Ferguson Enterprises b1789847 Flow Check Piston Kit

Product Description

The FERGUSON ENTERPRISES b1789847 is a genuine OEM replacement flow check piston kit designed for use in split-system heat pump and air conditioning refrigerant circuits. The flow check piston controls refrigerant direction and pressure drop across the metering device, allowing the system to operate efficiently in both heating and cooling modes. Licensed HVAC technicians install this component as part of refrigerant-side service or system repair. It is a direct OEM replacement part, ensuring correct fitment and function without field modification.

This flow check piston kit is intended for residential split-system heat pump applications where the existing piston or flow check assembly has failed or requires replacement during a refrigerant-circuit service call. The kit format provides the necessary components for a complete replacement. Install this part only when the system has been properly recovered and the refrigerant circuit is depressurized. Do not substitute non-OEM pistons, as orifice sizing is system-specific and directly affects system capacity and efficiency.

Key Features

• Genuine OEM replacement part ensuring correct orifice sizing for the target system
• Flow check function allows bidirectional refrigerant metering in heat pump systems
• Kit format includes components needed for a complete piston assembly replacement
• Direct drop-in replacement requiring no field modification

Compatibility

Designed as an OEM-style replacement flow check piston kit for residential heat pump and split-system air conditioning equipment.

Installation Notes

Installation must be performed by an EPA Section 608 certified HVAC technician. Recover all refrigerant from the system before opening the refrigerant circuit to replace the piston assembly. Ensure the system is fully depressurized and follow applicable mechanical codes before disassembling the metering device. After reassembly, pressure-test the circuit for leaks before recharging with the manufacturer-specified refrigerant type and charge.

Technical Specifications

• Part Type: Flow Check Piston Kit
• OEM Status: Genuine OEM Replacement Part

Standard Information

• Brand: FERGUSON ENTERPRISES
• Manufacturer Part Number: b1789847