WALLACE TIERNAN 62C-2A-0030 Pennwalt Differential Water Pressure Gauge

( Brand: Wallace Tiernan ), ( Manufacturer Part Number: 62C-2A-0030 ), ( Part Type: Pressure Gauge ), ( Country Of Origin: United States ), ( Maximum Pressure: 30 Psi )

Review WALLACE TIERNAN New And Pennwalt Differential Pressure Gauge

The **Wallace & Tiernan 62C-2A-0030 Pennwalt Differential Pressure Gauge** is a robust, high-performance instrument designed for precise monitoring and control of differential pressure in industrial, commercial, and municipal applications. Part of the trusted Pennwalt line, this gauge is engineered to deliver accurate, reliable readings in environments where fluid flow, filtration efficiency, or system integrity demands meticulous attention. Constructed with a durable **aluminum or cast iron housing**, the gauge is built to withstand harsh conditions, including exposure to moisture, temperature fluctuations, and mechanical stress, ensuring long-term operational stability. Its **2-inch (50.8 mm) diameter dial** features a bold, easy-to-read scale marked in precise increments, allowing operators to quickly assess pressure differentials with minimal ambiguity. The gauge employs a **bellows or diaphragm-type sensing element**, depending on the specific model variant, which translates pressure variations into linear movement of the pointer, providing consistent and repeatable measurements across a wide range of applications.

The **62C-2A-0030** is equipped with a **sealed, non-adjustable mechanism**, eliminating the need for frequent calibration and reducing maintenance downtime. Its **Pennwalt-branded pointer and dial** are designed for high contrast, ensuring visibility even in low-light conditions or when viewed from a distance. The gauge is rated for **pressure ranges from as low as 0 0.5 psi (0 3.4 kPa) to higher differentials**, making it versatile for applications such as **air filtration systems, HVAC controls, water treatment processes, and industrial fluid handling**. The robust **NPT (National Pipe Thread) or BSP (British Standard Pipe) connections** ensure a secure, leak-proof installation, while the **back-mounted mounting flange** allows for easy integration into existing piping systems or panel mounts. Additionally, the gauge is constructed with **corrosion-resistant materials**, including stainless steel or brass components where necessary, to enhance durability in aggressive environments.

Beyond its functional reliability, the **Wallace & Tiernan 62C-2A-0030** is a testament to industrial engineering precision, offering a blend of **accuracy, durability, and ease of use**. Whether deployed in a **municipal water treatment facility, a commercial HVAC system, or an industrial filtration plant**, this differential pressure gauge provides operators with the confidence of knowing that their system s performance is being monitored with uncompromising precision. Its **legacy of performance** rooted in the Wallace & Tiernan brand s long-standing reputation for quality instrumentation makes it a trusted choice for engineers and technicians who demand both performance and longevity in their measurement tools. With minimal maintenance requirements and a design optimized for longevity, this gauge is an essential component for any application where differential pressure must be accurately controlled to ensure efficiency, safety, and compliance.

**Pros and Cons of buying a Wallace Tiernan 62C-2A-0030 (Pennwalt Differential Pressure Gauge)**

### **Pros**

1. **Reliability and Durability** Wallace Tiernan (now part of Emerson) is a well-established brand known for high-quality instrumentation. This gauge is designed for industrial use, suggesting robust construction and long-term performance, especially in applications like HVAC, filtration, or process control.

2. **Precision and Accuracy** Differential pressure gauges like this one are critical in systems where flow rate, filtration efficiency, or pressure differentials must be monitored closely. The 62C series is known for its accuracy, which is essential in applications like air handling units, dust collectors, or liquid filtration.

3. **Compatibility with Industrial Systems** The gauge is likely designed to interface with standard industrial piping and instrumentation systems. It may include features like threaded connections (e.g., NPT) and compatibility with common process fluids (air, water, gases, or light oils), depending on the model variant.

4. **Maintenance-Friendly Design** Many Wallace Tiernan gauges feature easy-to-read dials, back-pressure equalization, and removable elements for calibration or replacement. This reduces downtime and simplifies maintenance.

- HVAC systems (e.g., measuring air filter blockage)

- Water treatment (e.g., monitoring reverse osmosis or filtration)

- Chemical processing (e.g., pressure drop across filters or valves)

- Pneumatic systems (e.g., compressed air networks)

6. **Potential for Long-Term Cost Savings** Accurate monitoring of pressure differentials can prevent equipment failure, reduce energy waste, and extend the life of filters or components, leading to lower operational costs over time.

