OEM 2.5 Black Steel Mechanical Pressure Gauge - Reliable Air Manometer from China Suppliers & Factory Suppliers, Factories

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The black steel-cased pressure gauge, manufactured in China, is a highly reliable mechanical pressure measuring instrument widely utilized in various industrial sectors. Renowned for its robustness, durability, practicality, and cost-effectiveness, this pressure gauge has become a preferred choice among suppliers for effective pressure monitoring in numerous industrial applications.

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Crafted with an outer casing made of black carbon steel or stainless steel featuring a blackening treatment, this gauge offers excellent mechanical protection against dust and moisture. Its resilient design allows it to withstand environmental corrosion and physical impacts, ensuring suitability for challenging industrial environments.

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This pressure gauge is specifically designed to meet industrial requirements and boasts a comprehensive measuring range, covering everything from vacuum (-0.1MPa) to medium and high pressures (such as 0~60MPa or higher). It exhibits strong environmental adaptability and maintains stable operation even under varying temperature and vibration conditions. Utilizing elastic elements like Bourdon tubes, the internal mechanism efficiently converts pressure into pointer angular displacement without the need for an external power supply.

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Easy to install and maintain, this pressure gauge guarantees stable performance, superior readability, and an extended service life, making it an indispensable component for safe and efficient system monitoring in any industrial setup. Choose our China-based factory for high-quality pressure gauges that meet all your industrial needs.

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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 & Advantages
Economic Efficiency

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, incurring no energy costs. It is durable, reliable, and has a low failure rate.

Rugged & Reliable

The black carbon steel casing effectively protects against dust, splashes, and mild corrosion. Based on the Bourdon tube principle of mechanical transmission, it ensures extremely high stability, unaffected by electromagnetic interference, showing good tolerance to temperature and humidity changes.

Flexible Connection

Supports multiple installation positions (bottom inlet, middle rear inlet, bottom rear inlet). 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.

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, meeting diverse pressure monitoring needs.

Typical Application Fields
Industrial Hydraulic & Pneumatic Control
Compressors, Pump Valves & Pipelines
Water Supply, Heating & Air Conditioning
Energy, Chemical & Manufacturing Process
Firefighting Equipment & Safety Monitoring
Frequently Asked Questions (FAQ)
Q What is the default size and material of this pressure gauge?
The standard size is 63mm (2.5") with a durable Black Steel case and ring. The internal connection, Bourdon tube, and movement are made of high-quality Brass.
Q What thread standards are available for connection?
We support multiple thread sizes including 1/8", 1/4", 3/8", and 1/2". They are compatible with PT (BSPT, ZG), BSP (G, PF), and NPT thread standards.
Q Does this pressure gauge require an external power supply?
No, it features a purely mechanical structure based on the Bourdon tube principle. It operates immediately upon system connection without requiring any wiring or power source.
Q What dial sizes can be ordered for different systems?
We offer seven dial specifications ranging from 40mm (1.5") up to 200mm (8"), allowing integration into compact panel displays or large industrial dashboards.
Q Is this gauge suitable for harsh industrial environments?
Yes. The black carbon steel casing protects against dust, splashes, and mild corrosion. The mechanical design is also immune to electromagnetic interference, ensuring reliable performance.

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