CE Certification 2.5″ Black Steel Mechanical Pressure Gauge – Air Manometer from China Suppliers & Factory for Accurate Pressure Measurement Manufacturer, Suppliers

The black steel-cased pressure gauge is an essential mechanical pressure measuring instrument widely utilized in various industrial sectors. Manufactured by leading suppliers in China, this gauge offers exceptional robustness, durability, and reliability, making it a preferred choice for effective pressure monitoring across numerous industrial applications, Crafted from high-quality black carbon steel or stainless steel with a specialized blackening treatment, this gauge ensures excellent mechanical protection, dust and splash resistance, as well as the ability to withstand environmental corrosion and physical impacts. This design makes it particularly suitable for harsh industrial settings, With a broad measuring range that extends from vacuum (-0.1MPa) to medium and high pressure (up to 60MPa or more), this pressure gauge exhibits strong environmental adaptability and stable operation, even under varying temperature and vibration conditions. Its internal mechanism employs elastic elements such as Bourdon tubes, which convert pressure into a precise angular displacement of the pointer without needing an external power supply, Engineered for straightforward installation and maintenance, the pressure gauge guarantees stable performance, outstanding readability, and a long service life, making it an indispensable component for safe and efficient system monitoring. Explore our factory's offerings in China for high-quality pressure gauges tailored to meet your industrial needs

Product Description

Product Specifications
Case Black Steel
Size 63mm (2.5")
Ring (Cover) Black Steel
Window Glass
Pointer Aluminum Alloy
Connection Brass
Connection Location Lower
Thread 1/8", 1/4", 3/8", 1/2"; PT (BSPT, ZG), BSP (G, PF), NPT etc.
Element (Bourdon Tube) Brass
Movement Brass
Dial Plate White Aluminum with Black Graduations
Core Features and Advantages
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Economic Efficiency and Cost Advantages
Its simple structure, mature materials (carbon steel), and advanced manufacturing process make it one of the most competitively priced pressure gauge types. A purely mechanical structure requires no power supply, wiring, or configuration — it operates immediately upon connection to the system, incurring no energy costs. It is durable, reliable, and has a low failure rate. Even if damaged, the cost of repair or replacement is far lower than that of intelligent digital instruments.
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Rugged, Durable and Highly Reliable
The black carbon steel casing effectively protects against dust, splashes, and mild corrosion, and withstands general physical impacts and shocks, making it suitable for harsh working environments. Its reliable internal structure, based on the Bourdon tube principle of mechanical transmission, ensures extremely high stability. The absence of complex electronic components makes it unaffected by electromagnetic interference, with strong tolerance to temperature and humidity changes.
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Flexible Installation and Connection Adaptability
Supports multiple installation positions (bottom inlet, middle rear inlet, bottom rear inlet) to meet different system layout requirements. Threaded interfaces are compatible with various specifications such as 1/8", 1/4", 3/8", and 1/2", and can be provided with PT (BSPT/ZG), BSP (G/PF), NPT, and other thread standards according to customer needs, greatly enhancing system integration flexibility.
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Wide Range of Applications with Multiple Sizes
The dial size covers seven specifications ranging from 40mm (1.5") to 200mm (8"), suitable for embedding into compact equipment panels or using on large units or remote monitoring dashboards. This meets the full range of pressure monitoring needs, from fine pneumatic control to heavy-duty hydraulic systems.
Typical Application Fields
  • ⚙️ Industrial Hydraulic and Pneumatic Control Systems
  • 🔩 Compressors, Pump Valves, and Pipeline Pressure Monitoring
  • 🌊 Water Supply, Heating, and Air Conditioning Systems
  • ⚗️ Energy, Chemical, Manufacturing Process Detection
  • 🚒 Firefighting Equipment and Safety Monitoring Systems
Frequently Asked Questions (FAQ)
Q What thread standards are available for this pressure gauge?
This pressure gauge supports a wide range of thread standards including PT (BSPT/ZG), BSP (G/PF), and NPT, with connection sizes of 1/8", 1/4", 3/8", and 1/2". Custom thread configurations can be provided based on customer requirements to ensure seamless system integration.
Q Is this pressure gauge suitable for outdoor or harsh environments?
Yes. The black carbon steel casing provides effective protection against dust, water splashes, mild corrosion, and physical impacts. It demonstrates strong environmental adaptability, tolerating variations in temperature and humidity, making it well-suited for demanding industrial and outdoor applications.
Q Does this gauge require a power supply or electronic configuration?
No. This is a purely mechanical pressure gauge based on the Bourdon tube principle. It requires no power supply, wiring, or electronic configuration. It operates immediately upon connection to the system, making it ideal for installations where electrical infrastructure is limited or unavailable.
Q What dial sizes are available for this pressure gauge series?
The dial size covers seven specifications ranging from 40mm (1.5") to 200mm (8"). This allows the gauge to be used across a variety of applications — from compact equipment panels to large industrial units and remote monitoring dashboards.
Q What industries or systems is this pressure gauge typically used in?
This gauge is widely used in industrial hydraulic and pneumatic control systems, compressors, pump valves and pipelines, water supply and HVAC systems, energy and chemical process detection, as well as firefighting equipment and safety monitoring systems.
Q What are the main materials used in the construction of this gauge?
The case and ring cover are made of black steel, while the Bourdon tube (sensing element), movement, and connection fitting are all made of brass. The pointer is aluminum alloy, the window is glass, and the dial plate is white aluminum with black graduations — ensuring both durability and clear readability.

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