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installed between the submersible pump and the pipe adapter, <br />as shown. <br />For coax type connections, a plumbing <br />assembly fitted with a standard plumbing <br />elbow fitting would be connected to a coax <br />pipe adapter. This accommodates the <br />connection of a coax pipe coupling <br />installed on the end of a flexible pipe <br />section. The adapter is attached by first <br />applying the specified thread sealant to the male pipe <br />threads. Then hand tighten firmly followed by two full turns <br />with a pipe wrench. <br />CAUTION: Do not apply the plumbing wrench to the <br />section of the pipe adapter which contains the test port. <br />NOTE: For coaxial fitting NPT threads, use only UL <br />classified thread sealant specifically formulated for <br />gasoline and petroleum products. Do not overtighten coax <br />type fittings. <br />For swivel type piping connections, a <br />plumbing assembly fitted with a standard <br />plumbing elbow fitting would be <br />connected to a swivel or barbed adapter. <br />The arrangement accommodates the <br />connection of a swivel pipe coupling <br />installed on the end of a flexible pipe <br />section. <br />11.1.2 Dual Pipe Lines To Pump Connections <br />This application includes a plumbing tree assembly which <br />interconnects the submersible pump to two flexible piping <br />lines. A typical connection assembly would include a tee fitting <br />or a dual adapter fitting fitted with a ball shut-off valve and two <br />standard plumbing elbows as shown. <br />For coax type connections, a plumbing assembly fitted with <br />two standard plumbing elbow <br />fittings would be connected to <br />two coax pipe adapters. This arrangement accommodates the <br />connection of coax pipe couplings which are installed on the <br />end <br />of two flexible pipe sections. The adapter is attached by first <br />applying the specified thread sealant to the male pipe threads. <br />Then hand tighten firmly followed by two full turns with a pipe <br />wrench. <br />CAUTION: Do not apply the plumbing wrench to the <br />section of the pipe adapter which contains the test port. <br />NOTE: For coaxial fitting NPT threads, use only UL <br />classified thread sealant specifically formulated for <br />gasoline and petroleum products. Do not overtighten coax <br />type fittings. <br />For swivel type piping connections, a plumbing assembly fitted <br />with two standard plumbing elbow fittings would be connected <br />to swivel or barbed adapter. This arrangement is to <br />accommodate the connection of swivel pipe couplings installed <br />on the end of two flexible pipe. <br />10 <br />11 <br />Fle.�MORKS <br />SV OPW FUELING CONTAINMENT SYSTEMS <br />11.2 Suction Supply Systems <br />For suction systems, all flexible piping connections are made <br />directly into the tank. In this application typically a tank <br />manway cover would be fitted with a multitude of female <br />threaded tank fittings. These tank fittings should have pipe <br />fittings, either a standard plumbing elbows or capped tees <br />installed and aligned facing the entry point of the flexible pipe <br />sections. <br />11.2.1 Coax Connections To Tank Fittings <br />Install the coax pipe adapters into the pipe fittings to <br />accommodate the coax pipe couplings installed <br />to the end of the flexible pipe sections. The adapters are <br />attached by first applying thread sealant to the male pipe <br />threads. Then hand tighten firmly followed by two full turns <br />with a pipe wrench. <br />CAUTION: Do not apply the plumbing wrench to the <br />section of the pipe adapter which contains the test port. <br />NOTE: For coaxial fitting NPT threads, use only UL® <br />classified thread sealant specifically formulated for <br />gasoline and petroleum products. Do not overtighten <br />coax type fittings. <br />11.2.2 Metallic Connections To Tank Fittings <br />Install the metallic pipe adapters into the pipe fittings to <br />accommodate the metallic pipe couplings installed to the <br />end of the flexible pipe sections. <br />12.0 DISPENSER SUMP PIPE CONNECTIONS <br />The plumbing connections required inside <br />dispenser sumps can be simple or <br />complicated depending upon the <br />plumbing requirements, dispenser size, <br />and pipe entry locations. Pipe entries that <br />are located considerably off the center <br />line may require the use of flex <br />connectors as riser pipes instead of rigid <br />steel riser pipes. For some dispenser <br />models, the pipe entries are located so <br />close to the wall of the dispenser that product offsets are <br />required. The type of piping application specified shall <br />determine what type of piping connections shall be made <br />inside dispenser sumps. <br />NOTE: Prior to all flexible piping connections in <br />dispenser sumps the riser pipe assemblies must be <br />installed and test boots, if used, must be installed. <br />12.1 Riser Pipe Assemblies <br />Riser pipe assemblies are designed to interconnect one <br />or two flexible pipe sections to the above ground product <br />dispenser. At the top end they may or may not be fitted <br />with a shear valve and are typically mounted to a stabilizer <br />bar. At the low end they may be fitted with either tee fittings <br />or elbow fittings. Refer to the following riser pipe options <br />available with OPW-FCS's flexible piping system. <br />12.1.1 Steel Pipe Riser Measuring: <br />Cutting the steel riser pipe to the proper length will <br />allow the piping to enter the dispenser sump on a straight <br />and level plane and in line with the tees, elbows and <br />adapters. Improper riser length results in stress at the pipe <br />