Specialty Gas Distribution Equipment for Auburn

Specialty gases are only as usable as the equipment employed to distribute them. The purity and precision these gases are known for may well be tempered if not sustained by proper pressure and flow control and absent the means to scrutinize gas use.

Though it’s generally understood that compressed gases, given their nature, are shipped in high-pressure gas cylinders, regulating that pressure in typical use is often an afterthought. The truth is, there are many differences between cylinder regulators designed for oxy-fuel cutting and welding, typical purge gas applications, and specialty gas use.

The PurityPlus® gas pressure-reducing regulators and flowmeters we provide at Spec Air Specialty Gases give you the kind of quality in materials, design, and assembly that differentiates them from conventional industrial gas equipment. While pricier, this equipment usually has a value that far surpasses its price. PurityPlus® regulators, to illustrate the point, most often have diaphragms made of stainless steel, not rubber. Rubber diaphragms have a natural tendency to soak up moisture and impurities, then off-gas the contaminants as the cylinder supply pressure falls. This can impede carrier gas flow and instrument response.

Equally annoying is the matter of crawl. As the pressure in a gas cylinder is brought down, the pressure on the diaphragm is also lessened, and the outlet pressure can go higher. To offset this action and contain its effects, it is heartily recommended that a two-stage PurityPlus® regulator be used. The manufacturer presets the first-stage pressure reduction, usually between 300-500 psig, giving users the ability to  control the final outlet pressure in the second stage. Setting an intermediate pressure dampens the crawl effect by the second stage to the point that  it’s pretty much 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 continuous lowering of supply pressure accompanied by an unhurried but continuous rise in outlet pressure that may vacillate as much as 10-15 psig.

These are just a couple of examples showing why the right gas also demands the right gas equipment. Contact us online or call us, Spec Air Specialty Gases, at . As crucial as the right gases, equipment, and options are, we offer so much more than that. We also have the answers you need to questions about specialty gas control – when you need them.