ASHCROFT 251490A02B3 Water Pressure Gauge 3PSI

( Brand: Ashcroft ), ( Manufacturer Part Number: 251490A02B3 ), ( Part Type: Pressure Gauge )

Review ASHCROFT 251490a02b3# 1490 Series Pressure Gauge To 3psi

The **Ashcroft 251490A02B3 1490 Series Pressure Gauge (3 PSI)** is a precision-engineered, high-performance instrument designed for reliable and accurate monitoring of low-pressure systems in industrial, commercial, and residential applications. Part of Ashcroft s renowned **1490 Series**, this gauge is built to deliver exceptional durability and readability, making it an ideal choice for environments where consistent performance is critical. Constructed with a **3-inch dial face**, the gauge features a bold, high-contrast scale with clear, easy-to-read markings, ensuring operators can quickly assess pressure levels without ambiguity. The **black-and-white dial** provides superior contrast against the white background, reducing eye strain and minimizing misreadings, even in low-light conditions. Engineered with a **bourdon tube mechanism**, this gauge offers precise measurements with minimal hysteresis, ensuring accuracy across a wide range of applications, from HVAC systems and refrigeration units to pneumatic controls and low-pressure air or gas lines.

The **3 PSI range** makes this gauge particularly suited for delicate systems where pressure must be carefully managed, such as in laboratory settings, medical equipment, or light-duty industrial processes. Its **brass housing** provides robust protection against corrosion and mechanical stress, while the **aluminum dial** resists warping and maintains its structural integrity over time. The gauge is sealed with a **vacuum-tight diaphragm**, preventing leaks and ensuring long-term reliability in fluctuating pressure environments. For added convenience, the **1/4-inch NPT male connection** allows for easy installation in standard piping systems, and the **back-mounted connection** keeps the dial face unobstructed, enhancing visibility. Additionally, the gauge is equipped with a **screw-type mounting bracket**, offering flexibility in installation orientations while maintaining stability.

Ashcroft s commitment to quality is evident in the **1490 Series ** design, which incorporates a **self-venting mechanism** to prevent condensation buildup, further extending the gauge s operational lifespan. The **high-visibility pointer** with a **red tip** ensures quick identification of pressure levels, while the **durable glass window** protects the internal components from dust and debris. This gauge also complies with **ANSI B40.100 standards**, guaranteeing consistency in performance and interoperability with other industry-compliant systems. Whether used in a controlled manufacturing facility, a commercial refrigeration unit, or a precision instrumentation setup, the **Ashcroft 251490A02B3 3 PSI Pressure Gauge** delivers dependable, accurate readings with minimal maintenance, making it a trusted asset for professionals who demand precision and longevity in their instrumentation.

### **Pros and Cons of buying a Ashcroft 251490A02B3 (1490 Series, 3 PSI Pressure Gauge)**

1. **Reliability and Durability** Ashcroft is a well-established brand known for high-quality pressure gauges. The 1490 series is designed for industrial and commercial applications, offering robust construction to withstand harsh environments.

2. **Accurate Readings** The gauge is calibrated for precision, ensuring consistent and reliable pressure measurements within its specified range (0-3 PSI). This is critical in applications where accuracy matters, such as HVAC, pneumatic systems, or low-pressure air monitoring.

3. **Compact and Versatile Mounting** The gauge has a standard 1.5" (38mm) flange connection, making it compatible with most piping systems. Its compact size allows for easy installation in tight spaces.

4. **Durable Housing** The gauge is likely made from materials resistant to corrosion (such as stainless steel or brass), which extends its lifespan in environments with moisture or chemical exposure.

5. **Easy to Read Dial** The large, clear dial with bold markings ensures quick and accurate visual readings, reducing the need for additional tools or calibration checks.

- HVAC systems

- Pneumatic tools and machinery

- Compressed air systems

- Laboratory or process control settings

7. **Maintenance-Friendly** Ashcroft gauges are designed for easy servicing, including back-seat replacement for the bourdon tube, which prolongs the gauge s operational life.

