Goodman b1789853 Flow Check Piston Kit 0.053 in Orifice

Product Description

The GOODMAN b1789853 is a flow check piston kit designed for use in refrigerant metering applications within split-system heat pump and air conditioning equipment. The kit includes a piston with a 0.053-inch orifice, which controls refrigerant flow rate and acts as the metering device during the appropriate cycle. This type of piston fits inside the flow check or check-piston assembly in the refrigerant circuit. Installation is typically performed by a licensed HVAC technician during system conversion, commissioning, or refrigerant circuit service. The 0.053-inch orifice size is sized for R-32 refrigerant applications.

This kit is used in residential and light commercial HVAC systems where a fixed-orifice metering device is specified. It is suited for R-32 refrigerant system configurations and is commonly installed during equipment conversion or initial setup. The piston kit is classified as an accessory or conversion component, making it relevant during system changeouts, refrigerant conversions, or when replacing a worn or incorrect orifice piston. The vendor part number for cross-reference is 119F7009, manufactured by Danfoss LLC.

Key Features

• 0.053-inch orifice diameter for precise refrigerant metering
• Designed for R-32 refrigerant applications
• Compact form factor: 0.5 inches height, 15/32 inches width
• Lightweight at 0.017 pounds
• Classified as a conversion kit and orifice component for system flexibility
• Cross-references to Danfoss vendor part number 119F7009

Compatibility

Designed as an OEM-style replacement piston kit for HVAC systems using fixed-orifice refrigerant metering with R-32 refrigerant. Verify orifice size requirement against system specifications before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with refrigerant circuit service. Recover all refrigerant and relieve system pressure before opening the refrigerant circuit to access the flow check assembly. Confirm the correct orifice size for the specific system capacity and refrigerant type prior to installing the piston. Follow applicable EPA Section 608 refrigerant handling regulations and the equipment manufacturer service documentation throughout the procedure.

Technical Specifications

• Orifice Diameter: 0.053 inches
• Refrigerant: R-32
• Unit Height: 0.5 inches
• Unit Width: 15/32 inches
• Weight: 0.017 pounds
• Product Class: Conversion Kits and Orifices
• Country of Origin: United States
• Vendor: Danfoss LLC
• Vendor Part Number: 119F7009

Standard Information

• Brand: GOODMAN
• Manufacturer Part Number: b1789853