Pressure drop chart fabricated tee strainer sure flow. Pressure drops for models 30, 50, 510, 570 and 72 strainers are all available and in isc sales inventory. Calculate fluid flow and pipe velocities in pipes and tubes. Handling the pressure drop in strainers request pdf researchgate.
Calculate v and q, using the final value for f calculated in step 2 in the darcy weisbach equation 3. Pressure drop curves are based on water flow with standard screens. Find your desired rate of flow gpm on the left hand side of the. See page 102 for the applicable pressure drop calculation. For finer mesh screens that are backed with a perforated sheet, multiply the pressure drops shown at right by the following. Calculation of fluid flow rate, q, for given frictional head loss, hl, pipe diam.
Optimization of large size fabricated ystrainers for. However, in pumped water or viscous fluid systems, the pressure drop can be significant. They are most commonly used in pressurized lines, gas or liquid, but can also be used in suction or vacuum conditions. Probalance range offers a wide variety of flow management systems and static balancing valves, providing the ultimate in accuracy and reliability. Area ratio factor pressure drop due to flow where, pa hessure bop due to area ratio pa x sg sg specific grmlty for the respective fluid used. This version is usable for browsers without javascript also. How do i know when a y strainer needs to be cleaned out. The strainer is a flat plate, with as much 10mm holes as possible punched into it. Y strainer flow rate vs pressure drop y strainers take their name from their configuration. The manufacturer of the heat exchanger specifies that there will be a pressure drop of 5 psi at 500 gpm. Technical documents about pipe flow and pressure drops.
Where cost is of prime importance, a temporary strainer may be installed between flanges in a pipeline. In water service with a 30 gpm flow rate, it will have a 1. One of the most important design considerations when purchasing a strainer is specifying the perforation or mesh size of the straining element. Engineering data screen openings for basket strainers. This paper discusses a model of pressure drop calculation for strainers developed based on the screen opening, viscosity of the fluid, component. Multiply the pressure drop obtained from 1 by the specific gravity of the liquid.
Pressure drop chart temporary cone and basket strainers tc, tb keckley this pressure drop chart is based on the flow of clean water through the keckley strainer styles listed above with screen perforations ranging from 116 through 18. Flow rate vs pressure drop flanged basket strainers pressure drop psi. P obtained from the charts by the corresponding correction factor shown in the cv correction table. As described above the multiplying factor for a 50% clogged basket is 2. Id like to calculate the pressure drop across it, and am.
How to select a basket strainer hayward flow control. Engineering data screen openings for basket strainers purpose if the basket strainer is being used for protection rather than direct filtration,ifcs standard screens will suffice in most applications. Automatic self cleaning filter pressure drop calculations. For example, do not select strainer model wyetpe, size say 1212, quatity 1 in first column and select the same model type and size in second column with quatity 1 to calculate the pressure drop for two same strainer type with same size. To access the working calculator, please sign up for free membership trial. Here is an old approximation for a clean strainer where a cone is equal to 100% of the pressure drop for same.
To calculate total pressure drop the following formula is to be used pressure drop due to area ratio pa pi pi c frompressure culve for respective stramer. This is the ratio of the open area through the strainer basket to the cross sectional area of the pipe. Eaton pipeline strainer pressure drop calculations free download as pdf file. See theoretical pressure drop curves for screen clogging in the technical data section for. Ystrainer flow rate vs pressure drop sure flow equipment inc. To calculate pressure drop through vessels using other than 116 perforated baskets, first calculate the pressure drop using the listed cv, and then multiply the result by the correction factor in the correction factors chart above. However, because of the more circuitous path the liquid must take through a duplex strainer, pressure drop is higher than through the equivalent size single or twin basket strainer. Threaded basket strainer pressure drop liquids sizes 1 2 1 1 2 flanged basket strainer pressure drop liquids sizes 2 24 tel. For screens other than ifcs standard, use the following formula to calculate the ratio free area to pipe area.
