Four-Way Valve for Norsup SP28T / SP35T Heat Pumps - 7036941

Bosta – Four-Way Valve for Norsup SP28T / SP35T Heat Pumps

This is the genuine OEM four-way valve designed specifically for the Norsup Silent-Pro SP28T and SP35T inverter pool heat pumps. The four-way valve is a critical refrigerant-circuit component that redirects refrigerant flow between heating and cooling modes, allowing the heat pump to function as both a pool heater and a pool cooler. Replacing a faulty valve with the correct genuine part restores full operational capability and protects the refrigerant circuit.

Compatibility

This valve is a direct OEM replacement for the Norsup SP28T and SP35T pool heat pump models only. The SP28T and SP35T are large-capacity three-phase inverter heat pumps suited to pools of up to 130 m³. This part is not confirmed to fit any other Norsup SP model — always verify your model designation before ordering.

Why Genuine Matters

The four-way valve operates under refrigerant pressure and must deliver a reliable, leak-free seal across all operating cycles. Using a genuine Bosta-sourced Norsup part ensures the correct pressure ratings, port dimensions, and coil voltage are matched to your unit, safeguarding the refrigerant charge and maintaining manufacturer warranty compliance.

Installation

Replacement of the four-way valve involves working within the sealed refrigerant circuit of the heat pump. This work must be carried out by a certified F-gas refrigeration engineer. The refrigerant must be recovered before removal, and the circuit must be leak-tested and re-charged after fitting. Do not attempt this repair without the appropriate qualifications and equipment.