DWYER RMA-2-APF-SSV Rate Master Air Flow Meter Npt 0.1 1SCFH 1/8 100PSI

( Brand: Dwyer ), ( Manufacturer Part Number: RMA-2-APF-SSV ), ( Part Type: Flow Meter )

Review DWYER Rate master Flow Meter 0.1 To Air 1/8 Inch Npt 100psi

The **Dwyer RMA-2-APF-SSV Rate-Master Flow Meter** is a precision-engineered, air-flow measuring instrument designed for applications requiring accurate, reliable, and low-maintenance flow monitoring in compressed air systems. Part of Dwyer s renowned **Rate-Master series**, this model combines durability with high performance, making it an ideal choice for industrial, HVAC, laboratory, or pneumatic control applications where consistent airflow measurement is critical. With a **flow range of 0.1 to 1 standard cubic foot per hour (SCFH)**, this compact flow meter excels in low-flow applications, ensuring precise readings even at minimal air volumes. Its **1/8-inch NPT threaded connections** provide a secure, leak-resistant fit, accommodating standard piping systems without requiring excessive space, while the **100 PSI pressure rating** ensures safe operation in moderate to high-pressure environments, reducing the need for additional pressure regulators or protective components.

The **RMA-2-APF-SSV** features a **rotating vane mechanism** housed in a robust, corrosion-resistant body, which translates airflow into a direct, linear output signal for easy integration with digital indicators, controllers, or data logging systems. The **SSV (Stainless Steel Vane)** variant enhances longevity by resisting wear, moisture, and chemical exposure, making it suitable for environments where standard materials might degrade over time. Its **low-pressure drop design** minimizes energy loss, improving system efficiency while maintaining accuracy. The meter s **compact, lightweight construction** allows for easy installation in tight spaces, whether in pneumatic test stands, laboratory setups, or industrial process control systems. Additionally, the **Rate-Master s analog or digital output options** (depending on model configuration) provide flexibility for integration with existing instrumentation, enabling seamless monitoring and automation.

Beyond its technical specifications, the **Dwyer RMA-2-APF-SSV** is engineered for ease of use, featuring a **clear, durable scale** (when paired with a compatible indicator) that allows for quick visual verification of flow rates without complex calibration. Its **self-lubricating vane mechanism** reduces maintenance requirements, while the **sealed construction** protects internal components from dust, moisture, and contaminants, ensuring consistent performance over extended periods. Whether used for **leak detection, pneumatic system calibration, or process control**, this flow meter delivers the reliability and precision demanded by engineers and technicians in demanding applications. With its **broad compatibility with air systems** and **industry-standard connections**, the **RMA-2-APF-SSV** stands as a versatile, high-performance solution for precise airflow measurement in a wide range of industries.

### **Pros and Cons of buying a Dwyer RMA-2-APF-SSV Rate-Master Flow Meter (0.1 1 SCFH Air, 1/8" NPT, 100 PSI)**

1. **Precision and Reliability** The Dwyer RMA-2 series is known for its accurate flow measurement, making it suitable for applications requiring consistent air or gas flow control (e.g., lab equipment, pneumatic systems, or small-scale industrial processes).

2. **Compact and Lightweight** The 1/8" NPT connection and small size make it ideal for installations where space is limited, such as in research labs, medical devices, or compact control panels.

- Small pneumatic actuators

- Laboratory gas delivery systems

- Low-pressure air filtration or calibration setups

4. **Durable Construction** Built to handle up to **100 PSI**, it is suitable for moderate-pressure applications where robustness is needed without excessive bulk.

5. **Easy Installation** The **APF (Aluminum Pressure Fitting)** and **SSV (Stainless Steel Valve)** variants suggest corrosion resistance and durability, simplifying maintenance in environments with moisture or chemical exposure.

6. **Direct-Reading Display** The analog or digital (depending on model) readout allows for quick visual confirmation of flow rates without additional instrumentation.

7. **Compatibility with Air and Light Gases** Since it is rated for air (and likely other non-corrosive gases), it works well in general-purpose applications where high purity is not critical.

