plasticexhaustfans.com · 2018. 1. 15. · created date: 6/9/2014 1:53:55 pm
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Back Draft Dampers, Vertical Gravity
Material of Construction and Temperature Limitation: Body, damper plate and shaft shall be made of PVC. Back Draft Damper recommended up to 140° F.
Application: Designed to operate in ducting where highly corrosive air is present. Designed to fit round schedule 40 PVC ducting or other construction materials as specified by the dimensions listed for each model damper.
Shall have the following Features and Benefits:• All internal parts are plastic• Can be installed vertically only • Shall have bell end sockets and shall have minimum socket depth of 2 inches or more except on the 4 inch
model which will be 1.75 inches• Allows for less than 5% airflow restriction• Offers an approximate 95% seal
Warranty:This equipment is warranted tobe free from defects in materialand workmanship for one yearfrom date of original shipment.
SPECIFICATION RELATED FAN POSITION MODEL # QTY NOTES
B
C
A
30º
.95
2.1
STOPS.6” Dia. PVC Shaft - 10” & Up.375" Dia. PVC Shaft - 4" to 8"
.188" Blades - 10" & Up
.125" Blades - 4" to 8"
.75" Thick Bearing Block
PVC Duct
BD10 BD12 BD14BD08BD04 BD06
DIMENSIONAL DATA (inches)
4"4.508.502.25
SizeABC
6"6.6259.502.25
8"8.62510.502.50
10"10.7511.752.50
Models
12"12.7512.752.75
14"14.0013.752.75
Note: Dampers are designed to be self-closing when installed in a vertical position.
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Phone: 631-973-4304
Submittal Data and Specifications
PROJECT ARCHITECT
CONTRACTOR DATE SUBMITTED BY ENGINEER