Overview
The Wika 4217250 (632.34 series) is a low-pressure capsule gauge engineered for accurate measurement of very low pressures in industrial and process applications. With a 4.5″ dial size and dual-scale range of 0–100 inches of water (0–57 oz/in²), this gauge delivers reliable performance even in demanding environments. The capsule element design is optimized for sensitive pressure measurement, while the 316L stainless steel wetted components ensure corrosion resistance and longevity.
Key Features
- Capsule measurement principle: Ideal for very low pressures with high sensitivity and repeatability
- Dual-scale dial: Reads in both inches of water (InH2O) and ounces per square inch (oz/in²)
- Robust construction: Black glass-fiber reinforced thermoplastic (POCAN) case with solid front and blowout-back safety design
- 316L SS wetted parts: Corrosion-resistant for harsh ambient conditions
- Lower mount connection: 1/4″ NPT threaded port for easy installation
- ASME B40.100 compliance: Grade A accuracy (±2.5% of span)
Technical Specifications
The Wika 4217250 meets industry standards and provides the following technical capabilities:
- Pressure range: 0–100 inches H₂O (0–57 oz/in²)
- Dial size: 4.5″ (115 mm)
- Accuracy: ±2.5% of span (ASME B40.100 Grade A)
- Connection: 1/4″ NPT lower mount
- Wetted material: 316L stainless steel
- Case material: Black fiberglass-reinforced thermoplastic (POCAN)
- Design: Dry case, solid front / blowout back safety design
- Standard: Designed to ASME B40.100
Typical Applications
The Wika 632.34 pressure gauge is commonly used in industrial automation, HVAC systems, low-pressure gas and air monitoring, and process instrumentation where precise measurement of very low pressures is critical. Its robust case and corrosion-resistant materials make it suitable for harsh ambient conditions, including environments with aggressive chemical exposure or vibration.
Compatibility & Replacements
Compatible With
- Industrial process monitoring systems requiring low-pressure measurement
- HVAC and pneumatic control systems
- Gas analysis and laboratory instrumentation
- Pressure monitoring in filter systems and blowers
- Any system with standard 1/4″ NPT threaded ports
Replaces / Drop-In Replacement For
The Wika 4217250 is a direct replacement for other 632.34 series gauges with identical specifications (4.5″ dial, 100 InH2O range, 1/4″ NPT lower mount). Verify exact part number and pressure range with your system integrator before ordering to ensure seamless compatibility.
Works With
- Industrial automation control systems (Allen-Bradley, Siemens, Mitsubishi, Omron, etc.)
- Pneumatic and hydraulic systems
- HVAC control architectures
- Any measurement instrumentation panel or enclosure with 1/4″ NPT ports
