ARO PD05R-ASS-STT-B Double Diaphragm Steel Air Pump Ptfe

( Brand: Aro ), ( Manufacturer Part Number: PD05R-ASS-STT-B ), ( Battery Included: No ), ( Weight: 17.3000 ), ( Depth: 11.700 ), ( Type: Positive Displacement Pumps Diaphragm Pumps ), ( Length: 14.000 ), ( Features: Double Diaphragm Pump ), ( Air Consumption: Maximum 20 Scfm, Air Int ), ( Country Of Origin: Us ), ( Body Material: Stainless Steel ), ( Inlet Diameter: 1/2 In ), ( Diaphragm Pump Type: Single Diaphragm Pump )

Review ARO Double Diaphragm Pump Stainless Steel Air Operated Ptfe

The **ARO PD05R-ASS-STT-B Double Diaphragm Pump with Steel Air Chamber and PTFE Diaphragms** is a robust, high-performance metering pump designed for demanding industrial applications where reliability, precision, and chemical resistance are paramount. Engineered with a compact yet durable construction, this pump excels in transferring, dosing, and metering a wide range of corrosive, abrasive, and viscous fluids including acids, solvents, slurries, and aggressive chemicals without compromising on efficiency or longevity. The **steel air chamber** provides exceptional strength and resistance to pressure fluctuations, ensuring stable operation even under high suction or discharge pressures, while its reinforced design minimizes the risk of deformation or failure over extended use. Complementing this is the **PTFE (polytetrafluoroethylene) diaphragm**, a material renowned for its superior chemical inertness, non-stick properties, and resistance to temperature extremes, making it ideal for handling highly corrosive substances like hydrofluoric acid, sulfuric acid, or caustic alkalis. The dual-diaphragm configuration further enhances reliability by allowing one diaphragm to remain in service while the other undergoes maintenance or replacement, drastically reducing downtime and operational interruptions.

This pump is equipped with a **self-priming mechanism**, enabling it to draw fluids from low-pressure sources or even submerged applications without external priming, which simplifies setup and improves versatility in various industrial processes. The **stainless steel construction** of the air chamber and critical components ensures resistance to corrosion from aggressive media, extending the pump s service life in harsh environments. Additionally, the **adjustable stroke length** allows for precise flow rate control, accommodating a broad range of metering requirements from micro-dosing to high-volume transfer applications. The pump s **sealed bearing assembly** and **O-ring sealed shaft** prevent fluid leakage while maintaining smooth operation, and its **quick-connect fittings** facilitate easy installation and disassembly for maintenance or fluid changes. Whether integrated into chemical processing, water treatment, pharmaceutical manufacturing, or food and beverage production, the **ARO PD05R-ASS-STT-B** delivers consistent, contamination-free performance with minimal maintenance demands, making it a trusted choice for engineers and operators seeking durability and precision in fluid handling systems.

### **Pros and Cons of buying a ARO PD05R-ASS-STT-B (Double Diaphragm Pump with Steel Air PTFE)**

1. **Durability and Material Quality** The pump features a **steel air chamber**, which is more robust and resistant to wear compared to plastic or aluminum alternatives. This makes it suitable for heavy-duty applications where longevity is critical.

2. **PTFE (Teflon) Diaphragms** The use of **PTFE diaphragms** ensures excellent chemical resistance, making the pump compatible with a wide range of aggressive fluids, including acids, solvents, and corrosive liquids. This extends the pump s lifespan in harsh environments.

3. **Self-Priming Capability** Double diaphragm pumps are inherently **self-priming**, meaning they can draw in fluids from below the pump level without external priming, which simplifies installation and operation.

4. **Versatile Flow Control** The adjustable flow rate allows for precise regulation, making it suitable for applications requiring variable flow rates, such as chemical dosing, transfer, and metering systems.

5. **Low Maintenance** Compared to other positive displacement pumps, double diaphragm pumps typically require **minimal maintenance**, especially when using high-quality materials like PTFE and steel.

6. **Wide Fluid Compatibility** Due to the PTFE diaphragms and stainless steel components, it can handle **abrasive, viscous, and corrosive fluids** without degradation, making it ideal for industrial, laboratory, and pharmaceutical applications.

7. **Compact and Portable Design** The pump is often designed for **portable use**, allowing for easy relocation and installation in various settings, including fieldwork, lab setups, and temporary applications.

