Duravent Stove Pipe DVP 90° Elbow (galvanized) 5" x 8"

DirectVent Pro is a coaxial — concentric — direct vent system designed for gas and propane appliances only. Its defining characteristic is the coaxial pipe design: one pipe runs inside another, with the inner pipe exhausting flue gases from the appliance to the outside and the outer pipe simultaneously drawing combustion air from outside into the appliance through the space between the two pipes. This sealed combustion approach requires no interior room air for combustion, making it particularly well suited to tightly constructed homes and eliminating the negative pressure issues associated with conventional venting. A Class A chimney system such as DuraTech is a single-flue chimney for all-fuel appliances — wood, coal, oil, or gas — and draws combustion air from the room rather than directly from outside through the pipe assembly.

Fully unitized construction means that the inner pipe and outer pipe of the 58DVA-E90 elbow are joined together as a single assembled unit — they are not separate components that must be aligned and connected independently during installation. When the installer connects the 58DVA-E90 to the adjacent pipe section, both the inner and outer connections engage simultaneously with a single twist-lock action, ensuring that the inner and outer pipes are correctly aligned and locked in both the inner flue gas passage and the outer combustion air passage at the same time. This simplifies installation and eliminates the risk of the inner and outer pipes becoming misaligned at the connection, which could compromise both the flue gas exhaust and the combustion air intake passages.

The 58DVA-E90 elbow is designed so that it can be rotated to any azimuthal direction — any compass bearing — while the twist-lock connection remains fully engaged. This means the installer can connect the elbow to the adjacent pipe section and then rotate the elbow body to point in any required direction for the vent run without having to disengage and re-engage the lock. The 90-degree angle of the elbow remains fixed — it cannot be changed — but the direction in which the 90-degree turn is made can be adjusted freely by rotating the elbow after it is locked onto the pipe. This makes installation more efficient because the vent run direction can be fine-tuned after the connection is made rather than requiring the connection to be partially disassembled to change orientation.

Yes — checking the appliance manufacturer's installation instructions before selecting any DirectVent Pro component is critically important. The appliance manufacturer's instructions will specify which direct vent system — or systems — the appliance has been tested and listed with, as well as the specific vent configuration requirements for that appliance, including maximum horizontal run, minimum and maximum vertical rise, maximum offset, the number of elbows permitted, and whether sealant is required at connections. DirectVent Pro is specified by many major gas stove and fireplace manufacturers, but the specific model and configuration must always be confirmed against the appliance manufacturer's instructions before ordering and installing components. Using an incompatible vent system or configuration can void the appliance warranty and may create a safety hazard.

The 58DVA-E90 and 58DVA-E90B are the same DirectVent Pro 5-inch by 8-inch 90-degree elbow in construction and function — the only difference is the outer wall finish. The 58DVA-E90 has a galvanized steel outer wall finish, while the 58DVA-E90B has a black painted outer finish achieved through laser-welded exterior seams on the black-painted outer wall. The black finish option is typically selected for vent sections that are visible in the installation space — for example, the horizontal vent run through a finished room — where a black finish coordinates better with the appliance's appearance and the room's interior decor than the silver galvanized finish. Both options have the same .020-inch aluminum inner wall construction and the same DirectVent Pro performance specifications.

A complete DirectVent Pro 5-inch by 8-inch installation using the 58DVA-E90 requires the full set of system components appropriate to the vent configuration specified by the appliance manufacturer. Straight pipe lengths in the 58DVA series provide the horizontal and vertical run sections of the vent. A 45-degree elbow is available for shallower direction changes. A wall termination cap or vertical termination cap provides the exterior termination of the vent system. A wall thimble is required where the vent passes through a combustible wall. Firestop and radiation shield components are required where the vent passes through combustible ceiling or floor assemblies in vertical vent configurations. All components must remain within the DirectVent Pro 5-inch by 8-inch system family and must be confirmed as appropriate for the specific appliance installation by the appliance manufacturer's instructions.