Basket Type Strainer (Pot Type Strainer)

Bolted Cover Design, Basket Strainer ManufacturerEasy Removable filtering element Basket Strainer ManufacturersScreen Available from 2 mesh to 800 mesh (up to 5 microns)Fabricated Basket Strainer as per ASME VIII ManufacturerHigher Flow Area Basket Strainer on request ManufacturersSpecial on demand : Rubber Lined Basket Type Strainer, PTFE Lined Basket Type Strainer, Jacketed Basket Type Strainer, Tailor Made Basket Type Strainer Manufacturer & Exporters.

Basket Type StrainerFlanged End

Rating - PN 10/16/25

FABRICATED BODY

Pot Type StrainerFlanged End

Rating - 150#

CASTED BODY

What is Basket Strainer?An official definition adopted by the Fluid Controls Institute is : “A closed vessel with cleanable screen element designed to remove and retain foreign particles down to 0.001 inch diameter from various flowing fluids.” Note the term “foreign particles”. Strainers do not necessarily remove only dirt. They take out material which is not wanted in the fluid and this can sometime be a valuable product which may be saved.

Basket Strainer designed for remove foreign matter from pipe lines and provides protection for pumps, meters, valves, and other similar mechanical equipment, which is called as Strainer. Basket Strainers feature top removal of the screen. The screen is in the form of a basket, with a lifting handle, so that all particulate captured and retained by the screen can be easily removed for disposal. The particulate matter is captured in the strainer basket. The line is then temporarily shut down and the basket removed for cleaning or replacement. Baskets are fabricated from stainless perforated sheet. The Basket Strainer is also called as Pot Strainer. The strainer improves the clearance in the medium, and prolongs the life of valves; protect expensive pumps, meters and other equipments. It is suitable for water, Air, Gas, petroleum, steam and other fluids.

Dharmi Engineers manufacturer & exporter of wide range of Industrial Strainer such as Basket Type Strainer, “Y” Type Strainer, Pot Type Strainer, “T” Type Strainer, Magnetic Type Y Strainer, Conical Strainer, Simplex Strainer, Inline Strainer, Basket Strainer, Duplex Basket Strainer etc.

____________________________________________________________________________________________________________

The Difference between Strainer & FilterActually there isn’t any since a strainer is, in reality, a coarse filter. The question is then one of semantics. Generally it is assumed that if the particle to be removed is not visible to the naked eye, the unit is filtering, and if the particle is visible, the unit is straining. The average human eye can detect a specific particle between 50 and 70 micros. Most people cannot see anything smaller than 325 mesh, or 44 microns. Since 200 mesh is equivalent to 74 microns, a general rule would be that if the screening device is coarser than

200 mesh, it is a strainer and if it is finer than 200 mesh it is a filter.

One of the best uses for a strainer is in conjunction with a filter. By installing a strainer directly ahead of a filter, the large heavy pieces which would quickly clog the filter are removed. The filter is then free to do its major job of fine particle removal and does not have to be cleaned so often

____________________________________________________________________________________________________________

What is Strainer Open Area Ratio & ImportantAmount of free open area is the ratio of the open area through the strainer basket to the cross sectional area of the pipe. A common term used in strainer design is “Open Area Ratio” (OAR) equals the total open basket area divided by the internal cross-sectional area of the inlet pipe. It is a measure of relative debris-holding capacity and is usually between 1 to 4 times the inlet pipe area.

The open area ratio in strainer element refers to the amount of free open of the strainer and basket element. It is the ratio of the open area through the strainer basket to the cross sectional area of the pipeline. Anything less may cause excessive pressure drop. The ratio is calculated with a clean basket and as the basket begins to clog the ratio will drop. Unless there is a wide safety margin the area through the basket may quickly become smaller than the pipe area. This will reduce flow through the strainer and necessitate very frequent cleaning. A small open area ratio also means the holding capacity of the basket is small - an important consideration if the amount of solid matter to be removed is large.

