Solvent Cement Welding Joint

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Solvent Cement Welding Joint

09 February 2021

Joining Equipment and Material
- Cutting Tool
Saw & Miter Box or Pipe Cutter (Ratchet Type,
Wheel Type)
- Pipe deburring & beveling tool, file or knife
- Solvent Cement
PVC : 711[to 12"],719[to 24"] : IPS Corp.
CPVC : 714[to 12"],729[to 24"] : IPS Corp.                                                                                                      
- Primer P-70 : IPS Corp.
- Cleaner
- Cotton Rag
- Square
- Scale
- Felt-tip Pen
- Tape Measure
- Brush
- Insertion Tool (6” and above)
- Container (Metal Cans to Hold Cement or Primer)

1. Cutting 

Pipe ends must be cut square.
Check the pipe end with a square to make sure it
has been cut squarely.
Note: A diagonal cut reduces bonding area in the most
effective and critical part of the joint.
Wheel type cutters are not generally recommended for large
diameters since they tend to raise flare at the pipe end.
This flare must be removed with a file or deburring tool,
as it will scrape the cement away when pipe is inserted
into the fitting.



2. Deburring

All burrs, chips, filings, etc., should be removed
from both around the pipe before joining.
Use a knife, deburring tool or a half-round coarse
All pipe ends should be beveled from 45 degrees.
Note: Failure to chamfer the edge of the pipe may remove
cement from the fitting socket, causing the joint to leak.


3. Inspection, Cleaning 
Visually inspect the inside of the pipe and fitting
sockets and remove all dirt, grease or moisture
with a clean dry rag.
Check pipes and fittings possible damage such
as splits or cracks and replace if necessary.


4. Test Dry Fit of the Joint
Check pipe and fittings for dry fit before cementing.
The pipe should be inserted to the fitting easily
about 1/3 to 2/3 of the socket depth.

5. Depth-Of-Entry Mark 
Measure the socket depth of the fitting and mark
this distance on the pipe O.D.
This reference mark can be used when joining to
ensure the pipe is completely bottomed into the
fitting during assembly. In addition, draw the line
for a guide outside the reference line.



6. Priming

This process is necessary to penetrate and soft-
en both pipe and fitting socket surfaces for ce-
menting process.

Apply primer to the surface of the pipe and fitting
Move quickly without hesitation to the cementing
procedure while surfaces are still wet with primer.


7. 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 while
the primer is still wet.
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: Read all warnings on primer and cement cans.


8. Joint Assembly 
Work quickly, insert the pipe into the fitting
socket bottom with a one-quarter turn to evenly
distribute the cement.
Do not continue to rotate the pipe after it has
reached the bottom of the fitting socket.
A good joint will have sufficient cement to make a
bead all the way around the outside of the fitting
Hold the pipe and fitting together for a minimum
of 30 seconds to make sure the pipe does not
move or push out of the socket.


9. Cleanup 
Remove all excess cement from around the pipe
and fitting with a dry cotton rag while the cement
is still soft.


10. Initial Set Time
Initial set time is the necessary time to allow before the joint can be carefully handled.

Temperature RangePipe Sizes
1/2" to 1-1/4"
Pipe Sizes
1-1/2" to 2"
Pipe Sizes
2-1/2" to 8"
Pipe Sizes
10" to 15"
Pipe Sizes
60 to 100°F2 min5 min30 min2 hrs 4 hrs
40 to 60°F5 min10 min2 hrs8 hrs16 hrs
0 to 40°F10 min15 min12 hrs24 hrs48 hrs

Note: In damp or humid weather allow 50% more set time.

11. Joint cure time

Joint cure time is the necessary time to allow before pressurizing system.

Joint Cure Schedule

Inch-Ib unit

Temperature range
during assembly
and cure periods
Pipe Sizes
1/2" to 1-1/4"
Pipe Sizes
1-1/2" to 2"
Pipe Sizes
2-1/2" to 8"
Pipe Sizes
10" to 15"
Pipe Sizes
up to 150psiup to 150psiup to 150psiup to 100psiup to 100psi
60 to 100°F1 hour2 hours6 hours48 hours 72 hours
40 to 60°F2 hours4 hours12 hours96 hours6 days
0 to 40°F8 hours16 hours72 hours8 days14 days

S I unit

Temperature range
during assembly
and cure periods
Pipe Sizes
1/2" to 1-1/4"
Pipe Sizes
1-1/2" to 2"
Pipe Sizes
2-1/2" to 8"
Pipe Sizes
10" to 15"
Pipe Sizes
up to 1Mpaup to 1MPaup to 1MPaup to 0.7MPaup to 0.7MPa
15 to 40°C1 hour2 hours6 hours48 hours 72 hours
5 to 15°C2 hours4 hours12 hours96 hours6 days
- 5 to 5°C8 hours16 hours72 hours8 days14 days

Note: In damp or humid weather allow 50% more cure time.

Helpful Hints
1. Work quickly and carefully.
2. Use liberal amounts of fresh cement.
3. Do not attempt cementing in the rain or in the presence of moisture.
4. Do not cement when the temperature is below 40°F or above 90°F under direct sunlight.
5. Do not take shortcuts or bypass recommended steps.
6. Consult your cement manufacturer for specific questions or problems

Applicable Specification for Solvent Welding
ASTM D-2564 : Solvent cements for PVC plastic pipe and fitting
ASTM D-2855 : Marking solvent cemented joist with PVC pipe and fitting
ASTM F-493 : Solvent cements for CPVC plastic pipe and fitting
ASTM F-656 : Primers for use in solvent cement joints of PVC plastic pipe and fitting

Hydrostatic Pressure Testing


1. The last assembled joint should be fully cured before filling the system with water.

2. All valves and air relief mechanisms should be opened at the ends and elevations. The systemshould be filled slowly, flow velocities should notexceed 1 foot per second. This will prevent surge, water hammer, and air entrapment.

3. Water flow should continue until all entrapped air is completely flushed out of every branch of the system. Maintain the 1 ft/s velocity until every valve is checked. A rapid fluctuation of gauge needle during pressure rise may be an indication that entrapped air still remains in the system. Systems should include the appropriate air reliefand vacuum breaker valves to vent air during normal operation after installation. Entrapped air is major cause of surge and burst failure in plastic piping systems.

4. After filling the system, do not pressurize until the responsible engineer is present to witness the test. All personnel in the vicinity of the system should wear safety glasses and hard hats. High voltage electrical equipment should be shielded from a possible spray.

5. The piping system should be pressurized to 125% of its maximum design operating pressure.This pressure must not exceed 1.5 times the working pressure of the lowest rated component in the system, i.e. flanges, unions, thread parts, valves, etc.

6. The pressure test should not exceed 1 hour. This should provide enough time to inspect all joints for leaks. If leaks are found, pressure must be relieved to repair the leak. The system should then be recharged and retested. Consult the factory if you have any questions concerning these steps.



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, swab, or roller must be used.