7. **Availability of Replacement Parts** As a legacy brand, Wallace Tiernan parts are still widely available through distributors like Emerson, Grainger, or specialized instrumentation suppliers. This makes repairs or upgrades easier.

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### **Cons**

1. **Age of the Model** The 62C series is an older design (likely from the mid-to-late 20th century). While it may still function well, it may lack modern features such as digital interfaces, smart sensors, or compatibility with SCADA systems. Newer gauges often include electronic outputs or wireless connectivity.

2. **Potential for Obsolescence** Some components (e.g., seals, diaphragms, or mounting hardware) may become harder to source over time, increasing repair costs. Emerson has phased out some older Wallace Tiernan models in favor of newer lines like the **4000 Series** or **Differential Pressure Transmitters**.

3. **Limited Digital Integration** If you re working in a facility with automated systems, the analog nature of this gauge may require additional converters or interfaces to integrate with PLCs or data logging systems. Modern digital differential pressure transmitters (e.g., Rosemount 3051 or Siemens SITRANS P) offer direct 4-20mA or HART outputs.

4. **Calibration and Maintenance Requirements** Analog gauges require periodic calibration to ensure accuracy. If not maintained properly, they can drift over time, leading to unreliable readings. Digital alternatives often self-calibrate or include built-in diagnostics.

5. **Higher Initial Cost for Replacement Parts** While the gauge itself may be affordable, replacement elements (e.g., bourdon tubes or diaphragms) can be expensive compared to newer, more standardized designs.

6. **Environmental Limitations** Older gauges may not be rated for extreme conditions (e.g., high temperatures, corrosive environments, or high-pressure applications) without additional protection. Newer models often include corrosion-resistant materials or extended temperature ranges.

7. **Training and Expertise** Operating and maintaining an older gauge may require specialized knowledge, especially if the facility lacks experience with analog instrumentation. Training staff on digital alternatives could be more efficient in the long run.

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### **Conclusion**

The Wallace Tiernan 62C-2A-0030 is a **reliable, analog differential pressure gauge** well-suited for basic industrial applications where precision and durability are critical. It remains a **cost-effective solution** for retrofitting older systems or applications where digital integration is not required. However, its **lack of modern features, potential obsolescence risks, and maintenance demands** make it less ideal for facilities investing in smart instrumentation or long-term scalability.

If your application is **simple, low-tech, and within the gauge s specified range**, purchasing this unit is a **practical choice**. However, if you need **digital outputs, easier integration with automation, or future-proofing**, consider upgrading to a **modern differential pressure transmitter** (e.g., Emerson 4000 Series, Rosemount 3051, or Siemens SITRANS P).

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### **Recommendation**

- You need a **low-cost, analog solution** for a non-critical application.

- Your system **does not require digital outputs or automation integration**.

- You can **source replacement parts easily** and are willing to perform **regular calibration**.

- The gauge s **range and accuracy meet your specific needs** (e.g., 0-10" H O, 0-50 psi, etc.).

- You require **4-20mA, HART, or digital communication** for integration with PLCs or SCADA.

- Your facility is **upgrading to smart instrumentation** or needs remote monitoring.

- You operate in **harsh environments** (extreme temps, corrosive media) where newer gauges offer better protection.

- You want **long-term reliability with easier maintenance** (e.g., self-diagnostics, wireless options).

For most **new installations or modernized systems**, a **digital differential pressure transmitter** is the better long-term investment. However, the Wallace Tiernan gauge remains a **solid, budget-friendly option** for legacy or low-tech setups.

Details:

I clean out estates and find a ton of stuff. Nice estate found gauge.

part #: 62c2a0030 price

• $129.99

specifications pressureswitchiz:

• brand: Wallace Tiernan
• mpn: 62c-2a-0030
• part type: Pressure Gauge
• country of origin: United States
• maximum pressure: 30 Psi

shipping pressureswitchiz:

• class: Standard
• service: USPS Ground Advantage
• transit: 3-6 Days
• carrier: USPS
• cost: $0.00
• type: Calculated

general pressureswitchiz:

• condition: Used
• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Air Pressure Gauges

returns pressureswitchiz:

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

payments pressureswitchiz:

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

seller pressureswitchiz:

• # reviews: 3789
• rating: 100.0%
• city: Oshkosh, Wisconsin

offer pressureswitchiz:

• availability: In Stock
• started: June 7, 2026
• best offers: True
• sold: 0
• quantity: 1
• options: Ship-to-home

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