1. Air Pressure Gauges Offers
  2. sku: 17830681646862722
  3. ASHCROFT 45-1279-8SL-04L-300

ASHCROFT 45-1279-8SL-04L-300 Duragauge Bottom Mount Water Pressure Gauge 4-1/2

45-1279-8sl-04l-300 Ashcroft 45-1279-8sl-04l-300# Duragauge Pressure Gauge 300 Psi 4-1/2 In Bottom Mount

( Brand: Ashcroft ), ( Manufacturer Part Number: 45-1279-8SL-04L-300 ), ( Part Type: Pressure Mount Gauge ), ( Face Diameter: 4-1/2 In ), ( Mounting Position: Bottom Mount ), ( Maximum Pressure: 300 Psi )

Review ASHCROFT 45-1279-8sl-04l-300# Duragauge Pressure Gauge 300 Psi 4-1/2 In Bottom Mount

The **Ashcroft 45-1279-8SL-04L-300 Duragauge Pressure Gauge** is a premium, high-performance instrument designed for demanding industrial, commercial, and mechanical applications where precision, durability, and reliability are paramount. Part of Ashcroft s renowned **Duragauge** series, this gauge is engineered to deliver accurate pressure readings in environments where harsh conditions, frequent cycling, and extreme temperatures demand robust construction. With a **300 psi (20.7 bar) maximum range**, this gauge is ideal for systems requiring moderate to high-pressure monitoring, such as HVAC units, refrigeration systems, hydraulic applications, and pneumatic controls. Its **4-1/2 inch (114.3 mm) dial face** provides ample visibility for clear, easy-to-read measurements, making it suitable for both wall-mounted and panel installations thanks to its **bottom-mount configuration**.

Crafted from **high-quality brass and stainless steel components**, the gauge is built to withstand corrosion, vibration, and thermal fluctuations, ensuring long-term performance even in challenging settings. The **8SL (8-1/2 scale) dial** offers a balanced ratio of scale length to dial size, optimizing readability while maintaining a compact footprint. The **0-300 psi range** is marked with precise, legible graduations, allowing operators to quickly assess pressure levels with minimal ambiguity. Additionally, the gauge features Ashcroft s **Duragauge seal**, a proprietary design that enhances accuracy by minimizing internal leakage and maintaining consistent performance over extended use.

For added protection, the gauge is equipped with a **stainless steel case and a durable glass window**, which resists impact, moisture, and dust, making it suitable for both indoor and outdoor applications. The **bottom-mount design** simplifies installation, allowing for easy integration into existing systems with minimal space requirements. Whether used in industrial machinery, automotive diagnostics, or commercial refrigeration, this gauge delivers the precision and durability expected from Ashcroft s legacy of quality engineering. Its combination of **high visibility, robust construction, and reliable performance** makes it a trusted choice for professionals who demand dependable pressure measurement in their operations.

The **Ashcroft 45-1279-8SL-04L-300 Duragauge Pressure Gauge** is a high-quality, industrial-grade pressure gauge designed for precision and durability. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros**

1. **High Accuracy and Precision**

The Duragauge series from Ashcroft is known for its exceptional accuracy, typically within 1% of full-scale range. This makes it ideal for applications requiring precise pressure monitoring, such as HVAC systems, hydraulic systems, or industrial processes where small deviations can impact performance.

2. **Durable Construction**

This gauge is built with a **stainless steel bourdon tube**, which is resistant to corrosion, wear, and extreme temperatures. The **300 series stainless steel housing** ensures longevity even in harsh environments, including those exposed to moisture, chemicals, or temperature fluctuations.

3. **Wide Range Compatibility**

With a **0-300 PSI (20.7 bar) range**, this gauge is versatile for many applications, from low-pressure systems (e.g., refrigeration, compressed air) to moderate industrial setups. The **4-1/2" dial size** provides ample readability, making it easier to monitor pressure at a glance.

4. **Bottom-Mount Design**

The **bottom-mount connection** (NPT thread) allows for easy installation in tight spaces or where vertical mounting is preferred. This design is particularly useful in applications where the gauge needs to be mounted on a pipe or fitting without obstructing workflow.

5. **Rugged and Reliable**

Ashcroft is a well-established brand in the pressure gauge industry, and the Duragauge line is renowned for reliability. The **sealed back and front** design protects internal components from contamination, reducing the risk of gauge failure over time.

6. **Easy to Read**

The **large 4-1/2" dial** with clear markings ensures that pressure readings are easily visible from a distance, which is beneficial in industrial or commercial settings where quick assessments are necessary.

7. **Compatibility with Various Fluids**

The **stainless steel construction** makes it suitable for a wide range of fluids, including water, air, oil, and some chemicals (though always verify compatibility with the specific fluid in use).

8. **Long-Term Value**

Due to its durability and precision, this gauge is likely to outlast cheaper alternatives, reducing the need for frequent replacements and saving money in the long run.

---

### **Cons**

1. **Higher Upfront Cost**

Ashcroft pressure gauges are premium products, and this model is priced significantly higher than basic, lower-quality gauges. For applications where extreme precision is unnecessary, a more affordable option might suffice.

