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For the V-300, 3 pipe, place 3 marks, at 1 2" and 3" P-300-5C Pressure Piping inches (2.5. 5 and 7.5 cm.). and follow the same proce- Installation dure. Poly-Tech V-series piping is normally air pressure tested at 5-10 p.s.i. In addition. perform any flow or The final product to cover is P-300-SC, 3" pressure pip- blockage tests required prior to backfill. ing. P-300-SC has a large volume secondary contain- Che Poly-Tech VVB connection box, or octagon fitting, went jacket and uses a clamp-type fitting.This brass fit- is another unique product from APT It is custom pro- ting is also used on APT's 3" and 4" offset fill piping. duced at the factcry for each installation, and allows for The fitting installs just like the brass fitting for the P- manifoiding of tanks, above-ground plastic to above- 175-SC, except that there is a spacer bar for use on the ground steel vent connections, or tying the Stage II thicker walled P-300 to ensure that it goes metal to vapor recovery systems into the tank vent system, using metal. This spacer is not used with our V-Series, vent a pressure/vacuum relief valve on the vent riser pipe. piping or R-series remote fill piping. These units are assembled and pressure tested at the fac- tory so that field installation is a snap. The secondary jacket on P-300-SC products must be supported to allow proper sealing of test and entry boots. An 8" long piece of tubing is included, which is inserted to provide reinforcement for both test and entry - - boots. This tube should extend under the entry boot *_ clamp so that it will not seal off the secondary when tightening the boot. You must locate the secondary cut- "- back accordingly to ensure this lines up properly. Y Trouble-Free Installations APT's VVB-100,vent/vapor recovery connection box. Poly-Tech piping can be installed in as little as one-third the time of double-walled rigid fiberglass piping. There After primary piping pressure test is completed and all are no joints to taper,clean,glue, or cure. Since the pipe sumps are assembled, the backfilling process can begin. arrives at the job site with the secondary jacket already Make sure to leave at least 4"of separation between each in place, both primary and secondary PP t e are installed piping run, and that the backfill material is packed at the same time, making one pass down the trench. tightly around the pipe. Remember, any crossovers in the piping runs should be separated by at least 3" of backfill. The Poly-Tech system design allows for retesting of the secondary jacket at any time during the life of the facil- Once again, approved backfill materials are pea gravel or ity. Simply slide all air test boots over the end of the sec- tumbled crushed rock, having a natural round surface ondary containment jacket and repressurize. and practice size of not less than 1/8" or larger than 3/4", or clean washed sand. Sand must be compacted. As with all piping systems, the key to a long life, trouble free installation is making sure that all equipment is installed properly. We have given you the proper tech- niques to make long-life, trouble free installations. 122