China China Suppliers Factory Black Steel Oxygen Pressure Gauge 0–140 Bar / 2000 PSI with ¼ NPT Radial Mount Suppliers, Factories

Introducing our black iron shell oxygen gauge, a top-quality oil-free pressure measurement instrument designed specifically for oxygen applications. This versatile gauge, also referred to as a black iron shell oxygen pressure gauge, is ideal for a range of uses including oxygen cylinders, welding, cutting, medical oxygen supply, and chemical processes. Manufactured in China by reliable suppliers, our factory ensures that each unit meets stringent safety and performance standards, Our black iron casing offers exceptional corrosion and impact resistance, making it suitable for both industrial and outdoor environments. With a durable glass crystal, this gauge features oil-free technology that prevents explosion risks associated with oil and oxygen mixtures. The pressure sensing elements utilize high-quality phosphor bronze or copper alloy Bourdon tubes, complemented by copper alloy movement and connectors for enhanced reliability, This oxygen gauge provides clear pressure indication with a pointer and dial that displays both MPa and PSI units, ensuring easy readability of pressure values. Our copper connectors come with various threading options, including NPT, BSP, and ZG, equipped with sealing gaskets for airtight and leak-proof operation. Trust our black iron shell oxygen gauge for effective oxygen pressure display and safety monitoring in various demanding applications, brought to you by trusted suppliers in China's manufacturing industry

Product Description

Product Specifications

CaseBlack Steel / Steel
Size40mm (1.5"), 50mm (2"), 60mm (2.5"), 75mm (3"), 100mm (4")
Ring (Cover)Black Steel / Chromed
WindowGlass
PointerAluminum Alloy, Black Finished
ConnectionBrass
Connection LocationLower, Center Back, Lower Back
Thread1/8", 1/4", 3/8", 1/2"; PT(BSPT, ZG), BSP(G, PF), NPT etc.
Element (Bourdon Tube)Brass
MovementBrass
Dial PlateWhite Aluminum with Black Graduations

Core Features and Advantages

Oil-Free Safety

Dedicated oxygen gauge components are treated with oil-free processes. This eliminates combustion risks from grease reacting with high-pressure oxygen, ensuring core safety.

Cost-Effectiveness

Black iron powder-coated shell offers a budget-friendly price without compromising on durability, providing excellent rust and corrosion resistance for conventional working conditions.

Flexible Installation

Supports NPT, BSP, and ZG threads. Compact design fits oxygen cylinder valves and welding equipment directly, reducing the need for extra adapters.

Low Maintenance

Simple structure with few wear parts. Requires only periodic calibration. Cost-effective for mass instrument configuration like gas stations and medical supply centers.

Typical Application Fields

Medical Oxygen Supply

Hospital central oxygen supply and cylinder monitoring.

Chemical/Metallurgical

Industrial pressure measurement for oxygen pipelines and vessels.

Cylinder Filling

Safety monitoring during oxygen gas filling processes.

Frequently Asked Questions

Q Why is an oil-free process necessary for this oxygen pressure gauge?

High-pressure oxygen reacts violently with hydrocarbons (grease/oil), posing combustion risks. Oil-free treatment ensures absolute safety during operation.

Q What mounting options and connection locations are available?

This gauge supports Lower, Center Back, and Lower Back connection locations for flexible pipe and panel installation.

Q Can this gauge be used in outdoor environments?

Yes. The black steel casing features a rust-resistant powder coating, protecting it from moisture and dust in industrial or outdoor conditions.

Q What dial sizes and thread standards are supported?

Sizes range from 40mm to 100mm. Threads include 1/8", 1/4", 3/8", and 1/2" under NPT, BSP, and PT standards.

Q What materials are used in the sensing elements?

High-quality brass is used for the movement, connector, and Bourdon tube to ensure accuracy and reliable performance.

Q What are the maintenance requirements?

Maintenance is minimal, requiring only periodic calibration. Simple internal structures make component replacement very cost-effective.

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