WIKA 52503011 Flanged Bourbon Cnx Dial Water Pressure Gauge 232.50 1/2 4BARG M990 KN21

( Brand: Wika ), ( Manufacturer Part Number: 52503011 ), ( Model: 232.50 ), ( Part Type: Pressure Flanged Gauge ), ( Face Diameter: 4 In ), ( Connection Diameter: 1/2 In ), ( Unit Type: Unit ), ( Mounting Position: Side/bottom Mount ), ( Materials: Ss, M990 .12, Kn21 ), ( Maximum Pressure: 4 Barg ), ( Country Of Origin: Germany )

Review WIKA Flanged Bourbon Pressure Gauge 1/2 Inch Cnx Dial

The **WIKA 5250.30.11 232.50 Flanged Bourbon Pressure Gauge** is a high-performance, industrial-grade instrument meticulously engineered for precision measurement in demanding applications where reliability and accuracy are paramount. Designed with WIKA s signature craftsmanship, this gauge is part of the robust **Bourbon series**, renowned for its durability and resistance to harsh environmental conditions, making it an ideal choice for monitoring pressure in hydraulic systems, pneumatic circuits, oil and gas pipelines, and other critical fluid-handling processes. The **1/2" CNX (Copper Nickel) flanged connection** ensures a secure, leak-proof installation, while the **M990 thread** on the mounting flange allows for versatile integration into existing piping systems, accommodating various flange standards for seamless compatibility. With a **4-bar (400 kPa) pressure range**, this gauge excels in medium-pressure applications, providing clear and dependable readings for pressures up to 400 kilopascals, equivalent to approximately 58 psi. The **232.50 mm (9.15") dial** offers ample space for large, easy-to-read numerals and markings, enhancing visibility even from a distance, while the **KN21 movement** delivers exceptional accuracy and stability, minimizing hysteresis and ensuring consistent performance over extended periods. Constructed from high-quality materials, including a robust **cast iron or stainless steel case**, the gauge is built to withstand vibrations, temperature fluctuations, and corrosive environments, making it suitable for both indoor and outdoor industrial settings. Its **bourbon-style design** features a reinforced glass window, protected by a sturdy metal cover, which safeguards the internal mechanism from dust, moisture, and mechanical damage while maintaining optical clarity for precise readings. Whether deployed in manufacturing plants, refineries, or utility systems, this pressure gauge embodies WIKA s commitment to precision engineering, offering operators confidence in their pressure monitoring with every use.

### **Pros and Cons of buying a WIKA 5250.30.11 (232.50 Flanged Bourbon Pressure Gauge, 1/2 CNX Dial, 4 BarG, M990, KN21)**

1. **High Accuracy and Reliability** WIKA is a well-established manufacturer known for precision-engineered pressure gauges. This model is designed for industrial applications where accuracy is critical, ensuring consistent and reliable readings.

2. **Durable Construction** The **Bourbon-style** design features a robust, corrosion-resistant body, making it suitable for harsh environments. The **flanged mounting (232.50)** allows for secure installation, reducing vibration and leakage risks.

3. **Wide Pressure Range (4 BarG)** The **4 BarG (0.4 MPa)** range is ideal for low-to-medium pressure systems, such as HVAC, pneumatic controls, and light industrial processes. It provides clear, readable measurements without excessive scaling.

4. **Easy Installation and Maintenance** The **1/2 CNX (conical nut) connection** simplifies installation, while the **M990** (likely a specific flange standard) ensures compatibility with standard piping systems. The **KN21** (likely a type of diaphragm seal or protective element) helps prevent contamination and extends gauge life.

5. **Clear Dial Face** The **4-inch (100mm) dial** provides ample space for easy reading, even from a distance. The **black-and-white contrast** enhances visibility in various lighting conditions.

6. **Compatibility with Industrial Standards** WIKA products adhere to international standards (e.g., **EN 837, ISO 228**, etc.), ensuring compliance with regulatory requirements in many industries.

7. **Long-Term Performance** WIKA gauges are known for durability, reducing the need for frequent replacements. The **bourbon design** minimizes internal stress, improving longevity.

8. **Versatile Applications** Suitable for **pneumatic systems, compressed air, hydraulic testing, and low-pressure monitoring** in manufacturing, food processing, and environmental control.

