OIL FILLED PRESSURE GAUGE | PM-E.VN

What Is an Oil Filled Pressure Gauge?

An Oil Filled Pressure Gauge is a pressure measuring instrument specifically designed for systems exposed to heavy vibration, pulsating pressure, or harsh operating conditions. The gauge is filled with glycerin or silicone oil to stabilize pointer movement and protect internal mechanical components.

Compared to standard dry pressure gauges, oil filled gauges provide more accurate readings and longer service life in demanding industrial environments.

Advantages of Oil Filled Pressure Gauges

These anti-vibration pressure gauges are widely used thanks to several important benefits:

• Excellent vibration dampening performance
• Reduced measurement errors
• Improved durability of internal moving parts
• Prevention of condensation inside the lens
• Stable operation under fluctuating pressure conditions
• Suitable for air, water, steam, oil, and gas applications
• High corrosion resistance with stainless steel construction

The oil-filled design makes the instrument ideal for continuous operation systems and high-vibration environments such as air compressors, pumps, and industrial machinery.

Main Construction Components

An oil filled pressure gauge consists of several key parts working together to ensure accurate pressure measurement:

Gauge Case

Typically manufactured from Stainless Steel 304 or Stainless Steel 316 for durability and corrosion resistance.

Dial Face

Clearly marked pressure scale for easy reading.

Pointer

Displays the actual pressure value detected inside the system.

Bourdon Tube

The primary sensing element that reacts to pressure changes and generates mechanical movement.

Movement Mechanism

Transfers motion from the Bourdon tube to the pointer.

Dampening Oil

Glycerin or silicone oil is used to minimize vibration and protect internal mechanisms.

Working Principle

When pressure enters the gauge through the connection port, it acts on the Bourdon tube causing slight deformation.

This movement is transferred through the internal mechanism and converted into pointer rotation on the dial face.

The oil inside the gauge stabilizes pointer movement, minimizes vibration, and improves reading accuracy in high-vibration environments.

Technical Specifications

• Dial sizes: 63 mm / 80 mm / 100 mm / 160 mm
• Pressure ranges: 2 bar to 40 bar or higher upon request
• Materials: Stainless Steel 304 / Stainless Steel 316
• Connection types: Threaded or flanged
• Mounting styles: Bottom mount, back mount, offset mount
• Protection standards: IP67, IP68
• Accuracy classes: 1.0 / 1.6 / 2.5
• Maximum operating temperature: 180°C
• Suitable media: Water, air, steam, oil, gas

Industrial Applications

Oil filled pressure gauges are widely applied in:

• Pneumatic systems
• Steam pipelines
• Hydraulic systems
• Chemical plants
• HVAC systems
• Water treatment facilities
• Oil & gas industries
• Food and pharmaceutical factories
• Industrial air compressors
• High-pressure pumping systems

These gauges are ideal for applications requiring continuous pressure monitoring and stable operation.

Common Types of Pressure Gauges

In addition to oil filled pressure gauges, the market also offers many other pressure gauge types such as:

• Dry pressure gauges
• Stainless steel pressure gauges
• Brass connection pressure gauges
• Back mount pressure gauges
• Flanged pressure gauges
• Vacuum pressure gauges
• Compound pressure gauges
• Pneumatic pressure gauges
• Water pressure gauges
• Low pressure mbar gauges

Each type is designed to meet different industrial environments and technical requirements.

PM-E.VN – Trusted Supplier of Genuine Pressure Gauges

PM-E.VN – Phuc Minh Engineering specializes in supplying industrial pressure instruments, valves, and piping accessories for factories and industrial projects in Vietnam.

All pressure gauges distributed by PME are directly imported from Japan, Korea, and Europe, meeting modern industrial technical standards.

We are currently a partner of leading brands such as:

• YAMAMOTO KEIKI
• WIKA
• WISE

Why Choose PM-E.VN?

• Genuine imported products
• Full CO-CQ documentation
• Professional technical support
• Competitive pricing for projects and distributors
• Wide range of pressure ranges and connection types
• Fast nationwide delivery

Our experienced engineering team is ready to help customers select the most suitable models for industrial systems, HVAC applications, water treatment plants, and production lines.

Related Products

• Differential Pressure Gauge
• Compound Pressure Gauge
• Oil Filled Pressure Gauge
• Vacuum Pressure Gauge
• Diaphragm Pressure Gauge
• Water Pressure Gauge
• Pneumatic Pressure Gauge
• Low Pressure mbar Gauge
• Brass Connection Pressure Gauge
• Industrial Differential Pressure Gauge

Contact Us for Technical Support & Quotation

📧 Email: info@pm-e.vn
☎ Hotline: +84 902 720 814 – +84 907 450 506 – +84 902 601 875
🌐 www.pm-e.vn

PM-E.VN is committed to supplying high-quality pressure gauges that meet technical requirements for industrial systems, HVAC applications, food factories, pharmaceutical plants, and specialized pressure monitoring systems.