Pressure Gauge Inquiry

A Pressure Gauge is an essential instrument used in boilers, heaters, and process piping systems to monitor and indicate the internal pressure of steam, gas, or liquid. It plays a critical role in ensuring safe and efficient operation by providing real-time pressure readings, helping operators maintain optimum working conditions and prevent hazardous overpressure situations.

In industrial boilers and heating systems, pressure gauges are typically mounted on steam drums, headers, pipelines, or pressure vessels to continuously measure operating pressure. These gauges are available in a variety of types such as Bourdon Tube Pressure Gauges, Capsule Gauges, and Diaphragm Gauges, depending on the application requirements.

Constructed from robust stainless steel, brass, or phosphor bronze, pressure gauges are designed to withstand high temperatures, vibrations, and corrosive media. They ensure accurate pressure measurement across a wide range, from vacuum levels to very high pressures.

By providing reliable readings, pressure gauges not only safeguard equipment from damage but also optimize fuel efficiency, process performance, and overall system safety.

Technical Highlights

  • Measuring Range: Available from vacuum (-1 bar) to very high pressures (up to 1000 bar) depending on design.
  • Gauge Type:
    • Bourdon Tube Gauge (commonly used in boilers & piping for steam and gases).
    • Diaphragm & Capsule Gauges (for low-pressure or corrosive media).
  • Dial Size: Standard sizes 50mm, 63mm, 100mm, 150mm, 250mm for clear visibility.
  • Accuracy Class: ±0.5% to ±2.5% of FSD (Full-Scale Deflection) as per IS/EN Standards.
  • Connection: Bottom or back entry; threaded connection (BSP/NPT) or flanged as per system design.
  • Material of Construction:
    • Case & Bezel: Stainless Steel / Mild Steel / ABS Plastic.
    • Bourdon Tube: Stainless Steel / Brass / Phosphor Bronze.
    • Window: Shatter-proof Glass or Polycarbonate.
  • Filling Option: Available in dry type or glycerin/silicone oil filled gauges to dampen vibration and pulsation in boilers & process lines.
  • Temperature Resistance: Withstands high operating temperatures up to 200°C with appropriate syphon or cooling element in steam applications.
  • Safety Features: Blow-out back design for operator safety under overpressure conditions.
  • Compliance: Conforms to IS 3624 / EN 837-1 standards for industrial use.
  • Applications:
    • Monitoring steam pressure in boilers.
    • Measuring oil/gas pressure in heaters.
    • Controlling process pressure in pipelines, tanks, and vessels.
    • Suitable for power plants, refineries, chemical, and textile industries.