Oxygen Service Clean Gauges

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Brief Description

Oxygen Service Clean Gauges are pressure and temperature instruments that have undergone rigorous, specialized cleaning and certification processes to remove all traces of oil, grease, or organic materials, preventing combustion when exposed to high-pressure pure oxygen.

In-depth Overview

Standard industrial gauges contain residues (lubricating oil, cutting fluid) that are harmless in air but pose a severe fire or explosion risk in the presence of high-concentration or high-pressure oxygen. Our Oxygen Service (O2) Clean instruments are subjected to multi-stage cleaning using specialized degreasing agents and purified water, followed by assembly in a cleanroom environment. Each cleaned gauge is clearly marked and supplied with a Certificate of Conformance to standards like ASME B40.1 Level IV or CGA G−4.4, guaranteeing safety for oxygen systems.

Specification

Parameter	Details
Cleaning Standard	ASME B40.1 Level IV / CGA G−4.4
Wetted Parts Material	Stainless Steel 316L (recommended) or Brass/Monel
Pressure Range	0 to 400 bar (depending on application)
Case Type	Dry, often with a dedicated oxygen case color (e.g., green or blue)
Connection Type	Standard NPT or BSPP (or specialized CGA connections)
Certification	Certificate of Conformance provided with each unit
Sealing Material	Viton or PTFE (materials compatible with oxygen)
Packaging	Sealed plastic bag to prevent post-cleaning contamination

Applications

Medical Gas Systems: Monitoring oxygen cylinder pressure, manifold pressure, and patient supply lines in hospitals.
Welding and Cutting: Gauges installed on high-pressure oxygen regulators for industrial processes.
Aerospace and Diving: Equipment used for oxygen storage and high-purity gas delivery.
Chemical Oxidation Processes: Monitoring oxygen feed lines in manufacturing.

Key Advantages

Crucial Safety: Eliminates the risk of catastrophic combustion caused by trace hydrocarbons in the presence of oxygen.
Regulatory Compliance: Meets strict national and international safety codes for oxygen handling equipment.
High Purity: Ensures the integrity and purity of the gas flow is maintained for sensitive applications.
Documentation: Supplied with traceability documents guaranteeing the cleaning procedure was performed correctly.

Payment and Shipping

We accept payments via T/T and L/C. Due to the specialized cleaning and certification steps, lead times are typically 2-3 weeks for oxygen-cleaned items. Each gauge is individually double-bagged and hermetically sealed immediately after cleaning to prevent contamination during storage and shipping, and is clearly labeled for oxygen service.

Frequently Asked Questions

Q: Why can't I just clean a standard gauge myself?
A: Proper oxygen cleaning requires specific solvents, ultrasonic cleaning equipment, and a cleanroom environment to avoid re-contamination by airborne particles or residues. Without these controls and subsequent certification, the gauge is not safely qualified for oxygen service.

Q: Does the certificate guarantee the gauge is still clean after installation?
A: No. The certificate guarantees cleanliness at the time of packaging. It is the user's responsibility to handle the gauge only with clean gloves and install it into a system that is equally clean and free of oils/grease to maintain its oxygen service readiness.

Q: Are all oxygen gauges stainless steel?
A: Stainless steel is often preferred due to its inherent cleanliness, but brass is also commonly used. Crucially, the internal components and sealing materials must be approved for oxygen service, regardless of the housing material.

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Oxygen Service Clean Gauges Manufacturers

Wuxi Huihua Special Instrumentation Co., Ltd. was established in December 2001, the registered capital is 5 million yuan, the existing staff of more than 50 small and medium-sized joint-stock enterprises.
The company specialises in the production of various types of special instruments, alternative to the localisation of imported instruments.To seismic pressure gauge, seismic electric contact pressure gauge, stainless steel pressure gauge, diaphragm corrosion-resistant pressure gauge, marine pressure gauge and other series as the main products. On the basis of field instruments, we have developed various kinds of pressure transmitters, pressure controllers, digital pressure gauges and so on. There are more than 30 series and 3000 specifications. Products are widely used in petroleum, chemical, paper, metallurgy, mining, chemical fibre, electric power, food, environmental protection, rubber and plastic, hydraulics and many other industries, and more than 2,000 domestic customers to establish a friendly relationship with the national large and medium-sized enterprises to establish a good partnership, won the majority of users praise, and set up a corporate brand image.