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Xylem-Bell & Gossett 103402 Nrf36 208/230V 3 Speed Pump

Special Price $547.20 Regular Price $607.39
In stock
Nrf36 208/230V 3 Speed Pump

Speed Pump Xylem-Bell & Gossett 103402

Xylem-Bell & Gossett 103402 is a wet rotor circulator pump designed to keep your hydronic system flowing smoothly and efficiently. Think of it as the heart of your heating, cooling, or hot water circulation system, pushing water through pipes and ensuring optimal comfort in your home or building. is a also known as the NRF-36. It's designed for hot water heating systems in residential and light commercial applications. Here's a breakdown of its key features

Key Features:

  • Powerful performance: Delivers high flow rates and head pressure, ideal for various hydronic applications.
  • Durable construction: constructed with premium components for enduring dependability and performance.
  • Energy-efficient: Features a three-speed motor for adjustable flow and optimized energy consumption.
  • Quiet operation: reduces vibration and noise, creating a calm atmosphere.
  • Versatile compatibility: Works with various boiler types and piping systems.


  • Hydronic heating systems: Circulates hot water through boilers, radiators, and baseboard heaters.
  • Hydronic cooling systems: chills water and runs it through fan coil units and air conditioners.
  • Domestic hot water circulation: Maintains hot water readily available at taps and appliances.
  • Booster systems: Increases water pressure for specific zones or applications within the system.

Additional Information:

  • Available in various voltage options (208/230V, 115V) and sizes to suit different system needs.
  • incorporates a safety feature called thermal overload protection.
  • Simple to maintain and install, with easily obtained replacement parts.

Technical Specifications:

  • Voltage: Typically 208/230V (check specific model)
  • Power: Usually 0.5 to 1.5 HP
  • Flow rate: Variable depending on speed setting, typically 10-40 GPM
  • Maximum head: Around 30-50 feet

Signs of a Faulty 103402 Speed Pump Xylem-Bell & Gossett:

A faulty Xylem-Bell & Gossett 103402 can impact your hydronic system's performance and comfort. Here are some red flags to watch out for:

Performance Issues:

  • Decreased water flow rate: This is a common symptom, indicating the pump isn't circulating water efficiently. You might experience uneven temperatures, reduced heating/cooling capacity, or inconsistent hot water flow.
  • Increased noise and vibration: Unusual sounds like grinding, humming, or banging can indicate internal wear, bearing issues, or impeller problems.
  • Pump not starting or stopping frequently: This could be due to electrical issues, a seized impeller, or a faulty control board.

Operational Problems:

  • Increased energy consumption: The pump might require more power to operate due to inefficiency caused by internal issues.
  • Leaks: Worn seals or cracked pump housing can lead to water leaks around the pump.

Additional Indicators:

  • Reduced system performance: The overall heating/cooling system might not perform as well as usual due to the pump's decreased effectiveness.
  • Overheating: Increased friction due to internal issues can lead to the pump overheating.
  • Frequent cycling: The pump might turn on and off repeatedly due to malfunctioning controls or pressure switch issues.

Specific Signs for Speed Pump 103402:

  • Loss of air vent pressure: This could indicate a leak in the air separator within the pump, impacting its performance.

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