Pipe sizing and pressure drop calculations mechanics. A welldesigned basket strainer should have an open area ratio of at least 4 to 1. Calculate pressure drop in filters and strainers separation. There is a branch on the discharge side of the pump that requires 100 gpm. This is an iterative calculation, because an assumed value of q is used to start the calculations. Pipe sizing and pressure drop calculations free download as powerpoint presentation. Handling the pressure drop in strainers request pdf. For example, a 1 strainer with a cv factor of 8 will have a 4 psi pressure loss in a system with a 16 gpm flow rate. Smspressuredropclog theoretical pressure drop curve for screen clogging. Hello everyone,im working on a project where it has been proposed to install a coarse strainer on the suction side of a pump, to prevent large objects damaging the pump. How do i know when a ystrainer needs to be cleaned out.
Spreadsheet calculates values in yellow boxes note. Pressure drop online calculator for mobile and pdaelement of pipe. Obtain water pressure drop from graphs on appropiate product page. Pressure drop online calculator calculation of pressure drops of flowing liquids and gases in pipes and pipe elements laminar and turbulent flow. Ystrainer flow rate vs pressure drop y strainers take their name from their configuration. Pdf prediction of pressure drop in chilled water piping. In that case, the pressure drop will only be calculated based on the quantity mentioned in first column. Y strainer take their name from their configuration. Please refer to each strainer s specification sheet for standard perforation size recommendations. Pressure drop bar100 m and velocy in pe, peh or pvc pipes. Bulletin str9951 pressure drop data basket strainers threaded basket strainer pressure drop liquids sizes 12 to 2 figure 1 flanged basket strainer pressure drop liquids sizes 2 to 24 figure 2 notes. Different basket shapes are available to meet pressure drop requirements. Eaton pipeline strainer pressure drop calculations scribd. Well documented pressure loss calculator for use with basket and tee style strainers.
Pressure drop across coarse strainers posted in industrial professionals. Performing pressure drop calculations are essential for deciding which pipeline strainer is best for your liquid filtration application. Follow its corresponding horizontal line to the point where it intersects the diagonal line indicating the strainer pipe size. The pressure loss across a strainer can be calculated using the systems flow rate and the cv factor for that strainer. Estimate pressure drop across 100 mesh lined basket type strainer provided in a 6. For fluids other than water, multiply the pressure drop. This pressure drop chart is based on the flow of clean water through the keckley strainer styles listed above with screen perforations ranging from 116 through 18. This is a sample of the strainer pressure drop calculator. Flow rate 700gpm viscosity 100cp specific gravity 1 the pressure drop chart for basket strainers indicates a drop of 0.
Strainer are your most economical choice for large debris removal. These obstructions have a pressure drop associated with them. Selection of the filtration mesh filtration mesh is the heart of strainer system and also some selection parameters are explained. Take the pressure loss figure obtained in 1 and recalculate it using the.
Rapid valve closure can result in the buildup of shock waves due to the conversion of kinetic energy of the moving fluid to potential energy which must be accommodated. Filtration mesh is the heart of the strainer system and. How to select a basket strainer selection criteria the first consideration when selecting a hayward basket strainer is the amount of free open area. These charts are for theoretical calculations only.
Technical documents our technical articles on pipe pressure drop calculations and flow rate calculations are provided for reference purposes, to guide the user in their understanding of the equations that are used in the engineering of, and design of pipe systems. Technical information for standard cast pipeline strainers. Estimate clean pressure drop in cone strainer chemical. Modeling a strainer engineered software knowledge base. As the strainer starts trapping dirt, resistance to flow pressure drop will increase. Pressure loss calculator other enter your flow rate, cv value of the strainer, basket mesh size, gravity of your liquid and the viscosity of your fluid is ssu into our nonwater based pressure loss calculator which will compute the pressure loss for liquids with a viscosity other than water. Standard cast pipeline strainers national strainer corp. Strainers should have flow capacities quoted in terms of a capacity index or kvs value.
They are most commonly used in pressurized lines, gas or liquid. Y strainer pressure drop correction factors mesh lined baskets andor fluids with a viscosity other than water 1 obtain water pressure drop from graphs on appropiate product page. Strainers crane fluid systems our genius is valves. The pressure at that flow for the kit defined below will appear if the data is valid. Flow of liquids, gases and vapors typical fluid velocities. The power required to overcome friction is related to the.
