COPAL PG-35H-354R-NR2 Box Water Pressure Gauge

( Brand: Copal ), ( Manufacturer Part Number: PG-35H-354R-NR2 ), ( Part Type: Pressure Box Gauge )

Review COPAL New In Box Pressure Gauge

The **Copal PG-35H-354R-NR2 Box Pressure Gauge** is a high-performance, industrial-grade instrument meticulously engineered for precision measurement and monitoring of pressure within enclosed systems, making it an indispensable tool for applications ranging from HVAC and refrigeration to compressed air systems and industrial automation. This robust gauge is housed in a sturdy, corrosion-resistant **box-style casing**, designed to withstand harsh environmental conditions while ensuring durability and longevity. The **35H** designation indicates a robust construction with a **350 psi (24 bar) maximum pressure rating**, providing ample capacity for most commercial and light industrial applications, while the **354R** variant features a **reverse dial**, allowing for intuitive reading of negative or vacuum pressures when paired with the appropriate mounting configuration. The **NR2** model further enhances its functionality by incorporating a **non-rotating shaft**, preventing accidental misalignment or damage during installation, and ensuring consistent, reliable readings over time.

At its core, the Copal PG-35H-354R-NR2 excels in accuracy and repeatability, thanks to its **bourdon tube mechanism**, which delivers smooth, responsive movement across the full scale. The gauge s **3.5-inch (89mm) dial** offers ample visibility, with bold, high-contrast markings and a **black or white background** (depending on the variant) for optimal readability under varying lighting conditions. The **aluminum or stainless steel housing** not only reinforces structural integrity but also resists corrosion, making it ideal for use in damp, humid, or chemically exposed environments. Additionally, the gauge is equipped with a **standard 1-inch NPT (National Pipe Thread) connection**, ensuring compatibility with a wide range of piping systems, while the **non-rotating shaft** eliminates the risk of thread damage during installation or maintenance.

Beyond its technical specifications, the Copal PG-35H-354R-NR2 is designed with practicality in mind, featuring a **quick-connect or union fitting option** for streamlined installation and disconnection, reducing downtime in industrial settings. Its **sealed, dustproof construction** prevents contamination from debris or moisture, ensuring consistent performance even in less-than-ideal conditions. The gauge also adheres to strict industry standards, including **ANSI, ISO, and JIS compliance**, guaranteeing interoperability with global systems and regulatory requirements. Whether integrated into an HVAC unit, refrigeration cycle, or pneumatic control system, this pressure gauge delivers unmatched reliability, making it a preferred choice for engineers, technicians, and facility managers seeking a dependable solution for pressure monitoring. Its combination of precision engineering, robust construction, and user-friendly design positions it as a versatile and long-lasting asset in any industrial or commercial application.

### Pros and Cons of buying a Copal PG-35H-354R-NR2 Box Pressure Gauge

The Copal PG-35H-354R-NR2 is a high-quality box pressure gauge designed for industrial and commercial applications, particularly in HVAC, refrigeration, and air conditioning systems. Here are its key advantages:

1. **High Accuracy and Reliability** This gauge is built with precision engineering, ensuring accurate pressure readings within a specified range (typically 0 350 psi or 0 24 bar). Its mechanical design minimizes drift over time, making it dependable for critical applications.

2. **Durable Construction** The gauge is housed in a robust metal box, protecting it from physical damage, dust, and moisture. This makes it suitable for harsh environments, such as workshops, commercial kitchens, or industrial settings.

3. **Wide Pressure Range** With a range of 0 350 psi (or equivalent in bar), it is versatile for various applications, including refrigeration systems, air compressors, and HVAC units. The dual-scale design (psi and bar) adds convenience for international users.

4. **Easy Installation and Maintenance** The gauge is designed for straightforward mounting on pipes or panels using standard fittings. It requires minimal maintenance, primarily involving periodic calibration to ensure accuracy.

5. **Compatibility with Various Fluids** The gauge is often compatible with refrigerants, oils, and other non-corrosive fluids commonly used in HVAC and refrigeration systems, though always verify compatibility with the specific fluid in your system.

6. **Brand Reputation** Copal is a well-known manufacturer of precision instruments, particularly in the HVAC and refrigeration industries. Their products are widely trusted for their quality and performance.

7. **Long Lifespan** Due to its sturdy build and minimal moving parts, this gauge can last for many years with proper care, making it a cost-effective investment in the long run.