Open Area Ratio = Total Basket Element Open Area / Inlet Pipe Cross Sectional Area (in. squared)

To determine the anticipated maximum differential pressure (DP), it is common to request the DP at 75% blockage. At 75% blockage, there is a 75% reduction in flow area compared to clean, and a DP equal to approximately 4X that of the clean DP Value. This is based on a proportional analysis with open basket area being inversely proportional to DP.

____________________________________________________________________________________________________________

How to select right Strainer Element?The strainer element (it can be for y type strainer for basket type strainer) is the heart of a strainer since this is where the unwanted material is trapped. Strainer baskets elements are made of perforated sheet metal and a wide range of opening sizes is available. The size of the basket perforation should be slightly smaller than the minimum particle size to be removed. Using a smaller perforation opening than necessary only means the basket will fill and clog more quickly and have to be cleaned more often. By the using of fine element mesh sheet along with perforated sheet can achieve fine filtration up to 5 Micron.

__________________________________________________________________________________________

__________________

When to Clean Basket Strainer Element?Strainer basket element should be cleaned on a regular basis, not when they become clogged, to insure that they are not damaged by too high a differential pressure. One more reason for frequent cleaning is a phenomenon known as “runaway buildup”. As dirt in a strainer basket accumulates and as the mesh or perforations plug up, pressure drop increases. The curve of this pressure difference is not a straight line. It starts out as a low slope, but as the basket clogs more and more it turns upward faster and faster. As the dirt builds up the free open area in the basket gets smaller and smaller.

____________________________________________________________________________________________________________

 Dharmi Basket [POT] strainers remove damage causing particulate matter from the process media, protecting system components such as flow meters, pumps, mechanical seals and spray nozzles.

Basket Strainers feature top removal of the screen. The screen is in the form of a basket, with a lifting handle, so that all particulate captured and retained by the screen can be easily removed for disposal. The particulate matter is captured in the strainer basket. The line is then temporarily shut down and the basket removed for cleaning or replacement.

Advanced dynamic flow path and large filtration area elements ensure low pressure drops and reduced maintenance periods.

These strainers reduce downtime for cleaning due to their construction of bolted cover and easy removal of screen. They are ideal for very fine straining.

 

Simplex Type Fabricated Basket Strainer, Size Range 25NB to 400NB 

Duplex Basket Strainer with 3 Way Ball Valve/Butterfly Valve, Size Range 25NB to 400NB

Simplex Basket Strainer Dimensions

Simplex Basket Strainer Dimensions - Basket Type Strainer Dimensions (Class 150 / PN6 / PN10 / PN16 / PN 25)Flange Drilling & Dimensions - As Per ANSI B 16.5, Class 150 (Other Standrad Drilling Available on Request)

Size (INCH) 1-1/2" 2" 2-1/2" 3" 4" 5" 6" 8" 10" 12"Size (DN) 40 50 65 80 100 125 150 200 250 300F to F - A 300 310 350 410 460 470 520 610 720 800

C to Bottom - B 220 240 300 350 380 460 550 710 860 870

Cen. to Top - C 100 100 120 130 160 170 190 230 260 310

Height - H 330 360 450 510 570 660 780 1230 1390 1480

Flange O.D. - ØD

127 152.4 177.8 190.5 228.6 254 279 343 406 483

Flange PCD - ØE 98.4 120.6 139.7 152.4 190.5 215.9 241.3 298.4 362 431.8

R.F. Dia. - ØF 73 92.1 104.7 127 157.2 185.6 215.9 269.9 323.8 381

No. of Hole 04 04 04 04 08 08 08 08 12 12

Hole Dia. 15.8 15.8 19 19 19 19 22.2 22.2 25.4 25.4

*** Above Dimensions are subject to our Standard Manufacturing Range. Dimension may change subject to Flow Capacity, Pressure Rating and Open Area Ratio.

