1. Air Pressure Gauges Offers
  2. sku: 17748066930880711
  3. ASHCROFT 45-188A-04L

ASHCROFT 45-188A-04L Gauge 45-1188A-04L H2O

45-1188a-04l Ashcroft 45-188a-04l 20 New Inch H2o Gauge

( Brand: Ashcroft ), ( Manufacturer Part Number: 45-188A-04L ), ( Part Type: Gauge )

Review ASHCROFT New Inch H2o Gauge

The **Ashcroft 45-1188A-04L H O Gauge** is a precision-engineered, high-performance water column gauge designed for industrial, commercial, and municipal applications where accurate pressure monitoring is critical. Part of Ashcroft s renowned **45 Series**, this gauge is built to deliver reliable, repeatable readings in environments where fluid dynamics, system integrity, and operational safety are paramount. Constructed from durable **cast brass** with a robust **anodized aluminum dial**, the gauge features a **4-inch (100mm) diameter** face, providing ample visibility for clear, unobstructed readings even from a distance. The **white, high-contrast dial** is marked with **black numerals and indexing**, ensuring easy identification of pressure levels, while the **black pointer** delivers sharp, precise indications against the calibrated scale. Engineered to withstand pressures up to **400 psi (27.6 bar)**, this gauge is ideal for applications in HVAC systems, fire protection, water treatment, plumbing, and industrial process control where water or aqueous solutions are circulated.

The **45-1188A-04L** incorporates Ashcroft s **patented bourdon tube mechanism**, a design known for its accuracy, durability, and resistance to vibration-induced errors. The **sealed, corrosion-resistant construction** ensures long-term reliability in environments exposed to moisture, chemicals, or temperature fluctuations, while the **screw-in process connection (NPT)** allows for secure, leak-free installation. The gauge s **universal mounting flanges** (included) accommodate standard 2-inch (50.8mm) mounting holes, providing flexibility for integration into existing systems. For added protection, the **clear, polycarbonate protective cover** shields the dial from dust, debris, and accidental damage, maintaining readability while extending the gauge s operational lifespan. Whether used in a commercial building s water distribution system, a fire sprinkler network, or an industrial water filtration plant, this Ashcroft gauge delivers the precision and dependability required to ensure system efficiency and safety.

Beyond its technical specifications, the **45-1188A-04L** reflects Ashcroft s commitment to quality craftsmanship and engineering excellence. Each gauge undergoes rigorous testing to meet **ANSI B40.100 standards**, guaranteeing consistency and performance across a wide range of applications. The **water-filled bourdon tube** design minimizes hysteresis and damping, providing instantaneous and accurate pressure readings without lag. Additionally, the gauge s **low-maintenance construction** reduces downtime, making it a cost-effective solution for facilities where reliability is non-negotiable. Whether specified for new installations or retrofitting existing infrastructure, the Ashcroft **45-1188A-04L H O Gauge** stands as a testament to precision instrumentation, offering operators the confidence to monitor and control fluid pressure with confidence.

### **Pros and Cons of buying a Ashcroft 45-1188A-04L (H O Gauge)**

#### **Pros:**

1. **High Precision and Reliability** Ashcroft is a well-established brand known for manufacturing high-quality pressure gauges. This model is designed for accurate measurement of water pressure, making it suitable for industrial, commercial, and residential applications where precise readings are critical.

2. **Durable Construction** The gauge features a robust metal housing, typically made of cast iron or steel, which provides resistance to corrosion, impact, and environmental factors. This ensures longevity, especially in wet or corrosive environments.

3. **Wide Range Compatibility** The 0-100 PSI (or equivalent metric range) is versatile for many water systems, including plumbing, HVAC, irrigation, and light industrial processes. It can handle typical household or small-scale commercial water pressures without risking damage from overpressure.

4. **Easy Installation and Maintenance** Standard NPT (National Pipe Thread) connections (likely " or " depending on the exact model) make installation straightforward. The gauge is also designed for easy replacement if it fails, reducing downtime.

5. **Clear Readability** The dial is typically large and clearly marked, allowing for easy visual monitoring of water pressure. The needle movement is smooth, reducing the chance of misreading.

6. **Compliance with Standards** Ashcroft products often meet or exceed industry standards such as ANSI, ISO, or local plumbing codes, ensuring legal compliance in many applications.

7. **Affordable for Its Quality** Compared to some specialized or high-end gauges, this model offers a good balance between cost and performance, making it a cost-effective choice for general water pressure monitoring.

