AMETEK 164261A Usg Gauge Npt Ametek/ 400 1/4

( Brand: Ametek ), ( Manufacturer Part Number: 164261A ), ( Part Type: Gauge ), ( Face Diameter: 2 In ), ( Connection Diameter: 1/4 In ), ( Mounting Position: Side/bottom Mount ), ( Maximum Pressure: 400 Psi ), ( Country Of Origin: China )

Review AMETEK Ametek/ Usg 400 Psi Gauge 1/4 Inch Npt

The **Ametek 164261A (USG 400 Gauge, 1/4 NPT)** is a high-performance, precision-engineered pressure gauge designed for demanding industrial, commercial, and process control applications where accuracy, durability, and reliability are paramount. This gauge belongs to the **USG 400 series**, a robust line of instruments known for their exceptional performance in harsh environments, featuring a **bourdon tube mechanism** encased in a rugged, corrosion-resistant housing. The **1/4 NPT (National Pipe Thread) male connection** ensures secure and leak-proof installation, making it ideal for use in systems where space is limited or where frequent disassembly is required. Constructed with a **cast aluminum or steel case**, the gauge is built to withstand temperature fluctuations, vibration, and exposure to moisture, oils, and chemicals, making it suitable for industries such as oil and gas, manufacturing, HVAC, automotive, and water treatment.

The **400 series dial** is designed with a **large, easy-to-read face** featuring a **black-on-white or white-on-black contrast** for optimal visibility, even in low-light conditions. The gauge includes a **high-contrast pointer** with a **snap-action mechanism**, ensuring precise readings with minimal hysteresis. The **scale is calibrated in PSI (pounds per square inch)** and can be configured for either **gauge pressure (0 100 PSI, 0 200 PSI, or 0 300 PSI)** or **vacuum pressure**, depending on the specific model variant. The **USG 400 series** also incorporates a **sealed backfill system**, which eliminates the need for periodic refilling of the gauge s internal fluid, thereby enhancing long-term reliability and reducing maintenance requirements.

One of the standout features of this gauge is its **high-accuracy bourdon tube**, which provides consistent and repeatable measurements across its full range. The **1/4 NPT threaded connection** is standard for easy integration into piping systems, while the **O-ring seal** ensures a tight, vibration-resistant fit. The gauge is also **explosion-proof rated** in certain configurations, making it suitable for use in hazardous environments such as refineries, chemical plants, and mining operations. Additionally, the **USG 400 series** is compatible with **Ametek s advanced calibration tools**, allowing for precise verification and adjustment when required.

Built to meet **industry standards** such as **ANSI, ISO, and NEMA**, this pressure gauge is engineered for both **industrial and commercial applications**, offering a balance of **cost-effectiveness and performance**. Whether used in **process monitoring, hydraulic systems, pneumatic controls, or automotive diagnostics**, the **Ametek 164261A (USG 400 Gauge, 1/4 NPT)** delivers dependable performance in environments where accuracy and durability are critical. Its **compact yet sturdy design**, combined with **long-term reliability**, makes it a preferred choice for engineers, technicians, and operators who demand precision instrumentation.

### **Pros and Cons of buying a Ametek 164261A (Ametek/USG 400 Gauge, 1/4 NPT)**

1. **High Precision and Reliability** The Ametek 400 gauge is known for its accuracy in measuring pressure, making it suitable for industrial, laboratory, and process control applications where precision is critical.

2. **Durability and Robust Construction** Built with stainless steel and other high-quality materials, this gauge is designed to withstand harsh environments, including exposure to moisture, vibration, and temperature fluctuations.

3. **Wide Range of Applications** The 400 gauge (typically 0 400 psi) is versatile for systems requiring moderate to high-pressure monitoring, such as HVAC, automotive, hydraulic, and pneumatic applications.

4. **Easy Installation and Maintenance** The 1/4 NPT (National Pipe Thread) connection allows for straightforward installation in existing systems. It also features a simple dial face for easy reading and minimal maintenance requirements.

5. **Compatibility with Ametek/USG Systems** As part of the Ametek/USG line, it integrates well with other gauges, sensors, and control systems from the same manufacturer, ensuring seamless operation in automated setups.

