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AFL INDUSTRIES,INC. <br /> RIVIERA BEACH,FLORIDA <br /> SERVICE INSTALLATION Page 3 OF 3 <br /> MANUAL INSTRUCTIONS <br /> PRODUCT: HANDLING,STORAGE AND FIELD <br /> ASSEMBLY OF PLASTIC PIPING <br /> THREADED JOINTS <br /> Take-down piping systems and temporary lines usually are installed with threaded connections. Threading reduces the effective <br /> wall thicknesses of the pipe and results in lower pressure ratings. Threaded connections should be used only with Sch. 80 or <br /> heavier pipe. <br /> "Tite-Joint"Thread Tape should be used for all threaded connections,because screwed fittings tend to bind after long periods of <br /> service. Wrap tape around male threads,overlapping about'/4",until thread length is covered. "Teflon"-base thread lubricant also <br /> can be used. It is inert and retains its lubricating qualities indefinitely. Squeeze a small amount on pipe male threads,spread with <br /> a brush and screw fitting onto pipe. <br /> FLANGED JOINTS <br /> Flanging,one of the earliest methods for joining plastic pipes,continues to be used extensively,especially for process lines that <br /> must be dismantled frequently. Plastic flanges and flanged fittings are available in a full size range and may be attached to pipe by <br /> solvent welding,threading or fusion welding. <br /> Flanging is the preferred method of joining plastic-lined piping. <br /> Soft rubber gaskets generally should be used between the flanges. <br /> RECOMMENDED FLANGE BOLT TORQUE FOR PLASTIC FLANGES <br /> FLANGE BOLT TORQUE FLANGE BOLT TORQUE <br /> SIZE DIAMETER FT-LB PSI* SIZE DIAMETER FT-LB PSI* <br /> 1/2" 1/2" 10-15 2'/z" 5/8" 20-30 <br /> 3/4" 1/2" 10-15 3" 5/8" 20-30 <br /> 1" 1/2" 10-15 4" 5/8" 20-30 <br /> 1'/4" 1/2" 10-15 6" 3/4" 33-50 <br /> 1'/z" 1/2" 10-15 8" 3/4" 33-50 <br /> 2" 5/8" 20-30 10" 7/8" 53-75 <br /> *To give bolt stress of 10,000- 15,000 psi. Bolt torque refers to a well lubricated bolt. <br /> SUPERSEDES: I-O-M: 0.03 <br />