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ISD Vapor Flow Meter Installation Installation Steps-Balance Systems Below Shear Valve <br /> Dispenser hydraulics cabinet <br /> I I <br /> I Vapor return line I <br /> from dispenser 1 <br /> I I <br /> I I <br /> Vapor return line <br /> /shear valve i <br /> 01 O 1–O 0----------------I <br /> Top of pedestal island ----- -- – –j <br /> °�4�Q �� �0n- ---------- ---- ---� r_— -----------------I ao D—�Dp"oo <br /> ° O�° �I---- ----- ---- o�Q <br /> ---------------- <br /> �0oQ°p ed ISDVa or Oe �°Do 00 Q� <br /> 0 0� °1SQ� p A e ���° � �0 <br /> �QQ°o d° a0 °�Q /Flow Meter 1d�O °4 OLD., <br /> Q <br /> D <br /> �� 0b°�°' �i Approx. 1 0°�°0�0 °00 <br /> Oo4°�1 10.8 in. I�o�� AL1 D <br /> Q�o 0�00�4° 0Q1 00o4 °�Q o 0 <br /> I 1 <br /> A <br /> I 4 <br /> inches <br /> .— <br /> Approx. I <br /> I Approx. 6 in. ZIA <br /> 1 <br /> 24.8 in. <br /> I I <br /> \ x. <br /> Required'Y'fitting for mo- 12 in. —� <br /> introducing liquid during <br /> TP-201.4 dynamic 1 <br /> backpressure test. <br /> Main vapor/ O O <br /> return line <br /> I I <br /> Dispenser sump <br /> isdWmmbalplumb.aps VERTICAL ACCESS HORIZONTAL ACCESS <br /> FITTING INSTALL FITTING INSTALL View A-A <br /> Figure 3. Example flow meter installations with approximate clearances <br /> 9 <br />