*** Contact Factory for more Size & Pressure Rating Basket Strainer Dimensions.

 

MESH TO MICRON CONVERSION CHARTU.S. MESH INCHES MICRONS MILIMETERS

3 0.2650 6730 6.7304 0.1870 4760 4.7605 0.1570 4000 4.0006 0.1320 3360 3.3607 0.1110 2830 2.8308 0.0937 2380 2.380

10 0.0787 2000 2.00012 0.0661 1680 1.68014 0.0555 1410 1.41016 0.0469 1190 1.19018 0.0394 1000 1.00020 0.0331 841 0.84125 0.0280 707 0.70730 0.0232 595 0.59535 0.0197 500 0.50040 0.0165 400 0.40045 0.0138 354 0.35450 0.0117 297 0.29760 0.0098 250 0.250

70 0.0083 210 0.21080 0.0070 177 0.177

100 0.0059 149 0.149120 0.0049 125 0.125140 0.0041 105 0.105170 0.0035 88 0.088200 0.0029 74 0.074230 0.0024 63 0.063270 0.0021 53 0.053325 0.0017 44 0.044400 0.0015 37 0.037

Strainer Mesh Sizes and Microns Strainer - What does mesh size mean?  Figuring out mesh sizes is simple.  All you do is count the number of openings in one inch of screen (in the United States , anyway.)  The number of openings is the mesh size.  So a 4-mesh screen means there are four little squares across one linear inch of screen.  A 100-mesh screen has 100 openings, and so on.  As the number describing the mesh size increases, the size of the particles decreases.   Higher numbers equal finer material.  Mesh size is not a precise measurement of particle size.

Strainer - What do the minus (-) and plus (+) plus signs mean when describing mesh sizes?  Here’s a simple example of how they work.  –200-mesh would mean that all particles smaller than 200-mesh would pass through. +200 mesh means that all the particles 200-mesh or larger are retained.

Strainer - How fine do screens get?  That depends on the wire thickness.  If you think about it, the finer the weave, the closer the wires get together, eventually leaving no space between them at all. For this reason, beyond 325-mesh particle size is usually described in “microns.”

Strainer - What is a micron?  A micron is another measurement of particle size.  A micron is one-millionth of a meter or one twenty-five thousandth of an inch.  

 

Basket Strainer Basket Construction :

Baskets are fabricated from stainless perforated sheet. The relevant degree of filtration is provided by welding the appropriate grade of Stainless Steel mesh to the basket

Basket Strainer Features & Option :

Bolted body with cover 

Easy Removable filtering element

Low pressure drop across the filter

Low cost – Initial as well as service cost

Adequate strength of element and housing

Protect expensive Pumps. Meters Heat Exchangers, Valve, Spray Nozzle, Regulators etc.

Remove foreign particles, lumps, debris

Top removal of screen with a lifting handle arrangement

Baskets made from heavy gauge perforated stainless steel lined with wire mesh

Large basket size holds sufficient solids for the required time between clean-outs

Interchangeability of component with another of same type.

Wire mesh up to 5 Micron

All types of strainer supplier

Tailor made screen on request

Basket Strainer Design & Testing International Standard :

Design Std. : ASME 16.34 / ASME SECTION VIII

Pressure Testing : API 598

Face To Face : Mfg. Standard

Flange Drilling : ANSI B 16.5 / BS 10 Table / DIN / IS 6392

Pressure Rating : 125#, 150#

Size Range :40mm (1½”) To 300mm (12”)

Basket Strainer Material of Construction :

Body & Cover

Mesh (Element)

Cast Iron to ASTM A 126 Class BIS 210 GR. FG 200 / 220 / 260

Cast Carbon Steel to ASTM A 216 GR. WCB

Stainless Steel to ASTM A 351 GR. CF 8 / 8M / 3 / 3M

Carbon Steel to IS 2062 (Fabricated Type)

S.S. 304 / 316 / 304L / 316L (Fabricated Type)

Others on request

S.S. 304

S.S. 316

S.S. 304L

S.S. 316L

Brass

Basket Strainer Applications :

