# calculating k values pipe fittings singapore

### Some Friction Loss Tables

Example: Determine L (friction loss in pipe fittings in terms of equivalent length in feet of straight pipe). Assume a 6" angle valve for Schedule 40 pipe size. Select the appropriate K value for such and select D and f for Schedule 40 pipe from the table below where K is the pipe diameter in feet.

### Calculation aids - KE KELIT Europe and Singapor

This method is used for calculating the pipe sizes for standard installations. DIN 1988/300 is generally used for calculating the sizes in specific projects such as hospitals, health treatment centres, hotels, schools. This method is used for both hot and cold water.

### K Values For Pipe Fittings, K Values For Pipe Fittings

There are 80 k values for pipe fittings suppliers, mainly loed in Asia. The top supplying countries or regions are China, Singapore, and South Africa, which supply 97%, 1%, and 1% of k values for pipe fittings respectively. K values for pipe fittings products are most popular in Domestic Market, Southeast Asia, and South Asia.

### Table 6.5 : K-Values for different fittings

Table 6.5 : K-Values for different fittings Type of Fitting Value of K Sudden contractions 0.3* - 0.5 Entrance shape well rounded 0.5 Elbow 900 0.5-1.0 450 0.4-0.75 220 0.25-0.50 Tee 900 take-off 1.5 Straight run 0.3 Coupling 0.3 Gate valve (open) 0.3** - 0.4

### Pipe Flow-Friction Factor Calculations with Excel

Pipe Flow-Friction Factor Calculations with Excel Harlan H. Bengtson, PhD, P.E. COURSE CONTENT 1. Introduction Several kinds of pipe flow calculations can be made with the Darcy-Weisbach equation and the Moody friction factor. These calculations can be

### Equivalent Lengths of Valves and Fittings in Pipeline

Jan 12, 2011· As a matter of fact, there is nothing stopping the engineer from converting the straight pipe length into a K value and adding this to the K values for the valves and fittings before using Equation 7. This is accomplished by using Equation 4, where D is the pipe …

### K Values For Pipe Fittings, K Values For Pipe Fittings

There are 80 k values for pipe fittings suppliers, mainly loed in Asia. The top supplying countries or regions are China, Singapore, and South Africa, which supply 97%, 1%, and 1% of k values for pipe fittings respectively. K values for pipe fittings products are most popular in Domestic Market, Southeast Asia, and South Asia.

### PVC - Friction Loss in Fittings and Equivalent Length

PVC Pipes Schedule 40 - Friction loss and Velocity Diagrams - Friction loss (psi/100 ft) and velocity for water flow in plastic PVC pipe schedule 40 ; Resistance and Fittings Equivalent Length in Hot Water Systems - Equivalent length of fittings like bends, returns, tees and valves in hot water heating systems - equivalent length in feet and meter

### Water Control Valves - Calculating K v Values

The table below can be used to estimate the K v values for process control valves used in water systems.. Go to the left column and select the pressure drop for the valve; Go right in table close to the actual water flow.

### Table 3 - Friction Losses Through Pipe Fittings in Terms

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 ½" 1.5 1.4 1.1 .77 3.4 3.8 .35 16 8.4

### Calculating Pipe Expansion and Contraction - CIS Blog

This usually happens when pipe expansion or contraction is restricted by improperly designed piping systems or pipe support. So how can one account for this dimensional change? The answer involves a little math. There is a formula some engineer or other brainiac type came up with to figure out the extent a pipe might expand or contract.

