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  3. SPAN 1521137

SPAN 1521137 Filled Water Pressure Gauge LFP220-100-PSI-G 2.5

1521137 Span Lfp220-100-psi-g Liquid Filled Pressure Gauge 0-100 Psi 2.5 Inch

( Brand: Span ), ( Manufacturer Part Number: 1521137 ), ( Part Type: Pressure Gauge )

Review SPAN Lfp220-100-psi-g Liquid Filled Pressure Gauge 0-100 Psi 2.5 Inch

The **Span 1521137 LFP220-100-PSI-G filled pressure gauge** is a high-performance, hermetically sealed instrument designed for precise and reliable measurement of air, gas, or hydraulic pressure within a range of 0 to 100 PSI. Engineered with durability and accuracy in mind, this gauge features a robust **2.5-inch dial face**, providing ample visibility for quick and easy reading in industrial, automotive, or mechanical applications. The **filled system** ensures long-term protection against corrosion, moisture, and temperature fluctuations, making it ideal for harsh environments where standard gauges may fail. Its **aluminum housing** is both lightweight and sturdy, offering resistance to impact and vibration while maintaining a clean, professional appearance. The gauge incorporates a **high-quality bourdon tube mechanism**, delivering consistent and repeatable measurements with minimal hysteresis, ensuring that operators can trust the readings for critical system monitoring. The **gauge glass** is reinforced with a durable polycarbonate lens, offering clarity and protection against scratches and debris, while the **black-on-white dial** provides excellent contrast for enhanced readability even in low-light conditions. This model is equipped with a **standard 1-inch NPT (National Pipe Thread) connection**, allowing for easy integration into existing piping systems, and its **filled design** eliminates the need for frequent maintenance or refilling, reducing downtime and operational costs. Whether used in HVAC systems, pneumatic tools, automotive brake lines, or industrial machinery, the Span 1521137 delivers dependable performance with a blend of precision engineering and practical durability, making it a trusted choice for professionals who demand reliability in their pressure measurement tools.

### **Pros and Cons of buying a Span 1521137 LFP220-100-PSI-G Filled Pressure Gauge (0-100 PSI, 2.5")**

#### **Pros:**

1. **Reliable Brand Reputation** Span Instruments is a well-established manufacturer known for producing high-quality, durable pressure gauges used in industrial, automotive, and HVAC applications. Their products are often preferred for long-term performance.

2. **Accurate and Precise Measurement** The gauge is calibrated for 0-100 PSI, ensuring consistent and reliable readings within its specified range. This is critical for applications requiring precise pressure monitoring, such as hydraulic systems, compressed air, or refrigeration circuits.

3. **Filled Dial Design** The "filled" (or "damped") gauge features a liquid or gas-filled system that smooths out fluctuations, reducing needle oscillation and providing more stable readings. This is particularly useful in systems with pulsating pressure (e.g., pneumatic tools or automotive brake systems).

4. **Durable Construction** The 2.5-inch dial size offers better visibility and a more robust build compared to smaller gauges. The housing is likely made of metal (e.g., brass or steel), which enhances resistance to corrosion and physical stress.

5. **Compatibility with Various Systems** The 100 PSI range makes it suitable for moderate-pressure applications, such as:

- Automotive brake systems

- HVAC refrigeration circuits

- Pneumatic tools and compressors

- Hydraulic systems (where pressures do not exceed 100 PSI)

- Industrial process monitoring

6. **Easy Installation and Replacement** Standard NPT (National Pipe Thread) or BSP (British Standard Pipe) connections are common for Span gauges, making it straightforward to install or replace in existing systems. The gauge likely includes a mounting bracket or flange for secure attachment.

7. **Long Service Life** With proper maintenance (e.g., regular calibration, protection from extreme temperatures, and avoiding overpressure), Span gauges are known to last for years, reducing the need for frequent replacements.

8. **After-Sales Support** Span Instruments offers customer service, calibration services, and replacement parts, which can be valuable if the gauge requires servicing or if a spare is needed.

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#### **Cons:**

1. **Limited Pressure Range** The gauge is only rated for 0-100 PSI. If your application requires higher pressures (e.g., 150 PSI or more), this gauge will not be suitable, and you may need a higher-range model (e.g., 0-200 PSI or 0-300 PSI). Conversely, if your system operates at very low pressures (e.g., below 10 PSI), the gauge may not provide sufficient resolution.

2. **Potential for Dial Face Wear** Over time, the glass or plastic dial face can become scratched or discolored due to exposure to sunlight, moisture, or abrasive particles. While this does not affect accuracy, it can reduce readability.

