350 HP Rotary Screw Air Compressors — Two Stage

Oil-free two-stage compressors, such as the EnviroAire T & TVS, deliver ISO 8573-1 CLASS 0 certified air with zero oil carryover — critical for food, pharmaceutical, and electronics applications. Oil-flooded models offer lower upfront cost and are well-suited for general industrial applications where trace oil contamination in compressed air is acceptable with downstream filtration.

Gardner Denver two-stage rotary screw compressors in the 350 HP range typically operate between 58 and 145 PSIG (4–10 bar g). The EnviroAire T & TVS series covers this full range. For applications requiring higher pressure up to 190 PSIG, single-stage models like the L Series or LRS Series are available and can be evaluated based on your system demands.

Two-stage oil-free compressors at 350 HP are essential for food and beverage production, pharmaceutical manufacturing, electronics fabrication, and automotive painting. In these industries, even trace oil or silicone contamination can cause product spoilage, batch rejection, circuit failures, or paint finish defects. ISO 8573-1 CLASS 0 certification ensures absolute air purity for these critical processes.

ISO 8573-1 CLASS 0 is the highest international purity classification for compressed air, certifying zero detectable oil content — aerosol, liquid, and vapor. The EnviroAire T & TVS is independently tested and certified to this standard. It matters because even microscopic oil contamination can compromise pharmaceutical formulations, electronic assemblies, food products, and automotive finishes, leading to costly recalls or rework.

Yes. The EnviroAire TVS model offers variable speed drive technology that delivers up to 35% direct energy savings by continuously matching compressed air output to actual system demand. The LRS Series extends VSD benefits across a broader HP range with energy savings of 30–50%. VSD is particularly valuable in facilities with fluctuating air demand, reducing electricity costs and extending equipment life.

Standard packages include a 2-year warranty on the compressor package with extended 5- and 6-year programs available through authorized service providers for the EnviroAire series. Gardner Denver's Platinum 10-Year Extended Warranty covers airend components, while the Platinum+ Full Package Warranty provides a 5-year renewable service agreement covering wear items, major components, and factory-trained distributor support through Comp-Air Ohio.