Laserfiche WebLink
Appendix I <br /> 71 SO Overfill Valve in Tank Shut off Level Worksheet <br /> important This Is meant to be supplemental worksheet and not a substitute to following the Installation <br /> manual instructions . All length measurements are in Inches , please contact the Authorlty. MavingJX(rlsdic- <br /> tion (AHJ) and review local, state, and national •codes to determine the regulatory requirements governing <br /> shut-off cap4clty in your region, as well as take into account other considerations such as extreme tank tilt. <br /> Take the following measurements with the valve in- [ _ <br /> stalled in the tank: <br /> Distance from the 71 SO inlet tube flange to the cast <br /> lug in the 71 SO body (see figures), upper tube length . 1 <br /> Note; the Upper Tube Length must be at least 16" to in- <br /> clude the protective bend In the tube . <br /> (D) 6 y " <br /> Distance from the 7150 inlet tube flange to the top and i <br /> bottom of lowet. bbe,,yalve length . (p) <br /> (W) Upper <br /> (U ) _ . l y 3�8 Tube <br /> Distance from the 71 SO inlet tube flange to the bottom -of the tank, Note; If a tank bottom protector is present it <br /> may be necessary to add this thickness to dimension <br /> (OPW 6111 & 61TP models add 0.6") 0 (W) Valve <br /> (g) = j 70 Length, <br /> bottom of <br /> From the tank calibration chart provided by tank manucut <br /> - c� <br /> facturer find the dipstick number (Y) which corresponds <br /> to the 100% volume, <br /> (v) To(Tank <br /> AND <br /> ao (Y) <br /> 1 . To determine shut-off percentage: Tank <br /> Subtract upper tube length (D) from distance to tank (U) Valve Chart <br /> bottom (8) Length, 100% <br /> (X) (g) _ (D) . 2" _ 40j � <br /> (64 ) � 2 = r7 top of cut Volume <br /> Dipstick <br /> Using the tank calibration chart provided by the tank <br /> manufacturer determine the tank capacity at the cal- <br /> culated (X) dimension and the 100% volume (Y) tank <br /> capacity . <br /> (X) tank capacity In gallons = 1 1 q Q <br /> (Y) tank capacity in gallons <br /> SO% = (X) capacity / (Y) capacity x100 = q y ' y <br /> Mute: The overfill valve must be installed per AM1 require- <br /> ments and all applicable local, state, and national codes. If <br /> [ q0the overfill valve Is set above the allowable shut-off percent- <br /> ._- -.--- -' 'X 1 0 Q �? `/ y y age the overfill valve must be removed and replaced, For <br /> 118 `l g reference 40 CFR part 280 Subpart B Section 280,20 overfill <br /> valves should be set to a maximum of 95%. <br />