DISTRIBUTOR-FIRST SUPPLY PARTNER · SINCE 1999 Live · Agriculture & Food Production System
SPC Company
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Agriculture & Food Production

Pneumatic handling, sorting, and packaging air across farm-to-plant food production.

ISO 8573-1 [3.4.3] Conveying air quality
ATEX Zone 2D / 22 Dust zone rating
−40°F PDP Outdoor dryer target
01Overview

In raw food production, compressed air moves product before any plant ever processes it — pneumatically conveying grain, flour, sugar, and feed, firing optical sorters and ejectors, and driving balers, planters, and remote pumping where there's no plant air line for miles. The core demand is air that survives combustible dust, outdoor temperature swings, and dirty intake without becoming the ignition source or the contamination source.

SPC's distributor-first model fits because no single brand covers grain handling, ATEX dust zones, and remote outdoor duty at once. We pair ruggedized compression, deliquescent or desiccant drying built for the weather, and dust-rated valves and instruments from the brand that's strongest at each stage — and your local distributor stocks the wear parts a seasonal operation can't wait on.

Who operates here
Grain elevators & terminals Receiving, storing, and pneumatically conveying grain through combustible dust zones.
Flour mills & feed mills Milling and pneumatic transport of flour, bran, and animal feed under ATEX dust ratings.
Sugar refineries Refining and conveying granulated and powdered sugar — a high explosion-risk dust.
Row-crop & produce farms Field operations running planters, seeders, and pneumatic spray rigs off-grid.
Dairy & livestock operations Milking systems, feed handling, and barn ventilation actuation.
Sorting & packaging lines Optical sorters, ejectors, and baggers handling raw grain, nuts, and produce.
02What this industry needs

The facts that drive the spec.

ATEX / DUST
Combustible dust changes the whole spec

Grain, flour, and sugar dust are explosive suspensions. Equipment in the conveying and milling zones runs to ATEX 2D/3D (dust zones 22/21) — solenoids, drains, and instruments must be rated for the zone, not just IP-sealed.

CONVEYING
Pneumatic conveying eats air volume

Moving grain or powder through a line is a high-volume, continuous duty, not an intermittent actuator load. Size the compressor and receiver for sustained conveying flow plus the dust collector's pulse-jet demand on top.

OUTDOOR
The dryer fights the weather, not the plant

Remote and outdoor air has no climate-controlled room. A deliquescent dryer needs no power and suits unattended sites; where the dew point must go deep, a desiccant unit hits −40°F PDP so lines don't freeze in winter.

REMOTE
No plant air for miles

Field pumping, seeders, and spray rigs run off engine-driven or standalone compressors. Spec for dirty intake and vibration — oversize the intake filter and run a robust separator, because the nearest service truck is hours away.

NSF / FOOD
Air that contacts product needs a clean grade

Where air touches grain, nuts, or produce — blow-off, sorter ejection, bagging — it needs oil-removal filtration and food-grade components at the drop. Conveying air that contacts product follows the same logic as plant air, even out in the field.

PITFALL
Don't put a standard drain in a dust zone

A condensate drain that vents or sparks inside a combustible-dust zone is an ignition risk and a code violation. Use a zero-loss, zone-rated drain — and route the discharge to a separator, not the dusty floor.

PITFALL
Seasonal duty isn't light duty

Harvest and milling seasons run equipment flat out for weeks, then idle it for months. That swing is hard on dryers and separators. Spec for the peak continuous load and stock wear parts before the season, not during it.

03Compliance standards

The gates that control product selection.

Hover any standard for what it controls. These are the certs that decide which dryer, filter, and lubricant make the cut.

NFPA 61 Fire and dust-explosion prevention for agricultural and food processing facilities — gates equipment ratings in grain and milling dust zones. NFPA 652 / 654 Combustible-dust fundamentals and handling of combustible particulate solids — drives ATEX/Class II zone classification. ATEX (2D / 3D) Equipment ratings for explosive dust atmospheres — applies to solenoids, drains, and instruments in conveying and milling zones. OSHA 1910.272 Grain-handling facilities standard — housekeeping and ignition-control rules that compressed-air equipment must not violate. ISO 8573-1 Compressed-air purity classes — referenced where conveying or blow-off air contacts product.
04Recommended product types

What we spec for this vertical — and how each fits.

Two systems, kept separate. Compressed air on the left, pneumatic automation on the right. Each card carries how the product fits in Agriculture & Food Production.

06Cue → move  ·  distributor talk track

Listen for the lever. Route to the answer.

Customer cue → SPC move

"Our air lines freeze up at the elevator every winter."
Their dryer can't hold dew point outdoors. Move them to a regenerative desiccant dryer at −40°F PDP, or a no-power deliquescent unit for unattended sites — sized to sustained conveying flow.
"Inspector flagged our condensate drain in the milling area."
A venting drain in a combustible-dust zone is an ignition risk. Drop in a zero-air-loss condensate drain and route discharge to a separator, not the floor.
"We're running planters and a sprayer out in the field with no plant air."
Standalone duty with dirty intake. Oversize the compressor intake filter and pair a robust separator — service is hours away, so build margin into the wear path.
07Talk to a specialist

Bring us the application — we'll spec the train.

Send the conditions and the constraint. We size the system, name the tiers, and tell you what attaches on the quote.