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The Bell & Gossett Series PL (Permanently Lubricated) booster pumps are close coupled in line circulator booster pumps. Each pump is built with either an iron or bronze construction and can pump liquids compatible with the pump’s body type. PL series booster pumps are ideal for pressure boosting and water circulating applications in hydronic, radiant, solar, and geothermal heating systems. PL series booster pumps feature a powerful, dry-motor design which delivers performance ratings that are both more powerful and more efficient than the closest competitors. The shafts are constructed with high-strength alloy steel to resist the cracking that can result from high heat. All models are lead free. Bell & Gossett PL Series Booster Pumps Model Comparison Chart Part Number Model Number Horsepower Voltage Phase RPM Full Load Amps Construction 1BL012 PL-30 1/12 HP 115 V 1 2650 1.4 Cast Iron 1BL001 PL-36 1/6 HP 115 V 1 3300 2.1 Cast Iron 1BL002 PL-45 1/6 HP 115 V 1 3300 2.1 Cast Iron 1BL016 PL-50 1/6 HP 115 V 1 3300 1.8 Cast Iron 1BL003LF PL-36B 1/6 HP 115 V 1 3300 2.1 Bronze 1BL004LF PL-45B 1/6 HP 115 V 1 3300 2.1 Bronze 1BL032 PL-55 2/5 HP 115 V 1 3250 4.7 Cast Iron 1BL068LF PL-55B 2/5 HP 115 V 1 3300 4.7 Bronze 1BL070 PL-130/3" 2/5 HP 115 V 1 3200 4.8 Cast Iron Performance Curves TECHNICAL BROCHURES Bell & Gossett PL Series Brochure INSTALLATION/OPERATION MANUALS Bell & Gossett PL Series Manual PARTS LISTS  Bell & Gossett Repair Parts List SPECIFICATIONS N/A IMAGES