Fulton Heating Solutions, Inc. -- PHW Manual -- 2010-0713
Page 37
Note
Intake PVC piping must be assembled using cement. This will ensure that the
intake is air tight and will not allow contaminates from the boiler room into the
boiler. The cement shall be free flowing and contain no lumps, undissolved
particles or any foreign matter that adversely affects the joint strength or chemical
resistance of the cement. The cement shall not show gelation, stratification, or
separation that cannot be removed by stirring.
Warning
Cements for plastic pipe are flammable liquids and should be kept away from all
sources of ignition. Proper ventilation should be maintained to reduce the hazard
and to minimize breathing of cement vapors. Avoid contact of cement with skin
and eyes.
g) The following procedure for cementing joints (per ASTM D2855) should be
adhered to:
1. Measure and cut PVC pipe to desired Iength.
2. Chamfer end of pipe, removing any ridges or rough edges. If end is not
chamfered, the edge of the pipe may remove cement from the fitting
socket and result in a leaking joint.
3. Clean and dry surfaces to be joined.
4. Test fit joint and mark depth of fitting on the pipe.
5. Uniformly apply liberal coat of primer to inside socket surface of fitting
and male end of pipe to depth of fitting socket.
6. Promptly apply solvent cement to end of pipe and inside socket surface
of fitting. Cement should be applied lightly—but uniformly—to inside of
socket. Take care to keep excess cement out of socket. Apply second
coat to pipe end.
Note
Time is critical at this stage. Do not allow primer to dry before applying cement.
7. Immediately after applying last coat of cement to pipe, while inside
socket surface and end of pipe are wet with cement, insert end of pipe
into socket, turn pipe 1/4 turn to distribute cement evenly, continue to
insert pipe until it bottoms out.
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