Specification

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Venting
Gas Appliance
Traditional
Method
Recommended
Method
Gas Appliance
• To prevent downdrafts.
• To keep birds and debris out of the vent stack.
• To keep rain out of the vent stack.
• When venting gas or oil appliances.
Prevent Flue Gas Spillage
Star-Kap
®
The Star-Kap
®
is the only vent cap that is not required to be
two feet higher than any structure within ten feet when used on
detached or lean-to buildings that house heating equipment
outside of the living space.
The unique design of the aluminized Star-Kap Vent Cap prevents
downdrafts and assists the vent in drawing off and exhausting
waste gases regardless of wind direction. The Star-Kap can be
used to vent gas or oil-fired boilers, furnaces, water heaters
and more.
Although vent stacks are designed to remove dangerous gases
and smoke created by burning gas and oil, this process can be
adversely affected by the direction of the wind. A sudden gust
could blow noxious waste gases down the vent stack and into the
building. The Star-Kap prevents a potentially dangerous situation.
The Star-Kap, when used in conjunction with a
double-acting Draft Control and Thermal Safety Switch,
creates a system that prevents flue gas spillage. Ask
about AGA testing reports for more information.
When to use a Star-Kap
Model
Fits
Pipe
Dimensions (inches)
A B C D
SK-3
3 2
7
⁄8 6
1
⁄2 8
1
⁄4 8
3
⁄8
SK-4
4 3
7
⁄8 6
1
⁄2 8
1
⁄4 8
3
⁄8
SK-5
5 4
7
⁄8 6
1
⁄2 8
1
⁄4 8
3
⁄8
SK-6
6 5
7
⁄8 10 12
3
⁄8 11
SK-8
8 7
7
⁄8 10 12
3
⁄8 11
SK-10
10 9
7
⁄8 16 21
7
⁄8 13
5
⁄8
SK-12
12 11
7
⁄8 16 21
7
⁄8 13
5
⁄8
SK-14
14 13
7
⁄8 16 21
7
⁄8 13
5
⁄8
Vent Caps