Steel Pipe Fitting Equivalent Length

Your section of 2 pipe has 2 x gate valves 2 x 90 elbows 4 x straight true tee s and 12 branch tee s select 2 for nominal pipe size and enter 2 gate valves 2 90 elbows 4 straight true tee s and 12 branch. The weakness of the equivalent length method is that. Please set your resolution to this if it is not set so.

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Steel pipe fitting equivalent length. Equivalent lengths of fittings like. If the valve is connected to 2 sch 40 steel pipe with an inside diameter of 0 172 ft or 52 5 mm then the equivalent length of the globe valve in terms of the steel pipe is 320 x 0 172 55 ft or 320 x 52 5 16800 mm. Return bends regular and long radius. Then depending on the c value and the pipe inside diameter in relation to steel schedule 40 inside diameter there are factors to multiply the equivalent length by.

The minor loss in a system component can be converted to the equivalent length of a pipe or tube that would give the same major head loss. Fittings such as elbows tees and valves represent a significant component of the pressure loss in most pipe systems. This application is a calculator for calculating equivalent length of fittings and valves. This article details the calculation of pressure losses through pipe fittings and some minor equipment using the equivalent length method.

If the equivalent length is calculated from these k values and from the moody friction factor for clean commercial steel pipe then the 2 bend has an l e d value of 13 8 and the 20 bend has value of 14 0 a change of just over 1 and a strong recommendation for the equivalent length method. Equivalent length of fittings and valves the application is best viewed using a resolution of 1024x768 pixels. The strength of the equivalent length method is that it is very simple to calculate. Copper tubes pressure loss in fittings and valves expressed as equivalent length of tube copper tube fittings and equivalent lengths in feets of straight tube.

Table 3 friction losses through pipe fittings in terms of equivalent lengths of standard pipe size of pipe small dia standard elbow medium radius elbow long radius elbow 45 elbow tee return bend gate valve open globe valve open angle valve open length of straight pipe giving equivalent resistance flow 1 5 1 4 1 1 77 3 4 3 8 35 16 8 4. Friction loss in fittings equivalent length of pipe feet size fittings 1 2 3 4 1 11 2 2 3 4 6 8 10 12 type fittings 90º standard elbow 1 6 2 1 2 6 4. Fluid flow and pressure drop pipe lines fluid flow and pressure loss water sewer steel pipes pvc pipes copper tubes and more. Tables 1 4 show the equivalent lengths as specified by the nfpa 15 standard for a variety of valves and fittings for schedule 40 steel pipe with a c value of 120.

For calculating pressure drop across a pipe route we need to calculate the total. Elbows regular 90 o long radius 90 o regular 45 o. Calculate friction losses for fittings and valves in a section of pipe expressed in equivalent length of pipe in feet. Tees line flow and branch flow.