Specialty Gas Distribution Equipment for Denver

Specialty gases can be no more usable than the equipment employed to distribute them. The purity and precision these gases are known for may well be reduced in the absence of the necessary pressure and flow control and without the wherewithal to monitor gas consumption.

While few would contest that compressed gases, by virtue of their prevalent characteristics,should be delivered in high-pressure gas cylinders, regulating that pressure in typical use is oftentimes put on the back burner. There are considerable differences between cylinder regulators intended for oxy-fuel cutting and welding, general purge gas applications, and specialty gas use.

The PurityPlus® gas pressure-reducing regulators and flowmeters we have for you at Rocky Mountain Air Solutions give you a high degree of quality in materials, design, and assembly that sets them apart from ordinary industrial gas equipment. While pricier, this equipment generally provides a value that far surpasses its price. PurityPlus® regulators, for example, typically have diaphragms made of stainless steel, not rubber. Rubber diaphragms have a natural tendency to absorb moisture and impurities, then off-gas the contaminants as the cylinder supply pressure dips. This can be very detrimental to proper carrier gas flow and instrument response.

Just as troubling is the issue of crawl. As the pressure in a gas cylinder is reduced, the pressure on the diaphragm is also reduced, and the outlet pressure can go higher. To counterbalance this action and curb its effects, it is strenuously advised that a two-stage PurityPlus® regulator be employed. The manufacturer presets the first-stage pressure reduction, generally around 300-500 psig, while the user is allowed to  adjust the ultimate outlet pressure in the second stage. Setting an intermediate pressure lessens the crawl effect by the second stage to the point that  it’s just about non-existent until the cylinder pressure comes down 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 continuous lessening of supply pressure in association with a slow but continuous increase in outlet pressure that may vacillate as much as 10-15 psig.

These are but a couple of examples proving that the right gas also demands the right gas equipment. Contact us online or get in touch with us, Rocky Mountain Air Solutions, at (303) 777-6671. As far as we’re concerned, customer service must do even more than provide the finest gases, equipment, and options. Customer service also encompasses being responsive to your questions – about specialty gas control or any other industry topic. And we’re famous for being responsive.