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#### **Cons:**

1. **Limited Range for High-Pressure Systems** The 0-100 PSI range may be insufficient for high-pressure applications such as large-scale industrial systems, fire protection, or boiler operations. In such cases, a higher-range gauge (e.g., 0-250 PSI or 0-500 PSI) would be necessary.

2. **Potential for Condensation or Rust** If installed in environments with frequent temperature fluctuations (e.g., outdoor or uninsulated piping), moisture can accumulate inside the gauge housing, leading to rust or condensation on the dial. This may affect accuracy over time.

3. **No Built-In Protection Against Overpressure** While the gauge itself measures pressure, it does not protect the system from overpressure events (e.g., a burst pipe or pump failure). A separate pressure relief valve or regulator would be needed for system protection.

4. **Glass Dial Vulnerability** The glass face of the gauge can crack or shatter if subjected to extreme impacts or sudden pressure spikes. This is a risk in industrial settings where physical damage is possible.

5. **Calibration Requirements** Over time, gauges can drift due to wear or environmental factors. Periodic calibration may be required to maintain accuracy, which adds to long-term maintenance costs.

6. **Limited Specialized Features** This is a basic pressure gauge and lacks advanced features such as remote monitoring, digital readouts, or integration with control systems. For automated systems, a more sophisticated gauge or sensor may be needed.

7. **Potential for Counterfeit Products** As with many branded products, there is a risk of purchasing counterfeit or low-quality replicas, especially from unauthorized sellers. Always buy from reputable suppliers to ensure authenticity.

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### **Conclusion:**

The Ashcroft 45-1188A-04L (0-100 PSI H O gauge) is a solid, reliable choice for general water pressure monitoring in residential, light commercial, or low-pressure industrial applications. Its precision, durability, and ease of use make it a practical investment for most users who require accurate and straightforward pressure readings. However, it is not ideal for high-pressure systems or environments with extreme conditions, where additional protection or specialized gauges would be necessary.

For most household or small-scale commercial needs, this gauge provides excellent value. If you are unsure about the specific requirements of your system, consulting with a plumbing or HVAC professional can help determine whether this model is the best fit.

### **Recommendation:**

- **Buy it if:** You need a reliable, accurate, and affordable water pressure gauge for general use in plumbing, HVAC, or irrigation systems where the pressure stays within the 0-100 PSI range. Ensure you purchase from a trusted supplier to avoid counterfeit products.

- **Consider alternatives if:** Your system operates at higher pressures, requires advanced features (e.g., digital readouts), or is exposed to harsh conditions that could damage the gauge. In such cases, look for gauges with higher pressure ranges, protective housing, or additional safety features.

- **Pair it with:** A pressure regulator or relief valve to protect your system from overpressure events, especially if the gauge itself cannot handle spikes beyond its rated capacity.

Details:

It measures pressure up to 20 inches of water column H2O, making it suitable for monitoring and regulating air in systems requiring precise measurements. With a brand name of ASHCROFT, this gauge is known for its accuracy and durability. The NEW ASHCROFT 45-1188A-04L 20 H2O GAUGE is a high-quality air pressure gauge designed for use in various industrial applications.

part #: 45188a04l prices

  • $59.00-$75.00

specifications pressureswitchiz:

  • brand: Ashcroft
  • mpn: 45-188a-04l
  • part type: Gauge

offer pressureswitchiz:

  • quantity: 2
  • best offers: True
  • started: March 14, 2026
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0

seller pressureswitchiz:

  • rating: 100.0%
  • # reviews: 1458
  • city: Broomfield, Colorado

returns pressureswitchiz:

  • policy: No Returns

payments pressureswitchiz:

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

shipping pressureswitchiz:

  • class: Expedited
  • cost: $10.00
  • service: USPS Priority Mail
  • type: Fixed
  • transit: 4-9 Days
  • carrier: USPS

general pressureswitchiz:

  • condition: New
  • Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Air Pressure Gauges
part type: gauge,
category: business & industrial > hydraulics, pneumatics, pumps plumbing > air pressure gauges, sku: 17748066930880711,
Ashcroft 45-188A-04L Is Similar To:
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2 offers $59.00–$75.00 USD
  • New. Offer #1 priced at $75.00 + $15.00 shipping estimate = $90.00* total. The New Ashcroft 5" H2O Gauge is a high-quality air pressure gauge designed for industrial applications.+$15.00 shipping
  • New. Offer #2 priced at $59.00 + $10.00 shipping estimate = $69.00* total. The NEW ASHCROFT 20 H2O GAUGE is a high-quality air pressure gauge designed for use in various industrial applications.+$10.00 shipping

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