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%W 'ai bars at the proper locations. Secure all dispenser sump - - The V-200, two inch, vent/vapor recovery piping uti- lids to the bases with the screws provided and align the lizes standard 2" flexible entry boots for sump entrance emergency shut-off naives, making sure the shear section and departure, and cur V-300, three-inch pipe utilizes is at the proper height. standard 3" entry boots. Because the fittings are non- metallic, connections can be made outside of sumps. You're now ready to pressure test the primary piping. To install V-200 or V-300 vent/vapor recovery pipe, fol- Testing Primary low the same procedure as the product pipe. Roll out the piping and cut to length, making sure the cut is square. Poly-Tech pressure piping systems should be tested to 50 If secondarily contained pipe is used, follow the same to 75 p.s.i, depending on local codes. Normally, 60 p.s.i procedures discussed earlier for removing the secondary is used. Suction piping systems should be isolated from containment jacket. Vlake sure the proper slope has the tank and tested to at least 10 p.s.i. been established, with no dips in the trench bedding. The reinforced nylon king nipples are threaded into After piping is pressurized. soap all joints and fittings. If required end connections and/or the special VVB Ion- a leak in the threaded connections are discovered, relieve nection box. (Metal fittings are available as an option the air pressure, retighten and repressurize. but must be wrapped in protective tape to prevent cor- rosion if not located in a sump). Use Teflon tape or a The duration of the air pressure test will vary. Check thick coating of Teflon pipe dope to insure a good seal. with the local authority or inspector to verify local Coat the hose barb with Loctite 515 gasket eliminator. requirements. A minimum of 1 hour should be observed. The V-200, 2" pipe uses 2 heavy-duty stainless steel band clamps, while the V-300, 3" pipe uses 3 of these After the primary piping pressure test is complete, make sure all secondary air test boots are slid forward, allow- clamps. ing the secondary jacket to be open to the atmosphere, Measure back from the end of the pipe and mark for allowing any liquid in the sumps or secondary contain- clamp placement. Mark the 2" pipe at 3/4 in. (2 cm.) meet jacket to drain to the low point in the system, where leak detection sensors should be installed. and 2 in. (5 cm.). Slide the two band clamps onto the pipe and lever the pipe fully onto the barb. Place the clamps just behind the marks, and tighten firmly using Vent/Vapor Recovery a 5/16" socket or nutdriver. _ . Piping Installation i Another area to cover is our V-200 and V-300 '' vent/vapor recovery piping. If the installation requires }Y1 t l Stage II, vapor recovery piping can be installed with these products. as well as the tank vents required on every installation. 7i The V-series vent and vapor recovery piping goes in just as quick and easy as our product piping, and can be For clamp placement on V-200,mark back at 3/4 inch and installed before or after the product piping. 2 inches.Place the clampsj=in front of these marks and tighten Finely 121