3. **Calibration Requirements** Like all pressure gauges, this unit may require periodic calibration to maintain accuracy, especially in critical applications. Calibration can be costly if done professionally, though Span gauges are generally easier to calibrate than some competitors.

4. **Size Constraints** The 2.5-inch dial is larger than some compact gauges (e.g., 1.5" or 2"), which may be a drawback in space-limited applications. However, the larger size also makes it easier to read at a distance.

5. **Potential for Leaks or Damage** If the gauge is subjected to extreme temperatures, overpressure, or physical impact, the sealing gaskets or housing may fail, leading to leaks or inaccurate readings. Always ensure the gauge is protected from such conditions.

6. **Cost Relative to Basic Gauges** While not excessively expensive, this is a mid-to-high-quality gauge. Basic or generic gauges (e.g., from lesser-known brands) may be cheaper but could lack the durability and precision of Span s products. The cost may not justify the purchase if the application does not demand high reliability.

7. **Compatibility with Specific Fluids** If the gauge is exposed to corrosive fluids (e.g., certain chemicals, saltwater, or acidic substances), the internal components (e.g., seals, springs) may degrade over time. Ensure the gauge is suitable for the fluids in your system.

8. **Limited Customization** Unlike some industrial gauges, this model may not offer customizable features such as different connection types, mounting styles, or additional sensors (e.g., temperature compensation). If you need specialized options, you may need to explore other models.

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### **Conclusion:**

The **Span 1521137 LFP220-100-PSI-G filled pressure gauge** is a solid choice for applications requiring a **reliable, accurate, and durable** pressure measurement in the 0-100 PSI range. Its filled-dial design reduces needle oscillation, making it ideal for systems with pressure fluctuations, while its 2.5-inch size ensures good visibility. The brand s reputation for quality and the gauge s compatibility with common industrial and automotive systems further strengthen its appeal.

However, if your application involves **higher pressures, corrosive environments, or extremely tight spaces**, you may need to consider alternatives. Additionally, while Span gauges are robust, they do require **proper installation, protection from overpressure, and occasional calibration** to maintain optimal performance.

### **Recommendation:** - **Buy this gauge if:**

- You need a **durable, accurate 0-100 PSI gauge** for automotive, HVAC, pneumatic, or light hydraulic systems.

- You prefer a **filled-dial design** for stable readings in fluctuating pressure environments.

- You value **brand reliability** and long-term performance over ultra-low-cost alternatives.

- The gauge fits your **mounting and connection requirements** (e.g., NPT/BSP threads).

- **Consider alternatives if:**

- Your system requires **pressures above 100 PSI** (opt for a higher-range gauge, e.g., 0-200 PSI).

- You need **extreme environmental resistance** (e.g., high-temperature, corrosive, or vacuum applications look for specialized gauges).

- Space is extremely limited (a smaller gauge, e.g., 1.5", may suffice).

- You require **custom features** (e.g., remote sensing, digital output, or unique mounting).

For most **moderate-pressure industrial, automotive, or HVAC applications**, this Span gauge is a **strong, cost-effective choice** that balances accuracy, durability, and ease of use. Always verify the **specific connection type, mounting needs, and environmental conditions** of your system to ensure compatibility.

Details:

Filling: Glycerin Liquid Filled. Span 1521137 LFP220-100-PSI-G Liquid Filled Pressure Gauge 0-100 PSI 2.5. Pressure Range: to 100 PSI. Status: New Surplus.

Notes: The gauge is in pristine, unused condition. Manufacturer: Span Thumbing Instrument Group. The box may show light shelf wear from storage, but the internal component is factory-fresh and ready for installation. Case Material: Style Nylon Corrosion Resistant.

Mounting Type: Panel Mount U-Clamp style. Part Number: 1521137. Item Condition. Packaging: Includes original manufacturers box.

Model Number: LFP220-100-PSI-G.

part #: 1521137 price

  • $74.95

specifications pressureswitchiz:

  • brand: Span
  • mpn: 1521137
  • part type: Pressure Gauge

offer pressureswitchiz:

  • options: Ship-to-home
  • best offers: True
  • sold: 0
  • availability: In Stock
  • started: April 9, 2026
  • quantity: 1

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  • policy: Returns Accepted
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  • time: 60 Days
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seller pressureswitchiz:

  • city: Utica, Michigan
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general pressureswitchiz:

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

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part type: pressure gauge,
category: business & industrial > hydraulics, pneumatics, pumps plumbing > air pressure gauges, sku: 18072968833862891,
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1 offer $74.95 USD
  • New – Open box. Offer #1 priced at $74.95 + $15.79 shipping estimate = $90.74* total. The box may show light shelf wear from storage, but the internal component is factory-fresh and ready for installation. Part Number: .+$15.79 shipping

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