COMPLIANCE INFO_1999-2005 - Laserfiche WebLink

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loSECTION 6 ♦ Installation ®„ Blow Dryer c. Align and lock the joint. For 2" (50 mm)pipe, in- sert spigot into the bell until surfaces touch,then ` push and / turn at the same time 1\� until a lock is achieved (see Fig. Bell End Spigot t 1.6.12). Only a FIGURE 1.6.10 quarter turn to a half turn collar is used to prewarm,place the joint together dry, is usually FIGURE 1.6.12 then heat the O.D.of the bell to avoid contaminat- needed. ing the spigot. CAUTION: Do not use chemical On 3"and 4" (75 mm and 100 mm)diameter pipe, heat packs for prewarming. or on fittings, pushing and turning to lock the joint is impractical, and driving force must be used. b. Brush adhesive on both surfaces, applying a thin uniform coating(see Fig. 1.6.11). Adhesive should If the adhesive or the pipe surfaces are cool, push and hold for a few seconds to allow time for the ad- hesive to start flowing out of the tapered joint. If additional force is needed, a rubber mallet or a strong piece of wood and a hammer to drive the pipe together is the preferred method. d. Check lock up by moving free end of pipe in an up- and-down or side-to-side motion. The movement must be sufficient to move the joint being checked. No movement should be visible in the joint. If any movement exists, the joint is not locked up, and the joint assembly procedure must be repeated. ® When using a hammer, place a strong board FIGURE 1.6.11 (2X4)flat across the bell. The always be worked into the machined surface by ap- first few raps plying pressure during application. This will "wet should be Wood out"the machined surface and maintain the re- light to pre- quired thin bond line. Be sure that adhesive is vent any deep down into the bell past the insertion depth tendency of FIGURE 1.6.13 and that all machined taper surfaces on the spigot the joint to and the cut end of the pipe are uniformly covered. back out Excess adhesive will make the joint more diffi- (see Fig. 1.6.13). cult to lock and can result in a flow restriction. Wet out the machined surfaces with a thin layer of When the adhesive starts squeezing out of the adhesive to produce a good bond. To prevent cont- joint, use stronger blows. Proper pipe alignment is amination, apply adhesive to the bell first. important. Maintain back pressure against previ- ously assembled joints to avoid shaking them Connections into fittings are made using the normal loose. After the joint has started to make up, hit bell and spigot method. A threaded(T.A.B.)spigot can until no further engagement can be seen at the be bonded into a smooth bell(fitting),or a smooth joint. When engagement stops, the joint is locked. spigot can be bonded into a threaded(T.A.B.)bell. Check for proper engagement by using the method described in paragraph d. 12 04 Installation Instructions