Grundfos UPMS 20-78 Circulation Pump

The Grundfos UPMS 20-78 is a high-efficiency ECM variable-speed circulator pump built for a wide range of residential and commercial heating applications. Engineered with electronically commutated motor (ECM) technology and a permanent magnet rotor, it delivers powerful, reliable circulation while reducing energy use.

This pump is designed for quiet operation, long life, and reduced maintenance calls, thanks to its robust startup, self-ventilating design, and built-in dry-running protection.

Key Benefits:

• Variable-speed operation for maximum efficiency

• Self-protecting features reduce service needs

• Easy-to-use interface for quick setup

• Ideal for hydronic heating systems

Specifications:

• Electrical: 115V, 60Hz

• Pipe Connection: Cast Iron

• Max Flow Rate: 16 gpm (3.6 m³/h)

• Max Head: 25.6 ft (7.8 m)

• System Pressure: Up to 174 psi (1.2 MPa)

• Min Inlet Pressure: 7 psi (0.05 MPa) at 203°F (95°C)

• Liquid Temperature Range: 36–230°F (2–110°C)

⚠️ Important Safety Note:
This pump must not be used for transferring flammable liquids such as diesel, gasoline, or similar substances.