Oxygen & Mixed Gas Equipment
Oxygen & Mixed Gas Equipment
Supplies and hardware for oxygen cleaning, hyper-filtering air, transferring and analyzing gas mixtures, and constructing blending and storing systems for specialty gas mixtures.
OXYGEN ANALYSES - All custom gas mixtures must be analyzed for oxygen content. This demands an accurate oxygen analyzer and a metering apparatus to deliver sampled gas to the instrument at proper flow rate and pressure. If common analyzers are back-pressured as little as 3 psi, significantly erroneous results can occur. Most GMC metering devices contain a pressure-reducing regulator and a flow-controlling element. Deluxe models provide gauges to visually monitor both pressure and flow rate. Simpler units that utilize one’s dive regulator as a pressure reducer are also offered. All products are delivered oxy-clean.
Hyper-Filtration for Nitrox Preparation
With the widespread popularity of Nitrox diving, numerous dive shops are mixing air with pure oxygen to produce saleable "enriched air" mixtures. For safe blending, compressed air of purity greater than normal Grade E must be used. Known as "Oxygen Compatible Air" or OCA, this gas is permitted to have no more than 0.1 mg / M3 of hydrocarbon contaminants, whereas Grade E scuba air can contain 50 times that amount (5 mg / M3). Some dive shops are able to produce OCA with their regular processing systems if the compressor, lubricant, moisture separators and filters all function absolutely flawlessly. Many other air systems cannot achieve air of this purity under any circumstances. To routinely obtain OCA, most shops reprocess their Grade E air by passing it through an addition special filter known as a Hyper-Filter, which are described below .
These special hi-tensile aluminum towers will accept ONLY specific Hyper-Filter cartridges which actually "recirculate" the gas through high-purity chemicals that remove even trace level hydrocarbons. These super-filtration systems also control the pressure and flow rate at which the gas moves through the chemicals, thereby assuring complete removal of finite contaminants. Each Hyper-Filter System consists of the tower(s) with filter cartridge(s) plus pressure-controlling priority regulator, flow governor, gauge and check valves, all mounted on an aluminum base plate. Double and single tower systems are available. This apparatus not only produces OCA, but also serves as a safety backup in case of an unforeseen compressor / filter failure which releases dangerously high levels of hydrocarbon-contaminated air!
These devices allow the interconnection of CGA gas outlet ports for cylinder charging or special diving applications. Each fitting has a CGA male outlet thread (same as a CGA tank valve outlet thread) on one end and NPT on the other. All are brass with a 3,000 psi rating.
Handling, processing, or mixing Nitrox or pure oxygen requires special equipment which is BOTH oxygen-compatible and oxygen-clean. Most such equipment will be made from brass or stainless steel with softgoods of 02-compatible polymers like Teflon or Kel-F. Many devices suitable for air cannot be used safely in high O2-environments. GMC offers a good selection of hardware for oxygen-related applications. Each item is delivered oxy-clean.
Oxygen and Inert Gas Transfillers. Yoke and DIN models.
Used to check the pressure within scuba tanks or to equalize the pressure between 2 cylinders containing Nitrox / O2. Equalizers have 2-foot teflon-lined / stainless steel hoses and bleeder vents. Models for both yoke and DIN tank valves are offered. Delivered oxy-clean. 3,200 psi service.
Equipment specifically for mixed gas/O2: brushes, Christolube 125, UV lights, media, chemicals and stickers.