Wastewater Guidelines for Sizing Features • These guidelines cover the steps which need to be taken to accurately select the correct sewage pump and applicable systems to use in sewage ejectors.
Guidelines for Sizing Figure 2. System Capacity System Capacity refers to the rate of flow in gallons per minute (gpm) necessary to efficiently maintain the system. The “Fixture Unit” method is suggested for determining this figure. This approach assigns a relative value to each fixture or group of fixtures normally encountered. Determination of the required System Capacity is as follows: • List all fixtures involved in the installation and using Figure 1, assign a Fixture Unit value to each.
Guidelines for Sizing Figure 3. Figure 4. Plastic Pipe: Friction Loss (in feet of head) per 100 Ft Req'd Pump Capacity GPM 1 2 3 4 5 6 8 10 15 20 25 30 35 40 45 50 60 70 80 90 100 125 150 175 200 250 300 350 1-1/4" ft .10 .21 .35 .51 .71 1.19 1.78 3.75 6.39 9.71 13.62 18.17 23.55 29.44 1-1/2" ft .10 .16 .24 .33 .55 .83 1.74 2.94 4.44 6.26 837 10.70 13.46 16.45 23.48 2" ft .10 .17 .25 .52 .86 1.29 1.81 2.42 3.11 3.84 4.67 6.60 8.83 11.43 14.26 2-1/2" ft .11 .22 .36 .54 .75 1.00 1.28 1.54 1.93 2.
Guidelines for Sizing Figure 5. Friction Factors for Pipe Fittings In Terms of Equivalent Feet of Straight Pipe TEE TEE SWING NOMINAL 90° 45° (THROUGH (BRANCH CHECK GATE PIPE SIZE ELBOW ELBOW FLOW) FLOW) VALVE VALVE 1-1/4 3.5 1.8 2.3 6.9 11.5 1-1/2 4.0 2.2 2.7 8.1 13.4 0.9 1.1 2 5.2 2.8 3.5 10.3 17.2 1.4 2-1/2 6.2 3.3 4.1 12.3 20.3 1.7 3 7.7 4.1 5.1 15.3 25.5 2.
Guidelines for Sizing BASIN SIZING Figure 6. BASIN DIAMETER (inches) 18" 24" 30" 36" 42" 48" GALLONS/FOOT OF BASIN DEPTH 13.2 23.9 36.7 52.9 72.0 94.0 GALLONS IN 2-1/2' OF BASIN DEPTH 33.0 59.7 91.7 132.2 180.0 235.
Guidelines for Sizing Example Sizing Problem What Pump Capacity would be required to handle the drainage from a 4 bathroom home, also including a dishwasher, a washer, a laundry tray, a kitchen sink, water softener, basement shower, a 13,000 gallon pool, and a bar sink (1-1/2" trap)? 1.
Guidelines for Sizing Summary Worksheet Number of Fixture Units ______________________________________ Flow Rate - Gallons Per Minute ______________________________________ Total Head Required ______________________________________ Pump Selection ______________________________________ Typical Single Family Dwelling Sewage Pump Chart Note: The data contained herein is for reference only. Proper sizing and selection of sewage pumps requires consideration of many factors.
Guidelines for Sizing Figure 7. Flow - Liters/Minute 0 118 236 354 472 590 80 708 826 24 70 18 20S 50 40 18S 30 ES60 12 16S Head - Meters Head - Feet 60 14S 20 6 ES50 10 ES40 10SN 9SN 0 0 20 40 60 0 80 100 120 140 160 180 200 220 Flow - Gallons/Minute P.O. Box 12010 Oklahoma City, OK 73157-2010 Phone: 1.800.701.7894 Fax: 1.800.678.7867 www.LittleGiantPump.
