Page 272 - FanPedia - By Aerovent

®
FAN-PEDIA

Published by AEROVENT.COM TECHNICAL DESCRIPTIONS

Aerovent

©2017

Blast Gate
A wafer-type butterfly valve for mounting to outlet flange allows controlling flow to full shutoff.
Available for automatic control. Maximum temperature 250°F. The Blast Gate & flange bolt pattern
match 125# ASA Pipe Flange.

Clamshell Fans – Axial Fans (Single & Double Door)
Clamshell fans are available designed to provide complete access to the interior of the fan for
maintenance or cleaning without removal of ductwork. Clamshell construction is available for inline
centrifugal and axial fans and is typically used in vertical mount applications. For the double door
configuration, one of the two access doors is wide enough for wheel removal.

Companion Flanges (Round and Rectangular)
Companion flanges are connected to the connecting ductwork in the field and ensure a matching
connection to the fan. They are shipped loose for field mounting.

Damper: Butterfly Damper
Back Draft dampers are commonly installed in fan exhaust systems to prevent a back draft of outside
air when the fan is off. The damper is either a Spring Return type for both horizontal and vertical
mounting or Gravity Return used in vertical venting only.

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