Laserfiche WebLink
Assembly Instructions <br />Before you begin assembly, clear the inside diameter of the riser pipe of any burrs, improper reaming, or foreign material. <br />Failure to adequately clean the inside of the riser pipe may damage or prevent the valve from functioning properly. <br />1. Remove the fill cap, adaptor, and existing drop tube <br />from the riser pipe. Measure from the inside top of <br />the tank to the top of the riser pipe (see Dimension <br />"A" in Figure 2 & 3). <br />Top of Riser with Adaptor Removed <br />705 Spill Containment <br />r. <br />"A" <br />Riser Pipe <br />Tank <br />Figure 2 <br />Top of Riser with <br />Adaptor Removed <br />Riser Pipe „A„ <br />Manway Height <br />95% of a Full Tank <br />Tank <br />Figure 3 <br />2. Determine the 95% shutoff point for your tank from <br />the tank chart provided with the tank or from a <br />calibrated gauge stick. To determine your actual <br />"B" dimension, subtract the 95% level height from <br />the overall tank diameter (tank diameter (inches) <br />- 95% level (inches) = "B" dimension). The chart <br />below is provided for reference only (see Figure 1). <br />Your actual "B" dimension will vary slightly based <br />upon your actual overall tank diameter head and <br />bulkhead design. <br />Tank Diameter <br />Appx. Dimension <br />"B" for 95% Shutoff <br />4 feet (122 cm) <br />5" (127 mm) <br />5 feet (152 cm) <br />6" (152mm) <br />6 feet (183 cm) <br />7 1/2" (191 mm) <br />7 feet (213 cm) <br />8" (203 mm) <br />8 feet (244 cm) <br />9 1/2" (241 mm) <br />9 feet (274 cm) <br />10 1/2" (267 mm) <br />10 feet (305 cm) <br />13" (330mm) <br />12 feet (366 cm) <br />14" (356 mm) <br />Be certain to add the manway height to the "B" dimension <br />when the 708 Auto Limiter is used in manway applications <br />(see Figure 3). <br />3. To determine the correct length of the upper drop <br />tube add dimension "A" to "B" and subtract 4" <br />(102 mm). <br />+ - 4"(102 mm) _ <br />"A" "B" "C" (Drop Tube Length) <br />For tanks with manways, add dimensions "A" to "B" to <br />manway height and subtract 4" (102 mm) to get the drop <br />tube length. <br />_+_+ -4" _ <br />"A" "B" Manway Height (102mm) "C" (Drop Tube <br />Length) <br />4. Mark the dimensions on the upper drop tube. <br />4a. For dual point applications, measure down from the <br />flange and mark dimension "C" on the drop tube <br />(see Figure 4). <br />4b. For coaxial installations, measure down from the <br />bottom side of the top adapter's supporting lugs <br />and mark dimension "C" on the drop tube (see <br />Figure 5). For coaxial installations, oo to Step 7. <br />Figure 4: Measure from Flange <br />Figure 5: Measuring for Coaxial Installations <br />5. Wrap the paper cutting and drilling template tight <br />around the upper drop tube with the bottom's cut <br />edge aligned with the mark from Step 4. Tape the <br />template to the drop tube (see Figure 6). <br />5 <br />