Repsouth 9HH550 Gravity Pivot B-vent Round Hinge

Product Description

The REPSOUTH 9HH550 is a gravity pivot B-vent round hinge fitting sized at 1-1/4 inches. This component is used in Type B double-wall gas vent systems, where it allows a vent pipe segment to pivot or rotate under gravity, maintaining proper alignment without mechanical fasteners. The fitting is designed for round B-vent pipe and is a standard trade-supply part installed by HVAC technicians and plumbers working on venting systems for gas-fired appliances.

This hinge fitting is typically used in residential or light commercial applications where a Type B vent run requires a controlled pivot point. Common install scenarios include gas furnace, water heater, and boiler flue systems that require a short horizontal or angled offset within the vent run. The 1-1/4 inch diameter makes it appropriate for smaller BTU appliances with correspondingly sized vent pipe.

Key Features

• Gravity-actuated pivot design allows vent pipe to swing or align without mechanical fasteners
• Round profile sized for 1-1/4 inch Type B double-wall vent pipe
• Designed for use in gas appliance venting systems including furnaces and water heaters
• Standard B-vent hinge fitting for residential and light commercial vent runs

Compatibility

Designed as an OEM-style replacement fitting for 1-1/4 inch round Type B double-wall gravity vent systems.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber in accordance with NFPA 54 and local gas vent codes. Shut off the gas supply and allow the appliance to cool before servicing any vent components. Ensure the vent run maintains minimum clearances to combustibles as required by the vent manufacturer and applicable code. Do not use this fitting on single-wall vent pipe or in applications requiring mechanical locking joints.

Technical Specifications

• Pipe Diameter: 1-1/4 inches
• Vent Type: Type B Round Double-Wall
• Fitting Type: Gravity Pivot Hinge

Standard Information

• Brand: REPSOUTH
• Manufacturer Part Number: 9HH550