Three formats, one PSA core, one decision. Where is the nitrogen consumed — at plant pressure, in cylinders, or on a remote site with no building? This page walks the standard plant generator, the high-pressure cylinder-fill system, and the containerized turnkey package — comparison first, decision tree second, questions to ask third — so a vendor-supplied gas line item turns into an on-site capital asset with a calculated payback.
Tap any type to jump to its page. The Decision Guide further down asks three questions that funnel the spec to one of these.
One PSA core — carbon molecular sieve takes oxygen out, nitrogen passes — in three formats. The air you already make becomes a process gas.
At plant pressure (standard generator), in cylinders (high-pressure fill system), or on a remote site with no building (containerized).
Required purity, peak flow, and current monthly nitrogen spend. Size to peak, never average — the buffer smooths swings but doesn't erase them.
A line item the customer buys every month becomes an owned generator with a calculated payback — often 18-30 months at steady spend.
Desiccant dryer to ‑40°F PDP plus a coalescing filter, on every format. A refrigerated dryer destroys the CMS beds in months, not years.
Every PSA install needs the dryer, coalescing filter, buffer vessel, and on-line purity analyzer — selling the generator alone misses spec.
Distributor-facing reading. The trade-off column is the one that closes the loop — every type buys something and gives something up. Knowing what each type costs you is how the right one gets on the quote without a callback.
Reading the brand bench column — the bar shows how many of SPC's tier slots (Industry Leader · Emerging · Economical · adjacent) carry an option at that product type. A deep bench means a price-driven and a spec-driven option both close cleanly; a narrow bench means the available brands map closely to the technical requirements and the comparison stops being a tier choice. Nitrogen generation runs narrow by design — South-Tek anchors every format, with Ozen Air and Great Lakes Air as second-tier alternates only on the standard-pressure format.
Draw a line from the customer's answer at the top to the type name at the bottom. This is the page distributors screenshot and send to a customer the day before a quote call — so the customer comes prepared with the answers, and the call is about the brand and the budget, not the basics.
Three structural rules behind the tree: feed-air treatment is not optional — a desiccant dryer to ‑40°F PDP plus a coalescing filter upstream of every PSA install, on every format (refrigerated dryers destroy CMS beds). Size to peak, never average — the buffer vessel smooths swings but does not erase them, and a generator that can't hit peak ends in supplemental cylinder deliveries that erode the payback case. Quote the system, not the generator — every PSA install needs the dryer, the coalescing filter, the buffer vessel, and the on-line purity analyzer; selling the generator alone leaves the customer with capital that can't hit spec.
The format is decided by where the nitrogen leaves the system — plant pressure, cylinder pressure, or remote site. After that, every PSA sizing conversation is the same three numbers: purity, peak flow, monthly spend.
If the customer answers most of these at the first call, the second call is the quote. If they can't answer any, the nitrogen generation are rarely the only spec gap — flag it and push for a site walk.
End-Use is the layer where compressed air stops being compressed air and becomes something else — nitrogen, vacuum, pneumatic motion, the actual output the plant was built to produce. Every layer upstream of this one exists to deliver clean, dry, properly-pressured air to this boundary; everything downstream of this boundary is whatever the customer is making or doing with that air. Nitrogen Generation is the canonical End-Use add-on inside the compressed-air system: the same air the plant already produces gets pushed through a carbon-molecular-sieve PSA generator, oxygen comes off, nitrogen stays, and what was a utility becomes a process gas the customer used to buy from a vendor. Get the End-Use spec wrong and the upstream investment is wasted — the dryer, the filters, the compressor are all sized to feed this layer, and an undersized feed-air chain shows up as a generator that can't hit purity or a vacuum pump that can't hold draw. Get it right and the customer captures every dollar the upstream layers were engineered to enable. End-Use is also the bridge to the broader pneumatic ecosystem — vacuum, pneumatic automation, and other add-on systems pick up where this layer ends.
The canonical End-Use add-on inside the compressed-air system — turns the air you already make into on-site nitrogen at the format the application demands.
The other major end-use of compressed air on most plant floors — negative-pressure work for material handling, packaging, and process. Reached from the system's Adjacencies section, not from inside this layer.
→Where most compressed air actually goes to work — cylinders, valves, tools, motion. Lives in its own system but feeds from this layer's boundary; reached from the Adjacencies section below.
→Tell us the end-use, the rough flow, and what climate the unit would sit in. We'll come back with a configured quote — the right type, the right tier, and the upstream gear the warranty assumes.
—. We reply within one business day with pricing, lead-time, and configured parts.