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1. **Limited Pressure Range** At only 3 PSI, this gauge is not suitable for high-pressure applications. If your system requires higher pressures, this model will not be functional.

2. **Potential for Wear Over Time** Like all mechanical gauges, the bourdon tube and internal components can degrade with prolonged use, especially in fluctuating pressure conditions. Regular recalibration may be necessary.

3. **Cost Relative to Simpler Gauges** While not extremely expensive, it may be pricier than basic, lower-quality gauges from less reputable brands. However, the investment is justified by its durability and accuracy.

4. **Calibration Requirements** Over time, gauges can drift, requiring periodic calibration to maintain accuracy. This adds to maintenance costs if not handled in-house.

5. **Limited Customization** The gauge comes in standard configurations. If you need specialized features (e.g., remote sensing, digital integration, or non-standard mounting), additional accessories may be required.

6. **Potential for Glass Breakage** The protective glass on the dial can crack or shatter if subjected to extreme impacts or temperature changes, though this is common in all dial-type gauges.

7. **Replacement Parts Availability** While Ashcroft parts are widely available, older models may require sourcing from specialized suppliers, which could delay repairs.

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The **Ashcroft 251490A02B3 (1490 Series, 3 PSI Pressure Gauge)** is a **high-quality, reliable choice** for applications requiring precise low-pressure measurements. Its durability, accuracy, and ease of use make it ideal for industrial, commercial, or laboratory settings where consistent performance is critical. However, its **narrow pressure range (0-3 PSI)** limits its applicability to high-pressure systems, and **maintenance requirements** (such as calibration) should be factored into long-term costs.

If your use case aligns with its specifications such as monitoring air pressure in HVAC, pneumatic tools, or compressed air systems this gauge is a **strong recommendation**. For high-pressure needs or environments with extreme conditions, consider a different model or brand.

- You need an accurate, durable 3 PSI pressure gauge for low-pressure applications.

- You prioritize reliability and brand reputation (Ashcroft).

- Your system s pressure range matches or is below 3 PSI.

- Your application requires pressures significantly higher than 3 PSI.

- You are working in an environment where extreme vibrations, corrosive chemicals, or temperature fluctuations could compromise its performance.

- You seek a budget-friendly option and can tolerate slightly lower accuracy.

For most **low-pressure, industrial, or commercial applications**, this Ashcroft gauge is a **solid, long-term investment** that will provide dependable service with proper maintenance.

Details:

Shipping: We currently only ship to USA buyers. Ashcroft 251490A02B3# 1490 Series Pressure Gauge, to 3psi: Use this Gauge measure pressure from 10 inH2O 15 psi. Capable of measuring pressure from 10inH2O to 15psi, the gauge delivers reliable readouts. Untitled Document, Ashcroft 251490A02B3# 1490 Series Pressure Gauge, to 3psi: model: Order No:251490A02B3#: Keep an eye on devices with low pressure using this gauge.

Constructed with a glass-filled Pennsylvania case, beryllium copper diaphragm and brass socket for rugged strength. Brand: Ashcroft, model: 251490A02B3#, Order No: condition: NEW. Case Material Glass-filled Pennsylvania. Socket Material Brass.

part #: 251490a02b3 prices

• $15.26-$34.00

specifications pressureswitchiz:

• brand: Ashcroft
• mpn: 251490a02b3
• part type: Pressure Gauge

offer pressureswitchiz:

• options: Ship-to-home
• sold: 0
• started: March 20, 2026
• availability: In Stock
• quantity: 1

general pressureswitchiz:

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

shipping pressureswitchiz:

• service: Standard, Expedited
• type: Fixed
• cost: $20.00
• class: Standard, Expedited
• transit: 4-7 Days

payments pressureswitchiz:

• wallet: Google-pay
• other
• credit card: Discover

returns pressureswitchiz:

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

seller pressureswitchiz:

• rating: 99.5%
• city: Wilmington, North Carolina
• # reviews: 2484

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