Laserfiche WebLink
Appendix 8 <br />7150 Overfill Valve in Tanis Shut off Level Worksheet <br />Important: This is meant to be supplemental worksheet and nota substitute to fallowing the installation <br />manual instructions. All length measurements are in inches, Please contact the Authority Having Jurisdic- <br />tion (AHJ) and review total, state, and national codes to determine the regulatory requirements governing <br />shut-off capacity 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 7150 inlet tube flange to the cast <br />lug in the 7150 body (see figures), upper tube length. <br />Mote: the Upper Tube Length trust be at least 16" to in- <br />clude the protective bend in the tube, <br />Dlstanre from the 7150 inlet tube flange to the tap and <br />bottom of laver tube, valve ;r ,gtlj. <br />(w)= 5 <br />(u)=� <br />Distance from the 7150 inlet tube flange to the bottom <br />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 & 617P models add 0.6") <br />From the tank calibration chart provided by tank manu- <br />facturer Find the dipstick number (Y) which corresponds <br />to the 1 DD%volume, <br />(Y)= _ I)` <br />1. To determine shut-off percentage: <br />Subtract upper tube length (D) from distance to tank <br />bottom (8) <br />JX) = (s) W (D) - 2" =- � .3 <br />Using the tank calibration chart provided by the tank <br />rnanufacturer 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 = 96(79 <br />(Y) tank capacity in gallons =41i F <br />50% = (x) capacity 1 (Y) capacity x{00 = 0 <br />-rte "`;•• <br />#L <br />Upper <br />Tube <br />(W) Valve <br />Length, tf <br />bottom of 1� <br />cut <br />iA) it <br />To Tank <br />(Y) <br />Tank <br />{U) Valve Chart <br />Length, 1009 kl <br />top of cut Volume 41 <br />Dipstick <br />}f <br />it <br />1Fj <br />{dote: The overfill valve must be instalted per AHJ require- <br />ments and ail applicable local, state, and national codes. If <br />the overfill valve is set above the allowabte shut-off percent- <br />age the overfill valve roust be removed and replaced. For <br />reference 40 CFR part 280 Subpart S Section 286.20 overfill <br />valves should be set to a maximum of 95%. <br />21 <br />