2. **Potential Overkill for Low-Stress Applications**

If the application involves very low-pressure systems (e.g., household plumbing) or only requires occasional checks, the **high accuracy and durability** of this gauge may be unnecessary, making it a less cost-effective choice.

3. **Specialized Installation Requirements**

The **bottom-mount design** may not be compatible with all setups, particularly if the system requires top-mount or side-mount gauges. Additional adapters or modifications might be needed, adding to installation complexity.

4. **Limited Range for High-Pressure Applications**

While the **0-300 PSI range** is suitable for many industrial uses, it may be too low for applications requiring higher pressures (e.g., hydraulic presses, high-pressure steam systems). In such cases, a gauge with a higher range (e.g., 0-600 PSI or higher) would be more appropriate.

5. **Potential for Calibration Drift Over Time**

Even high-quality gauges can experience slight drift in accuracy over years of use, especially if exposed to extreme conditions. Regular calibration (e.g., every 1-2 years) may be required to maintain precision, adding to maintenance costs.

6. **Weight and Bulk**

The **4-1/2" dial and stainless steel construction** make this gauge heavier and bulkier than smaller, cheaper models. This could be a consideration in space-constrained environments or where weight is a factor.

7. **Limited Color Options**

Most Ashcroft Duragauge models come in standard colors (e.g., white or black dials with black or red markings). Custom color-coding for specific applications (e.g., hazard warnings) may require additional ordering or modifications.

---

### **Conclusion**

The **Ashcroft 45-1279-8SL-04L-300 Duragauge Pressure Gauge** is an excellent choice for applications requiring **high accuracy, durability, and reliability**. Its **stainless steel construction, large dial size, and wide compatibility** make it ideal for industrial, HVAC, hydraulic, and commercial settings where precision and longevity are critical. However, its **higher cost and potential over-specification for low-stress applications** may make it less suitable for casual or low-pressure uses.

If your application demands **reliable, long-term pressure monitoring** and you can justify the investment, this gauge is a **strong recommendation**. For budget-conscious or low-demand applications, a **lower-cost gauge** (e.g., from brands like Omega, Wagner, or basic industrial gauges) may be sufficient without sacrificing too much performance.

---

### **Final Recommendation**

**Buy this gauge if:**

- You need **high accuracy ( 1% or better)** for critical applications.

- Your system operates in **harsh or corrosive environments** (e.g., moisture, chemicals, temperature fluctuations).

- You require **long-term reliability** and are willing to invest in a premium product.

- The **4-1/2" dial size** and **bottom-mount design** fit your installation needs.

- Your pressure range is **0-300 PSI**, and you do not need higher ranges.

**Avoid this gauge if:**

- Your budget is tight, and you can use a **lower-cost gauge** for your application.

- Your system involves **very low pressures** (e.g., household or minor plumbing) where precision is unnecessary.

- You require **higher pressure ranges** (e.g., >300 PSI) or **custom color-coding**.

- You prefer **smaller, lighter gauges** for space-constrained setups.

For most **industrial, HVAC, or hydraulic applications**, this gauge is a **solid, high-quality purchase** that will serve you well for years with proper care. Always ensure it is **properly installed, calibrated, and protected** from physical damage to maximize its lifespan.

Details:

Ashcroft Duragauge Pressure Gauge 300 psi 4-1/2 in Bottom Mount.

part #: 4512798sl04l300 price

  • $80.00

specifications pressureswitchiz:

  • brand: Ashcroft
  • mpn: 45-1279-8sl-04l-300
  • part type: Pressure Mount Gauge
  • face diameter: 4-1/2 In
  • mounting position: Bottom Mount
  • maximum pressure: 300 Psi

seller pressureswitchiz:

  • # reviews: 18
  • city: Saint Johns, Florida
  • rating: 100.0%

payments pressureswitchiz:

  • credit card: Discover
  • wallet: Paypal
  • other

general pressureswitchiz:

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

shipping pressureswitchiz:

  • service: USPS Ground Advantage
  • cost: $7.22
  • transit: 5-11 Days
  • type: Calculated
  • class: Standard
  • carrier: USPS

offer pressureswitchiz:

  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
  • best offers: True
  • started: March 22, 2026
  • quantity: 1

returns pressureswitchiz:

  • policy: No Returns
part type: pressure mount gauge, face diameter: 4-1/2 in, mounting position: bottom mount, maximum pressure: 300 psi,
category: business & industrial > hydraulics, pneumatics, pumps plumbing > air pressure gauges, sku: 17830681646862722,
Ashcroft 45-1279-8SL-04L-300 Is Similar To:
pressureswitchiz logo
1 offer $80.00 USD
  • New – Open box. Offer #1 priced at $80.00 + $7.80 shipping estimate = $87.80* total. Ashcroft Duragauge Pressure Gauge 300 psi 4-1/2 in Bottom Mount.+$7.80 shipping

Copyright © pressureswitchiz.com