8. **Cost-Effective for Low-Flow Needs** For applications requiring only **0.1 1 SCFH**, this meter is likely more affordable than larger industrial flow meters while still providing adequate precision.

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1. **Limited Flow Range** The **0.1 1 SCFH** range is very narrow. If your application requires higher flow rates (e.g., >1 SCFH), this meter will not be suitable, and you may need a different model (e.g., Dwyer s RMA-3 or RMA-4 series).

2. **No Digital Output (Likely Analog Only)** If you need **programmable or digital integration** (e.g., for PLCs or data logging), this basic analog meter may require additional converters or sensors.

3. **Pressure Drop Considerations** Low-flow meters like this can introduce **significant pressure drop**, which may affect system efficiency in sensitive applications.

4. **No Built-In Calibration Adjustment** Unlike some higher-end meters, this model may not allow for easy recalibration, requiring professional servicing if accuracy drifts over time.

5. **Single-Gas Rating** While it works for **air**, it may not be suitable for **corrosive, high-purity, or high-temperature gases** without additional verification from Dwyer.

6. **Potential Wear Over Time** Moving parts (e.g., the valve mechanism) in low-flow meters can degrade with prolonged use, though Dwyer parts are generally reliable.

7. **Limited Brand Support Outside North America** Dwyer is primarily a U.S.-based brand, so parts and service may be harder to find internationally.

8. **No Built-In Over-Pressure Protection** While rated for 100 PSI, it lacks integrated pressure relief, meaning external protection (e.g., a pressure regulator) is still required for safety.

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The **Dwyer RMA-2-APF-SSV** is a **well-suited, cost-effective solution for precise low-flow air measurement (0.1 1 SCFH)** in applications where space is limited and moderate pressure (100 PSI) is acceptable. It excels in **lab settings, small pneumatic systems, or calibration tasks** where accuracy and compactness are priorities.

- **Higher flow rates** (>1 SCFH),

- **Digital integration or remote monitoring**,

- **Corrosive or high-purity gas handling**,

- **Frequent recalibration or industrial-grade durability**,

then a different model (e.g., Dwyer s **RMA-3, RMA-4, or digital flow meters**) may be more appropriate.

---

You need **accurate, low-flow air measurement (0.1 1 SCFH)**.

Your system operates at ** 100 PSI** with **air or similar non-corrosive gases**.

Space is limited, and a **compact, analog-readout** solution is preferred.

Budget constraints make this a **cost-effective choice** over higher-end alternatives.

You require **flow rates above 1 SCFH**.

You need **digital output, PLC integration, or data logging**.

Your application involves **corrosive gases, high purity, or extreme temperatures**.

You anticipate **frequent recalibration or heavy-duty industrial use**.

- For **higher flow ranges**, consider **Dwyer RMA-3 or RMA-4 series**.

- For **digital control**, look into **Dwyer s electronic flow meters (e.g., RMA-5)** or third-party digital flow sensors.

- For **corrosive environments**, verify **material compatibility** (e.g., stainless steel or PTFE versions if available).

Overall, this is a **solid choice for its intended range**, but always cross-validate with your specific application requirements before purchasing.

Details:

Range: 0.1 to 1SCFH. Dwyer Rate-Master Flow Meter. Max Pressure: 100psi. If you do not have an account No Worries.

This is a surplus item. Specifications: model #: RMA-2-APF-SSV. Port: 1/8in NPT.

part #: rma2apf prices

• $47.00-$88.00

specifications pneumativalv:

• brand: Dwyer
• mpn: Rma-2-apf-ssv
• part type: Flow Meter

shipping pneumativalv:

• service: USPS First Class, USPS Priority Mail Padded Flat Rate Envelope, UPS Next Day Air
• carrier: USPS, UPS
• class: Standard, Expedited, One-day
• type: Calculated
• transit: 2-4 Days
• cost: $0.00

general pneumativalv:

• condition: Used
• Pump Flow Controllers > Flow Controllers Meters > Flow Meters

offer pneumativalv:

• started: April 27, 2026
• best offers: True
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 1

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• paid by: Seller
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seller pneumativalv:

• city: Osseo, Minnesota
• rating: 100.0%
• # reviews: 45399

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