This paper discusses a model of pressure drop calculation for strainers developed based on the screen opening, viscosity of the fluid, component factor, body factor, etc. From this point of intersection, follow the vertical line down to the bottom of the chart to determine the approximate pressure drop. Pressure drop chart temporary cone and basket strainers. Determine a the head loss and b the pressure drop if the pipe slopes down at 10 in the. Calculation of properties of water and steam according industry standard iapwsif 97 all conditions within the range 0 to 900 c and 0 to bar are calculable. Pressure reduction to d as caused by static height h. The table below lists the flow rate cv, in gallons per minute of water that will result in 1.
For example, a 1 model 72 simplex strainer with a perforated basket has a cv factor of 22. Crane fluid systems offers a full range of general valves, wras approved public health valves for hot and cold water systems and pipe fittings and unions, many of which carry the bsi kitemark. All software provided asis with no warranty, expressed or implied, available. As most strainer screens have very large straining and free areas, the pressure drop across the strainer is very low when used on steam or gas systems see example 12. Consult our engineering department for pressure drop information on steam, gases or viscous fluids. Pressure drop chart pipeline ystrainers, check valves. First multiply the pressure drop for water shown in charts by the specific gravity of. The screen openings chart indicates the % open area of 100 mesh is 30%.
Service with services that require extremely sturdy screens,such as high pressure temperature applications or services with. Pressure drop calculation selection of the filtration mesh. Prediction of pressure drop in chilled water piping system using theoretical and cfd analysis article pdf available in international journal of engineering and technology 54. Technical information for standard cast pipeline strainers performing pressure drop calculations are essential for deciding which pipeline strainer is best for your liquid filtration application. Temporary strainer pressure drop correction factors mesh lined baskets andor fluids with a viscosity other than water 1. See theoretical pressure drop curves for screen clogging in the technical data section for multiplying factors for clogged screens. A y strainer is an inline filter for hydronic systems. Flanged basket strainers sure flow equipment inc, 1800. Calculation of properties of water and steam according industry standard iapwsif 97 all conditions within the range 0. Take the pressure loss figure obtained in 1 and recalculate it using the appropriate correction factor from the following tables. Smspressuredropclog theoretical pressure drop curve for. The pressure loss across a strainer or filter can be calculated using the systems flow rate and the cv factor for that strainer or filter. Cooling tower pumping and piping baltimore aircoil company.
Consult our engineering department for pressure drop. An exclusive proprietary software can calculate the pressure drop for any design condition and strainer configuration. Find your desired rate of flow gpm on the left hand side of the chart. Engineering specification for the selection, installation. Calculations are possible only, if javascript is activated in your browser. Additionally, table 4 presents a general guide for selecting straining element sizes for water, steam, oil, gasoline and air. Softwarefactory norbert schmitz am moenchhof 7a 67105 schifferstadt germany tel.
The purpose of the guideline is to lay down the procedure for estimation of pressure drop across filtersstrainers in a piping system. Eaton assumes no liability arising out of the use by others of such products. Temporary strainer pressure drop liquids sizes 3 4 5 temporary strainer pressure drop liquids sizes 6 48 tel. Filtration calculators, calculate pressure loss and water.
Determination of pressure drop determination of component pressure drops hays fluid controls provides information to allow the user to determine the pressure versus volumetric flow characteristics of our devices in two formats. Full traceability of all parts of all strainers ever produced. Please contact our office with your exact specifications and you will be provided with factory calculations. Pressure drop chart flanged y pattern strainers styles a, ba, ba7, sa, sa7, ssa and ssa7 this pressure drop chart is based on the flow of clean water through the keckley y strainers listed above with screen perforations ranging from 364 through 18. First calculate pressure loss using cv factor formula at right. See page 30 for pressure drop data model 85 heavyduty y strainer a b c npt d clearance to remove screen typical socket weld end y strainer a b c npt d clearance to remove screen typical flanged y strainer a b d clearance to remove screen c npt dimensional drawings typical threaded y strainer eaton filtration standard cast pipeline. Spreadsheet calculates values in yellow boxes calculation of fluid flow rate, q, for given frictional head loss, hl, pipe. For mesh lined screens, multiply the pressure drop.
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