Typical pressure drop through a y type strainer is given in fig. Pressure drop online calculator calculation of pressure drops of flowing liquids and gases in pipes and pipe elements laminar and turbulent flow. Find your desired rate of flow gpm on the left hand side of the chart. Determination of pressure drop 2 2 2 a k q pi po p. This version is usable for browsers without javascript also. For finer mesh screens that are backed with a perforated sheet, multiply the pressure drops shown at right by the following.
Where cost is of prime importance, a temporary strainer may be installed between flanges in a pipeline. This paper will cover the sump screen head loss testing methodology, and. Style b slanted type basket typically used for larger sized simplex and duplex basket strainers. External usb data acquisition cards are used to process data signals and labview data. Downloads teleflo strainers strainers and pressure.
The pressure drop across a valve is related to the flow rate passing through it, i. Multiply the pressure drop obtained from 1 by the specific gravity of the liquid. Click on the images to the right to download the adobe pdf sheets for titan fcis strainer and check valve models. The strainer is the surface of a circular cone fustum built into a spool of 24dia pipe id23. See page 16 for correction factors to be used with other fluids andor screen openings. How fittings, valves and strainers affect pressure drop and head. How to select a basket strainer hayward flow control. As a general rule of thumb, a pressure of greater than 2 psi through a clean strainer usually indicates the strainer selected is too small for the intended application. Ystrainer flow rate vs pressure drop sure flow equipment inc.
Engineering specification for the selection, installation. The losses due to the expansion and contraction through the inlet and outlet. Sb series simplex basket strainers hayward flow control. The cone shaped support plate is lined with wire mesh. Keckley strainer information 070612 ystrainer section. Smspressuredropclog theoretical pressure drop curve for. Probalance range offers a wide variety of flow management systems and static balancing valves, providing the ultimate in accuracy and reliability. Sample sure flow basket strainer calculation estimate pressure drop across 100 mesh lined sure flow y strainer provided in a 10.
The strainer is a flat plate, with as much 10mm holes as possible punched into it. Any larger size strainer will improve pressure drop. Dt highperformance media utilizes a blend of borosilicate. This paper discusses a model of pressure drop calculation for strainers developed based on the screen opening, viscosity of the fluid, component factor. Pressure drops for models 30, 50, 510, 570 and 72 strainers are all available and in isc sales inventory. Sample sure flow y strainer calculation estimate pressure drop across 100 mesh lined sure flow y strainer provided in a 6. Pressure drop is defined as the difference in total pressure between two points of a fluid carrying network. Examples of the calculations of the fluid resistance of systems 2.
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. Well documented pressure loss calculator for use with basket and tee style strainers. Pressure drop calculations 2 2 voigtabernathy store. In that case, the pressure drop will only be calculated based on the quantity mentioned in first column. Strainer cover presses down on handle to ensure straining element remains. As described above the multiplying factor for a 50% clogged basket is 2. Pressure drop curves are based on water flow with standard screens. Standard cast pipeline strainers national strainer corp. Catalog section 641 model 53btx, 50 eaton duplex basket. All software provided asis with no warranty, expressed or implied, available. Technical paper experimental eccs sump strainer head loss. Ystrainer flow rate vs pressure drop y strainers take their name from their configuration. Guidelines for the preparation of strainer specification part 2. Guide for the selection, installation and maintenance of.
They are intended for applications where small amounts of solid particulate are expected, and where cleanout will be infrequent. Prediction of pressure drop in chilled water piping system. Unlined 20 mesh 40 mesh 60 mesh 80 mesh 100 mesh 120 mesh. Determination of pressure drop and filtration efficiency of. They are most commonly used in pressurized lines, gas or liquid, but can also be used in suction or vacuum conditions. Style a cylindrical screen generally used for y type strainers. To calculate pressure drop through cartridges, see page 192. A pressure drop occurs when frictional forces, caused by the resistance to flow, act on a fluid as it flows through the tube. Please view the pdf provided below for specific information for pressure loss calculation, correction factors and the appropriate pressure drop curves. For style 1 basket strainers multiply value obtained in figure 2 by 1. To access the working calculator, please sign up for free membership trial. It states that pressure drop is proportional to the square of the velocity and the length of the pipe. For additional help determining the pressure drop for a titan flow control product, please contact us. The values of c i given in this handbook include the local pressure losses in the immediate.
Pressure drop across coarse strainers posted in industrial professionals. Figure 1 figure 2 threaded basket strainer pressure drop liquids sizes 1 2 1. Pressure drop online calculator for mobile and pdaelement of pipe. Flow rate 700 gpm viscosity 100 cp specific gravity 0. In this low flow area, the dynamic pressure drops between all four ports is almost zero. The table below lists the flow rate cv, in gallons per minute of water that will result in 1. First calculate pressure loss using cv factor formula at right. Technical information for standard cast pipeline strainers. Fabricated wye strainers pressure drop 332 thru 14 screen perforations 4 5 6 8 10 12 14 16 18 20 24 0 flow rate gpm size 1 12 2 2 12 3 4 5 6 8 10. 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. Different basket shapes are available to meet pressure drop requirements. From this point of intersection, follow the vertical line down to the bottom of the chart to determine the approximate pressure drop. For pump head calculations, add the cartridge pressure drop to the calculated drops for other components. Y strainer flow rate vs pressure drop y strainers take their name from their configuration.
