The size of pipes, fittings, flanges and valves are often given in inches as NPS - Nominal Pipe Size, or in metric units as DN - 'Diametre Nominal'. Pipes are made of a wide variety of materials - like galvanized steel, black steel, copper, cast iron, concrete, and various plastics ...
PEXSUPPLY RESOURCES GPM Chart for Copper & PEX Pipe Tubing Size/Type Minimum Flow Rate1 (gpm) 3/8" Copper 1/2" Copper 3/4" Copper 1" Copper 1.25" Copper 1.5" Copper 2" Copper 2.5" Copper 3" Copper 1.0 1.6 3.2 5.5 8.2 11.4 19.8 30.5 43.6 3/8" PEX 1/2" PEX 5/8" PEX 3/...
Since you can also use schedule 40 pipe for a return line, you can check the schedule 40 chart again to determine the proper pipe size. By looking in the 15 feet per second column of Table 2, you find that a 1-inch return line can deliver up to 40.6 GPM without exceeding 15 feet ...
Nominal Pipe SizeWeight of PipeWeight of Pipe filled with Water (in)(mm)(lbs/ft)(kg/m)(lbs/ft)(kg/m) 3/8100.60.90.71.0 1/2150.81.20.91.2 3/4201.11.71.32.0 1251.72.52.13.0 1 1/4322.33.42.94.3 1 1/2402.74.03.65.3 2503.65.45.07.5 ...
VELOCITY TO GPM CONVERSIONS in standard wall pipes* Flow Velocity (ft/sec) x Factor (1 ft/sec) = GPM Typical HVAC Design Maximum Flow = 4 to 8 ft/sec Nominal GPM @ GPM @ GPM @ GPM @ GPM @ GPM @ Pipe Size 1 ft/sec 2 ft/sec 4 ft/sec 8 ft/sec 10 ft/sec 12 ft/sec...
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The owner noticed extremely high gas bills as compared to the first floor. A system survey found that the pump size for the second floor was incorrect. A recalculation was made and a new pump was installed. The gas bill for the second-floor unit actually began to be less than the first...
Overall head loss in a pipe is affected by a number of factors which include the viscosity of the fluid, the size of the internal pipe diameter, the internal roughness of the inner surface of the pipe, the change in elevation between the ends of the pipe and the length of the pipe ...
6.15B for reservation length Δ/l between steel anchor pipe orifice and aluminum strand. At the time of passing the aluminum pipe, rotate along the stranding direction of conductor aluminum strand with length Δ/l being 3 cm. Sign in to download full-size image Figure 6.15. Insert strain ...
The flow rate needs to be 20 gpm. Connections of pipe and valve are flanged, with the 6 × 90° elbows added in the line. Solution Pump suction velocity = 2 ft/s (selected in accordance with good pump suction practice, from Table 4-12 or 4-13). Estimated flow velocity for assumed ...