Kenmore 153.33204 User Manual

21

1.  INITIAL PREPARATION

 

A.   Make sure the solvent cement you are planning to use is 

designed for the specifi c application you are attempting.

 

B. 

Know the physical and chemical characteristics and limitations 
of the PVC and CPVC piping materials that you are about to 
use.

 

C. 

Know the reputation of your manufacturer and their products.

 

D. 

Know your own qualifi cations or those of your contractor. The 
solvent welding technique of joining PVC and CPVC pipe is a 
specialized skill just as any other pipe fi tting technique.

 

E. 

Closely supervise the installation and inspect the fi nished  
job before start-up.

 

F. 

Contact the manufacturer, supplier, or competent consulting 
agency if you have any questions about the application or 
installation of PVC and CPVC pipe.

 

G. 

Take the time and effort to do a professional job.  Shortcuts will 
only cause you problems and delays in start-up.  By far, the 
majority of failures in PVC and CPVC systems are the result of 
shortcuts and/or improper joining techniques.

2.  SELECTION OF MATERIALS

•  Cutting Device - Saw or Pipe Cutter

•  Deburring Tool, Knife, File, or Beveling Machine (2” and above)

•  Brush - Pure Bristle

•  Rag - Cotton (Not Synthetic)

•  Primer and Cleaner

•  Solvent Cement - PVC for PVC Components and CPVC for    CPVC 

Components

•  Containers - Metal or Glass to hold Primer and Cement.  Select  

the type of PVC or CPVC materials to be used on the basis of their 
application with respect to chemical resistance, pressure rating, 
temperature characteristics, etc.

•    Insertion Tool - Helpful for larger diameter pipe and fi ttings 6 inches 

(15.2 cm) and above.

It is recommended that Tetrahydrofuran (THF) be used to prepare the 
surfaces of pipe and fi ttings for solvent welding. Do not use water, rags, 
gasoline or any other substitutes for cleaning PVC or CPVC  surfaces. 
A chemical cleaner such as MEK may be used.

The cement should be a bodied cement of approximately 500 to 1600 
centipoise viscosity containing 10-20% (by weight) virgin PVC material 

solvated with tetrahydrofuran (THF). Small quantities of dimethyl 
formamide (DMF) may be included to act as a retarding agent to extend 
curing time. Select the proper cement; Schedule 40 cement should be 
used for Schedule 40 pipe. Never use all-purpose cements, commercial 
glues and adhesives or ABS cement to join PVC or CPVC pipe and 
fi ttings.

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.

3.  MAKING THE JOINT

A. Cutting
 

Pipe must be squarely cut to allow for the proper interfacing of the 
pipe end and the fi tting 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 fl are 
the corner of the pipe end. If this type of cutter is used, the fl are on 
the end must be completely removed.

NOTE: Power saws should be specifi cally designed to cut plastic pipe.