Petrochemical Industries & Refinery Project

Chemical Industries

Power Plants

Cement Plant

Pharmaceutical Industries

Air Conditioning

Sugar Industries

Pulp & Paper Mill

Fertilizer Plants

Allied Industries

Please specify below details at the time of enquiries/orders:

Types of Strainer

Pressure Rating Class

Strainer Size

Type of End Connection

Drilling Standard, If Flanged End

Material of Construction

Mesh Size & Material

Flow Medium (Service)

Design Pressure

Operating (Working) Pressure

Design Temperature

Operating (Working) Temperature

Any special request

Wide Range of Industrial Basket Strainer & Basket Filter

Cast Iron Basket Strainer Exporter

Cast Carbon Steel Basket Strainer Manufacturer

Cast Stainless Steel Basket Strainer Stockiest

Fabricated Strainer Supplier

Y Type Strainer Manufacturers

Basket Type Strainer Exporter

Pot Type Strainer Manufacturer

T Type Strainer

Simplex Type Strainer Exporter

Duplex Type Strainer Manufacturer

Conical Type Strainer Stockiest

Temporarily Inline Strainer Supplier

Rubber lined Strainer Supplier

P.T.F.E. lined Strainer Exporter

Tailor Made Strainer Manufacturer

Recent Executed Basket Type Strainer Purchase OrderDate: 20/03/2013 - Execute a repeat Purchase Order of Simplex Basket Filter supply for Pump Suction Line in a Water Treatment Plant. Basket Strainer Specification - Body & Cover - IS 2062 Fabricated, Nozzle - IS 3589, Basket - S.S. 304 (Mesh 100 Micron). Flow Capacity - 8 M3/Hr., Working Pressure - 2.5 Bar, Design Pressure - 10 bar. Size of Basket Strainer - 2". 

Date: 14/03/2013 - Supply a High Pressure Class 300 Rating Duplex Type Basket Strainer with 3 Way Ball Valve common Lever operating system for Argon Gas Application to Essar Steel Limited, Size of Duplex Filter - 40NB (1-1/2"), Flange Drilling - As per ANSI B 16.5, Class 300, Strainer Element - Plated Wooven Type with 5 Micron Mesh. Valve Operationg Single Center Commom Hand Lever Operated.

Date: 22/12/2012 - Fully Jacketed Basket Type Fabricated Strainer/Filter supply for Sticky/Viscous Applicaiton. Basket Strainer

Specification - Body - S.S. 316L, Nozzle - S.S. 316L, Basket - S.S. S.S. 316L, Working Pressure - 9 Bar, Design Pressure - 15 bar. Basket Strainer Size - 2" (DN50).

Date: 22/10/2012 - Fully Jacketed Basket Type Fabricated Strainer/Filter supply for Sticky/Viscous Applicaiton. Basket Strainer Specification - Body - S.S. 316L, Nozzle - S.S. 316L, Basket - S.S. S.S. 316L, Working Pressure - 9 Bar, Design Pressure - 15 bar. Basket Strainer Size - 2" (DN50).

Date: 02/09/2012 - Basket Type Fabricated Strainer/Filter supply for LPG Applicaiton. Basket Strainer Specification - Body - A 106 GR. B, Nozzle - A 106 GR. B, Basket - S.S. 304 (150 Micron), Working Pressure - 17 Bar, Design Pressure - 25 bar. Basket Strainer Size - 4" (DN100). We supply this Basket Filter to Indian Oil Corporation Ltd. 

Date: 06/07/2012 - Simplex Type Basket Strainer supply for Raw Water Plant. Basket Strainer Specification - Body & Cover - IS 2062 Fabricated, Nozzle - IS 3589, Basket - S.S. 304 (150 Mesh - 0.1 Square Meter Area). Flow Capacity - 1000 Cu. Mtr/Hr., Working Pressure - 6 Bar, Design Pressure - 10 bar. We supply this Basket Filter to India's leading EPC Contractor of Power Plant.