ACP 15  -  Standard version (SD version)_PFEIFFER VACUUM Dry, compact multi-stage Roots pumps with a pumping speed of max. 14 m3/h Due to frictionless design, no contamination throughparticles: no wearing parts in the path of the gas flow * No hydrocarbon vapor backstreaming: pumps in the ACP series are lubricant-free in the pumping module * Constant performance (pumping speed, maximum continuous inlet pressure and ultimate pressure) * High reliability: thanks to extensive experience with dry Roots  pumps since 1988 * Low maintenance costs: no annual service, complete overhaul only every 20,000 hours (ACP 15) * Suitable for condensable vapors: with gas ballast and drainable silencer