Circulation Pump No name H/CP-64-040, central heating 25/40, connection 6/4"

Electric circulation pump No name H/CP-64-040 for central heating systems, rated 25/40 with a 6/4" (1.5") connection, is designed to circulate hot water in radiator and heating circuits. The compact inline design supports continuous flow for even heat distribution and helps maintain system pressure and flow in domestic and light commercial HVAC installations. The pump is intended for integration into closed hot-water heating systems where a reliable small circulation unit is required.

Advantages

The pump combines a compact footprint with straightforward hydraulic connections, enabling easy installation in tight spaces. Its 25/40 performance rating provides adequate differential head for typical domestic circuits, supporting multi-radiator systems and short distribution loops. The 6/4" connection simplifies fitting to standard piping where compatible adapters or fittings are used. The design focuses on continuous operation and consistent flow, reducing temperature stratification in heating circuits.

Suitable for

• Domestic central heating systems with radiators
• Small commercial HVAC circuits and light-duty installations
• Inline replacement of compact circulation pumps
• Systems requiring a 6/4" (1.5") connection size

Key specifications

• Performance rating: 25/40 (differential head and flow capability appropriate for typical domestic circuits)
• Connection size: 6/4" (approximately 1.5")
• Application: circulation of hot water in closed central heating systems
• Design: compact inline pump suitable for constrained installation spaces
• Operation: continuous duty suitable for steady heat distribution

How to use

Install the circulation pump in the return or supply line according to the flow direction indicated on the pump body. Ensure system power is isolated before performing electrical connections and that piping is depressurised and drained. Use compatible threaded fittings or adapters for the 6/4" connection, and verify mechanical seals and gaskets are correctly seated to prevent leaks. After mounting, refill and vent the heating system to remove air pockets, then restore power and check for correct rotation and stable operation. Monitor system temperature and pressure during initial run-in to confirm proper integration.

Usage recommendations

For reliable performance, use the pump in closed hot-water heating systems with compatible water quality and avoid corrosive or particulate-laden fluids. Where required, fit compatible isolation valves and a strainer upstream to facilitate maintenance and protect the pump from debris. Periodic visual checks for leaks, unusual noise, or vibration are recommended; follow local electrical and plumbing codes for installation and servicing.