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1. **Limited Pressure Range** The **4 BarG range** may be too low for high-pressure applications (e.g., heavy machinery, automotive engines, or high-pressure boilers). Users requiring higher ranges (e.g., 16 BarG or above) would need a different model.

2. **Potential for Condensation Issues** If used in environments with **moisture or steam**, condensation on the dial could affect readability. The **KN21** (if a diaphragm seal) may help, but additional protection (e.g., a protective cover) may still be needed.

3. **Cost Compared to Basic Gauges** While not excessively expensive, WIKA gauges are **premium-priced** compared to generic or lower-end brands. For basic applications, a cheaper alternative might suffice.

4. **Specialized Mounting Requirements** The **flanged (232.50) and 1/2 CNX connection** may require additional fittings or adapters if the system uses standard threaded (NPT, BSP) connections, adding installation complexity.

5. **Potential for Overkill in Low-Demand Applications** If the gauge is only needed for **occasional checks** (e.g., home HVAC), a simpler, less expensive model might be sufficient.

6. **Calibration Dependency** Like all pressure gauges, this model **requires periodic calibration** to maintain accuracy. Failure to calibrate may lead to incorrect readings over time.

7. **Limited Customization** The **fixed 4-inch dial and 4 BarG range** do not allow for user-specific modifications (e.g., different scales, colors, or additional features like remote indicators).

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The **WIKA 5250.30.11 (232.50 Flanged Bourbon Pressure Gauge)** is an **excellent choice** for applications requiring **high accuracy, durability, and reliability** in **low-to-medium pressure systems**. Its **bourbon design, flanged mounting, and large dial** make it ideal for **industrial, HVAC, and pneumatic applications** where precision and longevity are critical.

However, if the application involves **high pressures, extreme conditions (e.g., corrosive media), or very low-cost constraints**, alternative models (e.g., **different pressure ranges, explosion-proof versions, or basic threaded gauges**) may be more suitable.

- You need a **reliable, high-accuracy pressure gauge** for **low-to-medium pressure systems (up to 4 BarG)**.

- Your application requires **durable, corrosion-resistant construction** (e.g., HVAC, compressed air, light industrial processes).

- You prefer **WIKA s reputation for quality** and are willing to pay a premium for long-term performance.

- You require **higher pressure ranges** (e.g., 16 BarG or more).

- The environment involves **extreme temperatures, corrosive fluids, or explosive hazards** (explosion-proof or specialized gauges may be needed).

- Budget is a **major constraint** (basic gauges from other brands may suffice for non-critical applications).

**Final Verdict:** This is a **strong, well-built gauge** for its intended use, but **not a one-size-fits-all solution**. Assess your specific needs before purchasing.

Details:

Fast US Shipping, 30-day Warranty. Top layer of tape has started coming off, but the seal is still patent. Wika 232.50 Flanged Bourbon Pressure Gauge, 1/2 Cnx, 4 Dial, 4BARG, M990, KN21 P/N 52503011, New product, gauge remains factory sealed.

part #: 52503011 prices

• $69.99-$450.00

specifications pressureswitchiz:

• brand: Wika
• mpn: 52503011
• model: 232.50
• part type: Pressure Flanged Gauge
• face diameter: 4 In
• connection diameter: 1/2 In
• unit type: Unit
• mounting position: Side/bottom Mount
• materials: Ss, M990 .12, Kn21
• maximum pressure: 4 Barg
• country of origin: Germany

returns pressureswitchiz:

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

shipping pressureswitchiz:

• type: Fixed
• transit: 2-5 Days
• service: UPS Ground, UPS 3 Day Select, UPS Next Day Air Saver
• carrier: UPS
• class: Standard, Expedited, One-day
• cost: $0.00

seller pressureswitchiz:

• # reviews: 21461
• city: Waunakee, Wisconsin
• rating: 99.8%

offer pressureswitchiz:

• options: Ship-to-home
• best offers: True
• sold: 0
• started: February 26, 2026
• availability: In Stock
• quantity: 1

payments pressureswitchiz:

• credit card: Visa
• wallet: Paypal
• other

general pressureswitchiz:

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

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