Grundfos 95906639 Pump 320788-704 Always verify the 100503-04 part

Always verify the 100503-04 part number on your existing sensor before installation

protecting internal motor components from dust and debris accumulation that can lead to premature failure

this industrial solenoid coil provides the durability required for 240-volt electrical systems

using genuine OEM controls like this 155f open limit switch is necessary to maintain specified performance and safety protocols

this assembly ensures stable pressure modulation and consistent signal conversion in complex pneumatic control loops

Grundfos 95906639 Pump 320788-704 Always verify the 100503-04 partThe Grundfos 95906639, also identified as the UPS 43 100 SF, is a high performance, three speed stainless steel circulator pump engineered for demanding hydronic heating and domestic hot water recirculation systems. Running on a 208V single phase motor, this wet rotor unit delivers a maximum flow of 65 GPM and a maximum head of 31 feet, providing the versatility needed to match specific system requirements across three distinct performance curves. Its