Description
Pressure, Temperature & Humidity Measurement
The DF6143 Low Pressure Oxygen Gauge (NSN: 6685-00-527-6156) is a military-grade oxygen pressure gauge designed for demanding defense and aerospace applications.
Manufactured to AN6026-1B and MIL-DTL-6019E, it provides reliable pressure measurement from 0–500 psig for critical oxygen systems where accuracy, durability, and compliance are essential. With NSN 6685-00-527-6156, the DF6143 is suitable for military procurement, overhaul programs, and OEM equipment.
| ESI Part Number | Part Number | NSN | Range |
|---|---|---|---|
| DF6143 | AN6026-1B | 6685-00-527-6156 | 0-500 psig |
| MIL-DTL-6019E |
Technical Specifications
| Application | Designed for critical oxygen service requiring safe, accurate pressure monitoring |
|---|---|
| Pressure Range | 0–500 psig, suitable as a low-pressure oxygen pressure gage |
| Dial Size | 1-1/2-inch dial with a 180° scale for clear, easy-to-read pressure indication |
| Military Specifications | Manufactured in accordance with AN6026-1B and MIL-DTL-6019E military specifications |
| Cleaning | LOX cleaned (liquid oxygen cleaned) to support safe use in oxygen service applications |
| Process Connection | Equipped with a 1/8-inch NPT male process connection in accordance with MIL-P-7105 |
| Packaging | Packaged to applicable U.S. military preservation and packaging standards |
| Quality Management | Manufactured under an ISO 9001:2015 certified quality management system |
| CAGE Code | 0TSK1 |
Typical Applications
- Military oxygen systems
- Ground support equipment
- Aircraft servicing
- Oxygen charging carts
- Defense maintenance depots
- Military vehicles
- Aviation support equipment
- Naval oxygen systems
- Aerospace test equipment
Quality & Compliance
Each DF6143 oxygen pressure gauge is manufactured in accordance with strict MIL-spec standards. Every unit undergoes testing and inspection to ensure:
- Accuracy and reliability in field conditions
- Resistance to harsh environmental factors
- Long service life in demanding applications
- Full compliance with required military specifications
- Certification supplied with each unit
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Frequently Asked Questions
What is a Dial Indicating Pressure Gage?
A dial indicating pressure gage is a mechanical instrument used to measure and display the pressure of gases or liquids using a circular dial and pointer. Most dial pressure gages, including the DF6143, use a Bourdon tube sensing element that converts pressure into mechanical movement. These gauges are valued for their reliability, ease of reading, and ability to operate without an external power source, making them ideal for military, aerospace, industrial, and oxygen service applications.
Why is Oxygen Cleaning Important?
Oxygen cleaning is a specialized process that removes oils, grease, dust, and other combustible contaminants from components intended for oxygen service. Even small amounts of hydrocarbon contamination can ignite in high-pressure oxygen environments, creating a serious fire or explosion hazard. Oxygen-cleaned pressure gauges, such as the DF6143, are prepared to meet stringent cleanliness requirements, ensuring safe operation in military oxygen systems, aircraft servicing equipment, and breathing air applications.
What Does MIL-DTL-6019E Mean?
MIL-DTL-6019E is a U.S. military detail specification that defines the design, performance, materials, testing, and quality requirements for pressure gauges used in military applications. Products manufactured to this specification must meet rigorous standards for accuracy, durability, environmental resistance, and reliability. Compliance with MIL-DTL-6019E helps ensure that the DF6143 performs consistently in demanding defense and aerospace environments.
What Is AN6026-1B?
AN6026-1B is a military drawing and part specification that defines the configuration, dimensions, performance characteristics, and interchangeability requirements for specific aircraft pressure gauges. Equipment built to the AN6026-1B standard is designed to provide compatibility with military systems and support maintenance and replacement without requiring equipment modifications. The DF6143 is manufactured to meet the requirements of this military specification.
How Does a Bourdon Tube Pressure Gauge Work?
A Bourdon tube pressure gauge measures pressure using a curved metal tube that is sealed at one end. As pressure enters the tube, it attempts to straighten slightly. This movement is transferred through a series of precision gears and linkages that rotate the pointer across the dial face, providing an accurate pressure reading. Bourdon tube gauges are widely used because they are durable, highly reliable, require no electrical power, and perform well in harsh operating environments.
Why Is an NSN Important?
A National Stock Number (NSN) is a standardized 13-digit identification number used by the U.S. Department of Defense and NATO supply systems to identify approved products. The DF6143 carries NSN 6685-00-527-6156, allowing military organizations, government agencies, and defense contractors to quickly identify, procure, manage, and replace the correct component through established logistics systems. Using an NSN helps reduce procurement errors and ensures compatibility with approved military equipment.
