around the inside as well as the outside of the pipe. A slight chamfer (bevel) of about 10°- 15° should be added to the outside end to allow easier insertion of the pipe into the fitting. Failure to chamfer the edge of the pipe may scrape cement from the fitting socket, causing the joint to leak.
Test dry fit of the joint:
Tapered fitting end and the fitting socket bottom. For saw cuts on pipe too large for a miter box, a pipe wrap should be used and a line drawn with a marker.
Deburring:
Use a plastic deburring tool or file to remove burrs from the cut end of the pipe. Be sure to remove all burrs from
(Continued from page 26)
Patented
• Removes scale from pipe work • Removes scale from heat exchangers and steam boilers • Saves energy by keeping heating elements scale free • Increases life of capital equipment • Reduces cleaning costs, chemicals & labor • Saves 50% on cooling tower make up water • Saves irrigation water • Provides short term payback
Dealer territories available.
Scalewatcher North America Inc., Oxford PA
Call Toll Free (800) 504-8577 or by email: sales@scalewatcher.com
www.scalewatcher.com
Applications:
Residential • Commercial • Industrial
sockets are designed so that an interference fit should occur when the pipe is inserted about one-third to two-thirds of the way into the socket. Occasionally, when pipe and 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.
Inspection, cleaning and priming:
Visually inspect the inside of the pipe and fitting sockets and remove all dirt, grease or moisture with a clean, dry rag or cloth. If wiping fails to clean the surfaces, a chemi- cal cleaner must be used. Check for possi- ble damage such as splits or cracks and replace if necessary. Marking the depth of entry is a way to check if the pipe has reached the bottom of the fitting socket. Measure the fitting sock- et depth and mark this distance on the pipe O.D. It is recommended that you add a sec- ond mark two inches above this mark as the primer and cement may destroy the first mark. Apply primer to the surface of the pipe and fitting socket using an approved appli- cator, working the primer in the surface of both the fitting socket and pipe O.D. You should continue to vigorously work the primer into these surfaces until you can feel the applicator start to “drag,” indicat- ing a softening of the material. It may take several applications of the primer to effectively break down the surface of the material, but this is a critical step in the cementing process. Move quickly, with- out hesitation, to the cementing procedure while the surfaces are still wet with primer.
(Caution: Primers and cements are extremely flammable and must not be stored or used near heat or open flame. Read all warnings on primer
1
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Cutting
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Deburring
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Test Dry Fit of the Joint
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Inspection, Cleaning and Priming
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Application of Solvent Cement
6
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Joint Assembly
7
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Clean-up and Joint Movement
Forming a joint
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IFC
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