### 2-k Method For Excess Head Loss In Pipe Fittings - Industrial

2-k Method For Excess Head Loss In Pipe Fittings - posted in Industrial Professionals: Dear All,Crane paper 410M gives method for finding equivalent length of pipe fittings for fully turbulent flow based on friction factors for fully turbulent flow as given in Appendix A-26. The Crane method however does not give an idea about how to calculate excess head loss or resistance coefficient K when dealing with …

### PVC - Friction Loss in Fittings and Equivalent Length

PVC Pipes Schedule 40 - Friction loss and Velocity Diagrams - Friction loss (psi/100 ft) and velocity for water flow in plastic PVC pipe schedule 40 ; Resistance and Fittings Equivalent Length in Hot Water Systems - Equivalent length of fittings like bends, returns, tees and valves in hot water heating systems - equivalent length in feet and meter

### Friction Losses in Pipe Fittings Resistance Coefficient K

Type of Fitting K Value Disk or Wobble Meter 3.4 - 10 Rotary Meter (Star or Cog-Wheel Piston) 10 Reciproing Piston Meter 15 Turbine Wheel (Double-Flow) Meter 5 - 7.5 Bends w/Corrugated Inner Radius 1.3 - 1.6 times value for smooth bend Example: Determine L (friction loss in pipe fittings in terms of equivalent length in feet of straight pipe).

### Pressure Loss Coefficients of 6, 8 and 10-inch Steel Pipe

Pressure Loss Coefficients of 6, 8 and 10-inch Steel Pipe Fittings By Chengwei (Alex) Ding, Luke Carlson, Christopher Ellis and Omid Mohseni The results of the study show that the K-value of long elbows is smallest for larger pipe fittings and increases as the pipe fitting size decreases. For branching flows in Tees, the

### Flow and pressure drop in valves and fittings. Valve …

Resistance coefficient K, valves and fittings head loss and flow velocity | Pipe equivalent length L/D Pressure drop or head loss is proportional to the velocity in valves or fittings. For the most engineering practices it can be assumed that

### Method estimates K values quickly | Oil & Gas Journal

A new method to estimate equilibrium phase distribution ratios (K values) improves on the shortcomings of older methods. The method is based on the generalized fugacity charts of Lewis, Kay, and

### Major and Minor Losses Due to Pipe Diameter and Fitting

in a K value of 0.177, while the sudden contraction produced a K value of 0.755. Keywords: Head loss, pipe fittings, frictional factor, minor loss coefficient. Introduction By know the major head losses due to pipe diameter over a length of pipe and the minor head

### K-Factor formula for fire sprinklers - Hydraulic calculation

The formula above is theoretical and once we take into account the effects of friction, turbulence and the contraction of the water stream the formula can be simplified to what we know as the k-factor formula for fire protection system by reducing its complexity to a single constant "k". The K …

### K Value and Pipe Length Calculator

This calculator shows the relationship between the K value and pipe length. The K value for various fittings has been arrived at through experimentation. For any valve, a length over diameter (L/D) coefficient can be determined by equating the pressure drop through the valve to the equivalent length of pipe measured in pipe diameters.

### Determination of the KL for Laminar Flow in Square and Circular Pipe Fittings …

Ha Dinh and Lisa Dahl Fall 2007 CHEM E 499, Finlayson 2 I. Introduction The pressure drop coefficient K L is a parameter used for calculating the excess pressure drop for laminar flow in non-standard geometries. K L accounts for the bends in pipe geometries by

### Quality valve solutions for drinking water, wastewater

Our app makes calculating flow, consumption, water loss and emission a walk in the park. At AVK we strive to make it easy to do business with us. Therefore, we have developed an AVK Toolbox app with calculation tools. Learn more and find download links here. Stay updated on.

### Flow and pressure drop in valves and fittings. Valve

Resistance factor K calculation for elbows, bends, tees, pipe entrance, pipe exit, pipe reducers, pipe enlargement. Calculator The head loss due to resistance in valves and fittings are always associated with the diameter on which velocity occurs.

### Piping Systems - Engineering ToolBox

Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more • Valve Standards . International standards for valves in piping systems . Compression Ratio - Compressed vs Free Air . The compression ratio is the ratio pressure of …

### PVC Resistance Coefficient, K - Pipelines, Piping and Fluid …

2004/12/6· BobPE, I''ll try. The author claims that calculating the "loss coefficient" K f in the irreversible energy dissipated by friction, e f = ΣK fi V i 2 /2, by using three constants based on the type of fitting, its diameter and the Reynolds nuer, which also depends on flow

### Home - IRAS

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