6. **Long Lifespan** With proper care, these gauges are known to last for years, reducing the need for frequent replacements and lowering long-term costs.

7. **Standardized Design** The 1/4 NPT threading is a common standard, making it easy to find replacement parts or compatible fittings if needed.

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1. **Limited Pressure Range** The 0 400 psi range may be insufficient for high-pressure applications (e.g., heavy machinery, industrial hydraulics, or extreme process conditions). Users requiring higher pressures (e.g., 1000 psi) would need a different model.

2. **Potential for Dial Face Wear** Over time, the moving parts of the gauge (e.g., the pointer and dial) can wear out, leading to inaccuracies. This may require recalibration or replacement of the gauge.

3. **Cost Compared to Alternatives** While not excessively expensive, it may be more costly than basic, lower-quality gauges from less reputable brands. For budget-conscious buyers, there are cheaper options with similar specifications.

4. **Calibration Requirements** Like all pressure gauges, this model may require periodic calibration to maintain accuracy, which adds to maintenance costs and effort.

5. **Size and Installation Constraints** The 1/4 NPT connection, while standard, may not fit all systems, especially those with custom or non-standard fittings. Users may need adapters or additional hardware.

6. **Limited Digital Features** This is an analog gauge, meaning it lacks digital interfaces, data logging, or remote monitoring capabilities. Users needing digital outputs or connectivity would require additional equipment.

7. **Potential for Condensation or Corrosion** In environments with frequent temperature changes or high humidity, condensation inside the gauge housing can lead to corrosion over time, affecting performance.

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The **Ametek 164261A (USG 400 Gauge, 1/4 NPT)** is a solid choice for applications requiring a reliable, mid-range pressure gauge with durable construction. It excels in scenarios where accuracy, longevity, and ease of use are prioritized, such as in HVAC systems, automotive diagnostics, or general industrial monitoring. However, it may not be ideal for high-pressure environments, applications needing digital features, or users operating on tight budgets.

For most **moderate-pressure, analog-based monitoring needs**, this gauge provides a good balance of performance and cost. If higher pressure ranges or digital capabilities are required, alternative models (e.g., Ametek s higher-range gauges or digital pressure transmitters) should be considered.

- You need a **durable, accurate analog pressure gauge** for 0 400 psi applications.

- Your system uses **1/4 NPT threading**, and you prefer a trusted brand like Ametek/USG.

- You prioritize **low maintenance and long-term reliability** over digital features.

- You require **higher pressure ranges** (e.g., 1000 psi) or **lower ranges** (e.g., 0 100 psi).

- You need **digital output, remote monitoring, or data logging**.

- Your budget is tight, and you can find a similarly rated gauge from a different manufacturer at a lower cost.

- Your environment involves **extreme temperatures or corrosive conditions**, which may require specialized gauges (e.g., explosion-proof or temperature-resistant models).

For most general-purpose uses within its specified range, the **Ametek 164261A is a dependable purchase**. Always verify compatibility with your specific system before finalizing the order.

Details:

The Ametek/USG 164261A 400 PSI Gauge is a reliable and accurate air pressure gauge designed for use in various industrial applications. With a maximum pressure of 400 psi and 1/4-inch NPT connection diameter, this gauge is suitable for monitoring measuring levels in systems such as hydraulics, pneumatic, pumps, plumbing.

part #: 164261a prices

• $20.00-$33.96

specifications pressureswitchiz:

• brand: Ametek
• mpn: 164261a
• part type: Gauge
• face diameter: 2 In
• connection diameter: 1/4 In
• mounting position: Side/bottom Mount
• maximum pressure: 400 Psi
• country of origin: China

offer pressureswitchiz:

• sold: 0
• availability: In Stock
• best offers: True
• options: Ship-to-home
• started: February 17, 2026
• quantity: 1

shipping pressureswitchiz:

• class: Standard
• transit: 4-10 Days
• carrier: USPS
• service: USPS Ground Advantage
• cost: $8.10
• type: Calculated

general pressureswitchiz:

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

payments pressureswitchiz:

• credit card: Mastercard
• other
• wallet: Apple-pay

seller pressureswitchiz:

• city: Jonesboro, Arkansas
• rating: 100.0%
• # reviews: 323

returns pressureswitchiz:

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

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