
12
does no longer have a 90° angle.
4. 45° Offsets with 90° Elbows.
Figure 21 shows a 90° Adjustable
Elbow being utilized to accomplish a
45° offset. This Elbow is completely
adjustable from 0° to 90°. Please note
that the centers of the upper sections
tend to displace by a slight amount, as
they are rotated. Again, screws (not
longer than 1/4") may be used to
secure the joint. Wall Straps should
also be utilized to enhance the stabil-
ity of the vent system.
MALE AND FEMALE ADAPTORS
1. Description. The male and female adaptors
enable an installer to connect Simpson Dura-Vent B-
vent components to an existing Type B gas vent system
manufactured by the following companies: American
Metals Products, Household Mfg, Hart & Cooley Mfg,
Metal Fab, Inc, White Metal Products, Air Jet, Mitchell
Metal Products.
2. Connecting into Existing Competitors System.
To connect into an existing competitors gas venting
system from below, or from the appliance side, connect
a Female Adaptor as shown in Figure 22, insuring that
the inner liner of the adaptor is outside the inner liner of
the existing pipe. Push the adaptor as far up as it will go,
and tighten the locking bolt until the connection is snug.
3. Extending an Existing Competitors System.
To continue an existing competitors system up towards
the termination using Dura-Vent Type B Gas Vent,
connect a Male Adaptor to the last section of the system,
as shown in Figure 23, insuring that the inner liner of the
Adaptor fits smoothly inside the Pipe or fitting below it. Push the Adaptor
down as far as it will go, and tighten the locking bolt until the connection is snug.
Fig 21
FEMALE
MALE
DISPLACE-
MENT
10°
EXISTING
SYSTEM
B-VENT
ADAPTOR
(FEMALE)
Fig 22
EXISTING
SYSTEM
B-VENT
ADAPTOR
(MALE)
Fig 23
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