8. **Energy Efficiency** Double diaphragm pumps are generally **energy-efficient** compared to centrifugal pumps for viscous or low-flow applications, reducing operational costs.

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1. **Limited Flow Rate and Pressure** This specific model (PD05R) is designed for **low to moderate flow rates (typically up to 5 L/min)** and **low to medium pressure ( 1-2 bar)**. For high-volume or high-pressure applications, a larger or different pump model may be required.

2. **Potential Diaphragm Wear Over Time** While PTFE diaphragms are durable, they can **wear out with prolonged use**, especially if the fluid contains abrasive particles. This may require periodic replacement, adding to maintenance costs.

3. **Higher Initial Cost** Compared to basic plastic or rubber diaphragm pumps, the **steel and PTFE construction** increases the upfront cost, making it less economical for low-budget applications.

4. **Sensitivity to Fluid Contamination** If the fluid contains **solid particles or fibers**, these can damage the PTFE diaphragms or clog the pump, reducing efficiency and requiring more frequent cleaning or replacement.

5. **Limited Temperature Range** While PTFE has good chemical resistance, it has a **temperature limit (typically -20 C to 120 C)**. Extreme temperatures may degrade performance or damage the pump over time.

6. **Noise and Vibration** Some double diaphragm pumps can generate **moderate noise and vibration**, which may be a concern in sensitive environments like laboratories or cleanrooms.

7. **Specialized Installation Requirements** Proper installation, including correct piping and support, is crucial to prevent diaphragm damage or premature wear. Improper setup can lead to inefficiencies or failures.

8. **Not Ideal for High-Speed Applications** Due to mechanical limitations, these pumps are **not suited for extremely high-speed operations**, which may restrict their use in certain industrial processes.

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The **ARO PD05R-ASS-STT-B double diaphragm pump with steel air and PTFE diaphragms** is a **high-quality, durable, and chemically resistant** solution for applications requiring **low to moderate flow rates** with **corrosive or abrasive fluids**. Its **self-priming capability, low maintenance, and versatility** make it a strong choice for **industrial, laboratory, and chemical transfer applications**. However, its **limited flow/pressure capacity, higher cost, and sensitivity to contamination** may make it less suitable for **high-volume, high-pressure, or particle-laden fluid handling**.

- You need a **reliable, corrosion-resistant pump** for **low to moderate flow rates** (up to 5 L/min).

- Your application involves **acids, solvents, or aggressive chemicals**.

- You require a **portable, self-priming solution** with **minimal maintenance**.

- Budget constraints allow for a **premium, durable pump** rather than a cheaper alternative.

- You require **higher flow rates or pressure** (consider a larger diaphragm pump or peristaltic pump).

- Your fluid contains **abrasive particles** (a **ceramic or reinforced diaphragm pump** may be better).

- Cost is a major concern (a **plastic diaphragm pump** or **centrifugal pump** might suffice for less demanding applications).

- Noise or vibration is a critical factor (a **gear pump or progressive cavity pump** may be quieter).

For most **chemical transfer, laboratory, or industrial applications** where **chemical resistance and durability** are priorities, this pump is a **strong recommendation**. However, always verify the **specific flow, pressure, and fluid compatibility** requirements before purchasing.

Details:

Selling as is. Unable to test.

part #: pd05rassstt prices

• $499.00-$3120.05

specifications valvplu:

• brand: Aro
• mpn: Pd05r-ass-stt-b
• battery included: No
• weight: 17.3000
• depth: 11.700
• type: Positive Displacement Pumps Diaphragm Pumps
• length: 14.000
• features: Double Diaphragm Pump
• air consumption: Maximum 20 Scfm, Air Int
• country of origin: Us
• body material: Stainless Steel
• inlet diameter: 1/2 In
• diaphragm pump type: Single Diaphragm Pump

returns valvplu:

• policy: No Returns

general valvplu:

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

offer valvplu:

• started: May 11, 2026
• quantity: 1
• best offers: True
• sold: 0
• availability: In Stock
• options: Ship-to-home

shipping valvplu:

• cost: $0.00
• class: Standard
• carrier: USPS
• type: Fixed
• transit: 5-11 Days
• service: USPS Ground Advantage

seller valvplu:

• # reviews: 2769
• city: North Port, Florida
• rating: 99.8%

payments valvplu:

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

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