11
APPLICATORS
Select a suitable pure bristle type paint brush. Use a proper width
brush or roller to apply the primer and cement (see chart below).
Speedy application of cement is important due to its fast drying
characteristics. IMPORTANT NOTE: A dauber type applicator
should
only be used on pipe sizes 2" and below. For larger
diameter pipe, a brush or roller must be used.
RECOMMENDED BRUSH* SIZE FOR PRIMER
AND CEMENT APPLICATIONS
Nominal Pipe
SizeBrush Width
(IPS)
(INS.)
2
1-1/2
3
1-1/2 - 2-1/2
*USE ONLY NATURAL BRISTLE
3. MAKING THE JOINT
A. Cutting
Pipe must be squarely cut to allow for the proper interfacing of
the pipe end and the fitting socket bottom. This can be
accomplished with a miter box saw or wheel type cutter. Wheel
type cutters are not generally recommended for larger
diameters since they tend to flare the corner of the pipe end. If
this type of cutter is used, the flare on the end must be
completely removed.
NOTE: Power saws should be specifically designed to cut plastic
pipe.
STEP A
B. Deburring
Use a knife, plastic pipe deburring tool, or file to remove burrs
from the end of small diameter pipe. Be sure to remove all
burrs from around the inside as well as the outside of the pipe.
A slight chamfer (bevel) of about 10°-15° should be added to
the end to permit easier insertion of the pipe into the end of
the fitting. Failure to chamfer the edge of the pipe may remove
cement from the fitting socket, causing the joint to leak.
STEP B
C. Test dry fit of the joint
Tapered fitting sockets are designed so that an interfaced fit
should occur when the pipe is inserted about 1/3 to 2/3 of the
way into the socket. Occasionally, when pipe fitting dimensions
are at the tolerance extremes, it will be possible to fully insert
dry pipe to the bottom of the fitting socket. When this happens,
a sufficient quantity of cement must be applied to the joint to
fill the gap between the pipe and fitting. The gap must be filled
to obtain a strong, leak-free joint.
D. Inspection, cleaning, priming
Visually inspect the inside of the pipe and fitting sockets and
remove all dirt, grease or moisture with a clean dry rag. If
wiping fails to clean the surfaces, a chemical cleaner must be
used. Check for possible damage such as splits or cracks
and replace if necessary.
Depth-of-entry
Marking the depth of entry is a way to check if the pipe has
reached the bottom of the fitting socket in Step F. Measure
the fitting depth and mark this distance on the pipe O.D. You
may want to add several inches to the distance and make a
second mark as the primer and cement will most likely destroy
your first one.
Apply primer to the surface of the pipe and fitting socket with a
natural bristle brush (see chart on this page). This process
softens and prepares the PVC or CPVC for the solvent
cementing step. Move quickly and without hesitation to the
cementing procedure while the surfaces are still wet with primer.
STEP E
E. Application of solvent cement
• Apply the solvent cement evenly and quickly around the
outside of the pipe at a width a little greater than the depth
of the fitting socket.
• Apply a light coat of cement evenly around the inside of the
fitting socket. Avoid puddling.
• Apply a second coat of cement to the pipe end.
NOTE: Cans of cement and primer should be closed at all times
when not in use to prevent evaporation of chemicals and hardening
of cement. They are also very flammable and should be kept
away from heat or flame.
STEP F
