Vactor Manufacturing’s air-only version of its HXX Paradigm vacuum excavator keeps the spoils material dry and available for backfill. The Paradigm’s modular design tailors the excavator to be used without air, and with or without water. The air-only configuration is equipped with the choice of air compressor rated at 185 cfm at 150 psi or 300 cfm at 250 psi. 800/627-3171; www.vactor.com