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

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The black steel-cased pressure gauge is a robust mechanical pressure measuring instrument commonly used in various industrial sectors. As a reliable choice for pressure monitoring, it combines durability, practicality, and cost-effectiveness, making it a preferred solution for industries in China and beyond. Trusted by many suppliers, this gauge ensures precise pressure measurement in critical processes.

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Constructed from high-quality black carbon steel or stainless steel with a protective blackening treatment, this pressure gauge offers exceptional mechanical protection against dust, splashes, and environmental corrosion. Its design caters specifically to the demands of industrial environments, ensuring reliable performance in challenging conditions.

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With a broad measuring range, the gauge effectively measures from vacuum (-0.1MPa) to medium and high pressures (up to 0~60MPa or higher). Its strong resistance to temperature fluctuations and vibrations guarantees stable operation, making it an essential tool for industries looking for dependable monitoring solutions. The internal mechanism utilizes elastic elements such as Bourdon tubes to accurately translate pressure changes into pointer movements, eliminating the need for external power sources.

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Ease of installation and maintenance are key features of this pressure gauge, which ensures consistent performance, excellent readability, and an extended service life. As a vital component for safe and efficient system monitoring, this pressure gauge is manufactured by reputable suppliers, affirming its quality and reliability for users in China and globally.

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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 and Advantages
πŸ’° 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 β€” it operates immediately upon connection, incurring no energy costs. Durable and reliable, with a low failure rate, repair or replacement costs are far lower than intelligent digital instruments.
πŸ›‘οΈ 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 β€” ideal for harsh working environments. Based on the Bourdon tube principle of mechanical transmission, it ensures extremely high stability. No complex electronic components means it is unaffected by electromagnetic interference, with strong tolerance to temperature and humidity changes.
πŸ”§ 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 1/8", 1/4", 3/8", and 1/2" specifications, and can be provided with PT (BSPT/ZG), BSP (G/PF), NPT, and other thread standards per customer needs β€” greatly enhancing system integration flexibility.
πŸ“ Wide Range of Applications with Multiple Sizes Dial size covers seven specifications ranging from 40mm (1.5") to 200mm (8"), suitable for embedding into compact equipment panels or use on large units and remote monitoring dashboards. This meets the full range of pressure monitoring needs, from fine pneumatic control to heavy-duty hydraulic systems.
Typical Application Fields
βš™οΈ Industrial Hydraulic and Pneumatic Control Systems
πŸ”© Compressors, Pump Valves, and Pipeline Pressure Monitoring
🌊 Water Supply, Heating, and Air Conditioning Systems
🏭 Energy, Chemical, Manufacturing Process Detection
πŸš’ Firefighting Equipment and Safety Monitoring Systems
Frequently Asked Questions
Q What thread standards are available for this pressure gauge?
This pressure gauge supports multiple 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 specifications can be arranged based on customer requirements to ensure compatibility with different piping systems.
Q Does this pressure gauge require any power supply or wiring to operate?
No. This is a fully 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 environments where electrical power is unavailable or undesirable.
Q Is this gauge suitable for outdoor or harsh industrial environments?
Yes. The black carbon steel case and ring provide effective protection against dust, water splashes, mild corrosion, and physical impacts. The gauge is designed to perform reliably under demanding conditions, including varying temperatures and humidity levels typical of industrial settings.
Q What dial sizes are available for this series of pressure gauges?
The dial size ranges across seven specifications, from 40mm (1.5") up to 200mm (8"). This wide selection allows the gauge to be used in compact equipment panels as well as large industrial units or remote monitoring dashboards, covering a full spectrum of pressure monitoring applications.
Q What are the main materials used in the internal components of this gauge?
The Bourdon tube (sensing element) and movement are both made of brass, which offers excellent corrosion resistance and mechanical durability. The pointer is made of aluminum alloy for lightweight precision, while the dial plate is white aluminum with black graduations for clear readability.
Q In which industries is this pressure gauge most commonly used?
This gauge is widely used across industries including industrial hydraulic and pneumatic control systems, compressor and pump valve monitoring, water supply and HVAC systems, energy and chemical processing, manufacturing process detection, as well as firefighting equipment and safety monitoring systems.

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