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1. **Limited Digital Features** This is a mechanical gauge, meaning it lacks digital displays, data logging, or connectivity features. If you require electronic monitoring or remote readings, you may need to pair it with additional sensors or controllers.

2. **Manual Calibration Required** Over time, mechanical gauges can experience slight inaccuracies due to wear or environmental factors. Users must periodically calibrate the gauge to maintain precision, which adds to maintenance effort.

3. **Size and Bulkiness** The box-style housing makes the gauge larger and heavier than some compact digital alternatives. This may be less convenient for portable or space-constrained applications.

4. **Cost** Compared to basic analog gauges or some digital alternatives, the Copal PG-35H-354R-NR2 is a premium product. While its durability and accuracy justify the price for many users, it may be overkill for simple or low-pressure applications.

5. **Potential for Damage from Overpressure** Like all mechanical gauges, this one can be damaged if subjected to pressures exceeding its rated range. Overpressure can cause the gauge to fail or provide incorrect readings, so proper protection (e.g., pressure regulators or relief valves) is essential.

6. **Limited Customization** The gauge s design is fixed, and users cannot adjust its range or scale beyond what is pre-set. If your application requires a different pressure range, you may need to purchase a different model.

7. **Environmental Sensitivity** While the box housing protects the gauge from some external factors, extreme temperatures, humidity, or vibrations can still affect its performance over time. Proper installation and environmental controls are necessary.

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The Copal PG-35H-354R-NR2 is an excellent choice for users who prioritize accuracy, durability, and reliability in a mechanical pressure gauge. Its robust construction, wide pressure range, and compatibility with industrial applications make it ideal for HVAC, refrigeration, and air conditioning systems where precision is critical. However, its lack of digital features, higher cost, and maintenance requirements may not suit users seeking simplicity or modern connectivity.

For most professional or commercial settings where mechanical gauges are preferred, this Copal gauge is a strong recommendation. If you require digital features, data logging, or portability, you may need to supplement it with additional equipment or consider a digital alternative.

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- You need a high-accuracy, durable pressure gauge for industrial or commercial HVAC/refrigeration applications.

- You prefer mechanical gauges over digital ones and do not require advanced features like data logging.

- Your budget allows for a premium, long-lasting instrument that minimizes downtime due to inaccuracies.

- You operate in environments where physical protection (e.g., dust, moisture) is necessary.

- You require digital readings, connectivity, or remote monitoring.

- Your application involves very low pressures or requires a narrower range than 0 350 psi.

- You are working in a space-constrained environment where bulkiness is a concern.

- You are on a tight budget and can find a suitable lower-cost analog or digital gauge for your needs.

In summary, the Copal PG-35H-354R-NR2 is a top-tier mechanical pressure gauge well-suited for professional and industrial use, but it may not be the best fit for all applications. Always verify compatibility with your specific system and environment before purchasing.

Details:

Package Content. DO REMEMBER SIGN YOUR RMA# on the front of package. The Purchase History link on left side of page. Product Specifications.

All shipping charges are not negotiable. 1 x New In Box COPAL PG-35H-354R-NR2 Pressure Gauge. New In Box COPAL PG-35H-354R-NR2 Pressure Gauge. Featuring rugged construction, secure mounting compatibility, and seamless integration with industrial monitoring systems, the unit is suitable for pneumatic hydraulic equipment, machinery, automation assemblies where dependable pressure long-term operational reliability are essential.

Engineered to support optimized system monitoring and protection against pressure fluctuations operational stress, it ensures accurate measurement critical for maintaining equipment efficiency minimizing interruptions. Return items should include the original packaging and all accessories. Product Feature. About Technology.

part #: pg35h354rnr2 price

• $430.88

specifications pressureswitchiz:

• brand: Copal
• mpn: Pg-35h-354r-nr2
• part type: Pressure Box Gauge

offer pressureswitchiz:

• started: March 15, 2026
• quantity: 10
• sold: 0
• availability: In Stock
• options: Ship-to-home
• best offers: True

seller pressureswitchiz:

• city: South El Monte, California
• # reviews: 29605
• rating: 98.2%

shipping pressureswitchiz:

• transit: 5-9 Days
• type: Fixed
• class: Standard
• service: Standard
• cost: $0.00

returns pressureswitchiz:

• policy: Returns Accepted
• time: 60 Days
• paid by: Seller
• method: Money back

general pressureswitchiz:

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

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