Specialty Gas Distribution Equipment for Sioux Falls

Specialty gases can be only as serviceable as the equipment used to distribute them. The purity and precision these gases deliver stand a good chance of being reduced in the absence of the required pressure and flow control and absent the provisions to substantiate gas use.

Although the standard is that compressed gases, by virtue of their general properties, are best delivered in high-pressure gas cylinders, regulating that pressure in normal use is oftentimes considered only after the fact. One must contend with significant differences between cylinder regulators designed for oxy-fuel cutting and welding, most purge gas applications, and specialty gas use.

The PurityPlus® gas pressure-reducing regulators and flowmeters you’ll get from A-OX Welding Supply deliver a level of quality in materials, design, and assembly that differentiates them from the usual industrial gas equipment. While pricier, this equipment tends to have a value that goes well beyond its price. PurityPlus® regulators, for instance, generally have diaphragms made of stainless steel, not rubber. Rubber diaphragms have a propensity to absorb moisture and impurities, then off-gas such contaminants as the cylinder supply pressure drops. This can wreak havoc in carrier gas flow and instrument response.

No less disruptive is the problem of crawl. As the pressure in a gas cylinder is made to drop, the pressure on the diaphragm is also reduced, and the outlet pressure can rise. To counterbalance this action and contain its effects, it is seriously recommended that a two-stage PurityPlus® regulator be employed. The manufacturer presets the first-stage pressure reduction, typically between 300-500 psig, while the user is allowed to  monitor the final outlet pressure in the second stage. Setting an intermediate pressure dampens the crawl effect by the second stage to ensure that  it’s almost eliminated until the cylinder pressure falls below 150-200 psig.

Contrast this with an industrial gas single-stage regulator. As a result of the single-stage design, the single diaphragm experiences a uninterrupted lessening of supply pressure accompanied by a gradual but uninterrupted rise in outlet pressure that could fluctuate as much as 10-15 psig.

These are only a couple of examples proving that the right gas also demands the right gas equipment. Contact us online or get in touch with us, A-OX Welding Supply, at 605-336-1125. As crucial as the right gases, equipment, and options are, we give you considerably more than that. We also have the answers you need to questions about specialty gas control – when you need them.