Delavan SmartFLO™ Series 3120-421F-SB 2.0 GPM 85-100 PSI Diaphragm Demand-Bypass Pump with 3/8” Female Threaded Ports. SmartFLO™ technology automatically adapts flow rates to provide optimal performance in any application. Harmful rapid switch cycling is completely eliminated to extend pump life with no additional setup required

SmartFLO™:
• Combines the advantages of both Bypass and Demand Controls
• Utilizes Pressure Sensing Demand Switch AND Internal Bypass Valve
• Automatically adapts to changing system demands
• Constant and instant flow eliminates pump cycling
• Will turn off when not in use and outlets are closed
• Low chance of overheating when run for long periods

Fits All Applications:
• RV and Marine systems
• Small to medium size sprayers
• Multi-outlet systems

Features:
• 100% Factory tested
• Self-Priming
• Can be run dry
• High Torque Motor for superior flow at pressure
• 2 Year warranty from date of purchase

SmartFLO Pump Model 3222-421F-SB Video

Specifications:
• Pump Type: Bypass - Demand, 3-chamber positive displacement
• Flow: Up to 2.0 GPM
• Valves: Viton
• Diaphragm: Santoprene
• Power: 12VDC
• Leads: 12 AWG, 6” long with 2-pin molded connector
• Amps: 8.5 Max
• Pressure Settings: 85-100 PSI
• Inlet/Outlet Ports: 3/8” FNPT
• Packaging: Small box
• Weight: 5.6 lbs