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. The screen openings chart indicates the % open area of 100 mesh is 30%. The pressure loss across a strainer can be calculated using the systems flow rate and the cv factor for that strainer. 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.
How do i determine head loss in a hydraulic separator. Calculations are possible only, if javascript is activated in your browser. Esdu 08002 fouling in cooling systems using fresh water. Pressure drop chart fabricated tee strainer sure flow. A pressure gauge installed before and after the strainer in line will indicate pressure loss due to clogging and may be used to determine when cleaning is required. See theoretical pressure drop curves for screen clogging in the technical data section for. Manual valves are used to isolate pipe runs depending on the configuration. 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. For a full page, printable version of this information, please click on the pdf icon. Pressure drops listed in the following are based on the gpm and pipe sizing of 4.
Request pdf handling the pressure drop in strainers a strainer is a device. For example, a 1 model 72 simplex strainer with a perforated basket has a cv factor of 22. This equation is valid for all fluids in both laminar and turbulent flow. Low pressure drop streamlined design large strainer screen compact end to end dimension cast or fabricated construction sizes cast 14 8mm to 24 600mm.
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. Pressure drop across a strainer mesh number the mesh is effectively the number of opening per 25. First multiply the pressure drop for water shown in charts by the specific gravity of the liquid. Modeling a strainer engineered software knowledge base. Determination of pressure drop hays fluid controls. Automatic self cleaning filter pressure drop calculations.
The valve flow coefficient cv is used as an indicator of the pressure drop across a. Yarway wyetype pipeline strainers 900 series pressure drop through yarway wye strainers in the application of wye strainers, the most. 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. In water service with a 30 gpm flow rate, it will have a 1. This is a sample of the strainer pressure drop calculator. Cpvc solvent cement joining process is simple and straightforward.
This methodology utilizing the generated 3d model for pressure drop calculation, which is depicted in fig. 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 basket strainer. The pressure drop curves are based on the flow of water through clean, perforated. Performing pressure drop calculations are essential for deciding which pipeline strainer is best for your liquid filtration application. Pressure drop calculations for pipeline strainers isc sales. To approximate pressure drop for strainers with other than 40 mesh baskets, multiply chart reading by the appropriate factor. Automatic balancing valves flow regulator, strainer, two. Modeling a strainer in pipeflo when a strainer is installed, the strainers components create obstructions in the flow path.
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. 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. Manufacturers publish a flow coefficient value to allow the calculation of pressure drop. Flow rate 1,300 gpm viscosity 100 cp specific gravity 0. Engineering data screen openings for basket strainers. To calculate pressure drop through vessels using other than 116. See page 102 for the applicable pressure drop calculation. With the corrected pressure drop from step 3 and the flow rate in gpm, determine the maximum size of the strainer. Reading off the manufacturers performance curve figure 2, for 206 gpm through a 3 strainer, the pressure drop is approximately 3. Pressure drop chart temporary cone and basket strainers. The total pressure drop in t his case also is given by the expression 3. 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. The pipe line strainer section of the fluid controls institute inc acknowledges and appreciates the assistance. Calculate pressure drop in filters and strainers separation.
However, in pumped water or viscous fluid systems, the pressure drop can be significant. The amount of filter surface area and the loading of particulate being filtered. 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. 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. Pressure drop chart y strainers flanged end above based on the flow of clean water through. 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.
This application can be used to estimate the pressure drop across a strainer with a standard mesh for given strainer size and liquid flow. I would like to estimate in advance the pressure drop of the proposed design designed by others. Slanted inlet side reduces pressure drop across the strainer. Well documented pressure loss calculator for use with. Obtain water pressure drop from graphs on appropiate product page.
Optimization of large size fabricated ystrainers for. While pipeflo does not have a device specifically for strainers, their associated pressure drop and flow rate profile can be modeled using various. The pressure drop chart for basket strainers indicates a drop of 0. From figure 3, it can be seen that for a flow rate of 206. Handling the pressure drop in strainers request pdf researchgate. Technical documents about pipe flow and pressure drops. Smspressuredropclog theoretical pressure drop curve for screen clogging. Determine a the head loss and b the pressure drop if the pipe slopes down at 10 in the.
Determine the size of strainer using the pressure drop curves. Multiply the pressure drop from 2 by the appropiate correction. Combining more than 40 years of experience with innovative. Direction of pump strainer you can change the direction of y type strainer,but the pressure drop accross the strainer will higher in the reverse direction.
Once the pressure drop reaches an unacceptable value, the strainer should be clean andor removed. Strainers should have flow capacities quoted in terms of a capacity index or kvs value. Handling the pressure drop in strainers request pdf. These obstructions have a pressure drop associated with them. An exclusive proprietary software can calculate the pressure drop for any design condition and strainer configuration. In some cases, the strainer size may not always be the same size as the pipe diameter. Full traceability of all parts of all strainers ever produced.
Pressure drop onlinecalculator calculation of pressure drops of flowing liquids and gases in pipes and pipe elements laminar and turbulent flow. Once a point is reached where the pressure to overcome this is too great, the desired flow through the filter will be compromised. Str9951 pressure drop data basket colton industries. The disadvantage is that the darcyweisbach friction factor is a variable. Options available options available av manual air vent dx ext. Consult our engineering department for pressure drop information on steam, gases or viscous fluids. As the filter bag or strainer begins to fill, the pressure drop increases as the filtered debris reduces the filters surface area.
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