Specialty Gas Distribution Equipment for Southern California

Specialty gases can be no more efficacious than the devices used to propagate them. The purity and precision these gases provide are likely to be lessened if not sustained by the required pressure and flow control and absent the means to substantiate gas usage.

While not many would argue that compressed gases, because of the properties most possess,ought to be delivered in high-pressure gas cylinders, regulating that pressure in conventional use is frequently treated as a matter of secondary importance. It’s a fact that there are noteworthy distinctions 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 sold by WestAir Specialty Gases and Equipment offer a high degree of quality in materials, design, and assembly that calls them out from conventional industrial gas equipment. Though pricier, this equipment tends to have a value that far outstrips its price. PurityPlus® regulators, to illustrate the point, generally have diaphragms made of stainless steel instead of rubber. Rubber diaphragms have a natural tendency to soak up moisture and impurities, then off-gas the contaminants as the cylinder supply pressure slides downward. This can wreak havoc in carrier gas flow and instrument response.

Equally troubling 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 rise. To counterbalance this action and limit its effects, it is heartily recommended that a two-stage PurityPlus® regulator be used. The manufacturer presets the first-stage pressure reduction, typically in the range of 300-500 psig, letting users  monitor the ultimate outlet pressure in the second stage. Setting an intermediate pressure reduces the crawl effect by the second stage to ensure that  it’s almost non-existent until the cylinder pressure falls below 150-200 psig.

For comparative purposes, look at an industrial gas single-stage regulator. As a result of the single-stage design, the single diaphragm undergoes a uninterrupted lowering of supply pressure accompanied by a relaxed but uninterrupted increase in outlet pressure that may fluctuate as much as 10-15 psig.

These are just a couple of examples proving that the right gas also demands the right gas equipment. Contact us online or get in touch with us, WestAir Specialty Gases and Equipment, at 866-WESTAIR. 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.