Pressure gauge, vacuum gauge

1. Product Overview

Pressure gauges and vacuum gauges are instruments used to measure the pressure of fluids (liquids or gases) inside pipelines or tanks.

• Pressure Gauge: Measures positive pressure (above atmospheric pressure).
• Vacuum Gauge: Measures negative pressure (below atmospheric pressure).
• Compound Gauge: A combined type that can measure both negative and positive pressure on the same dial.

2. Standard Technical Specifications

3. Why Use Glycerin-Filled Gauges in Fuel Systems?

In pumping stations, glycerin-filled gauges provide significant benefits:

• Anti-vibration needle: Pump operation generates high vibration, causing the needle to oscillate. Glycerin dampens movement, ensuring accurate readings.
• Protects internal mechanism: Lubricates gears, reduces friction, and prevents wear, extending gauge lifespan.
• Prevents condensation: Stops moisture from fogging the glass or corroding internal components.

4. Key Features

• Bourdon tube sensor: High-sensitivity stainless steel or brass Bourdon tube provides instant pressure response.
• Safety design: Equipped with a blow-out disk at the back to prevent glass rupture under sudden overpressure.
• Temperature resistance: Operates reliably between -20°C and +60°C.
• Dual units: Dial typically displays both bar and psi or kg/cm² simultaneously.

5. Practical Applications

• Pump discharge line: Monitors working pressure to prevent pump overload or pipeline blockage.
• Pump suction line: Vacuum gauges check suction pressure to detect clogged strainers or fuel shortage.
• Pressure tanks: Ensures safe monitoring of internal tank pressure to prevent explosion hazards.
• Filtration systems: Installed before and after filters to track pressure drop, indicating when cleaning is required.