons, or valves may wear prematurely. Additional filtration (e.g., particulate filters, moisture traps) may be required, adding to the system cost.

5. **Lower Maximum Flow Rate Compared to Some Oil-Sealed Pumps**

Twin piston pumps typically have lower flow rates than larger oil-sealed rotary vane pumps. If high throughput is a priority, an oil-sealed pump or a multi-stage oil-less pump might be more suitable.

6. **Limited Availability of Replacement Parts**

Gast is a reputable brand, but replacement parts (e.g., seals, pistons) may not be as widely available as those for more common oil-sealed pumps. This could lead to longer downtimes if parts are not stocked locally.

7. **Potential for Higher Power Consumption**

Achieving low vacuum levels with oil-less pumps can require more energy than oil-sealed pumps, especially in applications where the pump operates continuously at high loads.

8. **Not Ideal for Extreme Vacuum Applications**

While this model can reach very low pressures, it may not be suitable for ultra-high vacuum (UHV) applications (e.g., below 10 -6 mbar), which typically require cryogenic pumps or diffusion pumps.

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### **Conclusion**

The Gast 87R647-V45-N470X is an excellent choice for applications where oil-free operation, cleanliness, and reliability are critical. Its twin piston design ensures stable and efficient vacuum performance, making it well-suited for laboratory, pharmaceutical, or industrial processes where contamination must be avoided. The pump s durability and low maintenance requirements further enhance its appeal for long-term use.

However, the higher upfront cost and potential limitations with certain gases or high-flow applications may make it less ideal for budget-conscious or high-throughput industrial settings. If the application involves corrosive gases or requires ultra-high vacuum levels, additional considerations (e.g., filtration, pre-treatment) or alternative pump technologies may be necessary.

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### **Recommendation**

- You require an oil-free pump for applications in pharmaceuticals, food processing, or cleanroom environments.

- Your priority is minimizing contamination and reducing maintenance (no oil changes, fewer leaks).

- You need a reliable, durable pump for moderate to high vacuum applications (down to 10 -3 mbar).

- Budget constraints allow for the higher initial investment, as long-term savings on oil and maintenance justify the cost.

- Your application demands ultra-high vacuum levels (below 10 -6 mbar), in which case a cryogenic or diffusion pump may be more appropriate.

- You require extremely high flow rates, as oil-sealed rotary vane pumps or larger multi-stage oil-less pumps might be more efficient.

- The process gases are highly corrosive or reactive, and you lack proper filtration or pre-treatment systems to protect the pump.

- Cost is a major constraint, and you can tolerate the trade-offs of an oil-sealed pump (e.g., higher maintenance, risk of contamination).

For most laboratory or industrial users prioritizing cleanliness and reliability, the Gast 87R647-V45-N470X is a strong recommendation. Pair it with appropriate filtration and monitoring systems to maximize its lifespan and performance.

Details:

Up for sale is a slightly Preowned GAST 87R647-V45-N470X Rocking Piston Twin Oil-less Pump. Please look at the pictures, 30 Day Warranty. In great working condition, used a few times and put away.

part #: 87r647v45n470x prices

• $109.99-$450.00

specifications valvplu:

• brand: Gast
• mpn: 87r647-v45-n470x
• part type: Oil Piston Pump
• piston pump type: Twin Piston Pump
• country of origin: China

returns valvplu:

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

payments valvplu:

• wallet: Google-pay
• other
• credit card: Mastercard

shipping valvplu:

• class: Standard, Expedited
• service: USPS Ground Advantage, USPS Priority Mail
• transit: 6-12 Days
• carrier: USPS
• type: Calculated
• cost: $63.76

general valvplu:

• Pumps Pump Accessories > Vacuum Pumps > Piston Pumps
• condition: Used

offer valvplu:

• sold: 0
• quantity: 1
• options: Ship-to-home
• started: February 12, 2026
• best offers: True
• availability: In Stock

seller valvplu:

• city: Apopka, Florida
• # reviews: 185
• rating: 100.0%

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