Fluidra - 4-Way Reversing Valve for Zodiac Z200 MD4/MD5 & PI20 Heat Pumps

Fluidra – 4-Way Reversing Valve for Zodiac Z200 MD4/MD5 & PI20 Heat Pumps

This is the genuine Fluidra replacement 4-way reversing valve for the Zodiac Z200 MD4, Z200 MD5, and PI20 series pool heat pumps. Located within the refrigerant circuit, the 4-way valve controls the direction of refrigerant flow, enabling the heat pump to switch between heating mode and defrost cycle inversion — a core function of the MD (defrost) variants in the Z200 range.

Compatibility

This valve is the correct OEM replacement part for the Zodiac Z200 MD4 and MD5 defrost heat pump models, as well as the PI20 series. These are popular 230V/50Hz pool heat pumps operating on R32 refrigerant. Always verify your model number before ordering, as other Z200 variants (non-MD) use different components.

Why genuine matters

The 4-way reversing valve is a safety-critical component inside the sealed refrigerant circuit. Using a genuine Fluidra part ensures correct pressure ratings, connector compatibility, and adherence to the R32 refrigerant system specifications — protecting both equipment performance and warranty. Third-party replacements may void the manufacturer’s guarantee.

Installation

Replacement of this valve involves working within the pressurised R32 refrigerant circuit and must only be carried out by a qualified refrigeration engineer. The system must be properly evacuated, and all recovered refrigerant returned to the supplier in the correct recovery cylinder. Do not attempt DIY installation.