Specialty Gas Distribution Equipment for Beaumont

Specialty gases really aren’t any more workable than the devices used to disperse them. The purity and precision these gases offer stand a good chance of being tempered in the absence of proper pressure and flow control and lacking the wherewithal to keep tabs on gas usage.

Since few would contest that compressed gases, by virtue of their general properties, should be transported in high-pressure gas cylinders, managing that pressure in normal use is oftentimes an afterthought. There are important distinctions between cylinder regulators created for oxy-fuel cutting and welding, the usual purge gas applications, and specialty gas use.

The PurityPlus® gas pressure-reducing regulators and flowmeters carried by Coastal Welding Supply deliver a level of quality in materials, design, and assembly that differentiates them from common industrial gas equipment. While more expensive, this equipment usually has a value that far outstrips its price. PurityPlus® regulators, mind you, most often use diaphragms made of stainless steel, not rubber. Rubber diaphragms are inclined to absorb moisture and impurities, then off-gas these contaminants as the cylinder supply pressure slides downward. This can have a negative effect on carrier gas flow and instrument response.

No less annoying is the issue of crawl. As the pressure in a gas cylinder is made to fall, the pressure on the diaphragm is also reduced, and the outlet pressure can go higher. To compensate for this action and curb its effects, it is strongly advised that a two-stage PurityPlus® regulator be used. The manufacturer presets the first-stage pressure reduction, typically in the range of 300-500 psig, leaving the user to  monitor the final outlet pressure in the second stage. Setting an intermediate pressure lessens the crawl effect by the second stage so  it’s nearly a done deal until the cylinder pressure slips back below 150-200 psig.

Compare this to an industrial gas single-stage regulator. As a result of the single-stage design, the single diaphragm undergoes a uninterrupted reduction in supply pressure as well as a relaxed but uninterrupted rise in outlet pressure that might change as much as 10-15 psig.

These are just a couple of examples that illustrate why the right gas also demands the right gas equipment. Contact us online or call us, Coastal Welding Supply, at 800-852-4177. We not only have the right gases and the right equipment with the right options for you, but we also have the right answers to any question you might have about specialty gas control.