PIPELINE STRAINERS
FILTRATION A HISTORY OF INNOVATION HAYWARD began manufacturing speciality metal valves and industrial flow control products in 1923. Since then, HAYWARD has evolved through strategic acquisitions and technological advances to become the world s leader in Solids and Liquid separation. The HAYWARD Filtration business comprises 3 complimentary technologies; Gas-Liquid Separators, Pipeline Strainers and Bag and Cartridge liquid filtration systems. With 7 global manufacturing facilities, 26 wholly owned subsidiaries and an independent distributor network, HAYWARD Filtration actively serves customers in over 45 countries. Building on more than 75 years of Pipeline Strainer expertise, in 1996 HAYWARD diversified into Bag and Cartridge liquid filtration by acquiring American Felt and Filter's Filtration division. In 1998, HAYWARD established itself as a key supplier outside the USA by acquiring Germany s LOEFFLER Filter-Technik. In 1999, the acquisition of GAF Filter Systems established HAYWARD as the world's premier supplier of liquid bag filtration products. This brochure details what is regarded as one of the most comprehensive ranges of industrial Pipeline Strainers available on the market. Over recent years HAYWARD has introduced new concepts in strainer design such as the Model 53BTX Ball Type Duplex strainer (See page 3). With its patented diverter cartridge that provides leak tight isolation, the 53BTX significantly increases safety. TABLE OF CONTENTS DUPLEX 3 Model 53BTX Ball Type 4 Model 50 5 Model 50SJ Jacketed Model 570 Multi SIMPLEX 6 Model 72 7 Model 72SJ Jacketed Model 510 13 Model 72L Tefzel Lined SELF CLEANING 8 Model 596 & 2596 Backwashing Automatic Strainer 9 Backwashing Operation FABRICATED 10 Model 90 Model 91 "T" Type 11 Model 900 & 950 PLASTIC 12 All Plastic Simplex & Duplex s Y TYPE 13 Model 80 & 85 "Y" Type Strainer TEMPORARY STRAINERS 14 Model 92 Temporary Strainer BASKETS & ELEMENTS 14 Basket & Element Types TECHNICAL 15 Strainer Selection 2
Model 53BTX Ball Type DN 20 to DN 100 (¾" to 4") Iron, Bronze, or DUPLEX A dual basket strainer design that allows continuous flow of the fluid during cleaning. No shut down is required to clean the dirty basket so the process is not interrupted. The change over from one basket to another is made by turning the single lever. Threaded connections are provided on the side and bottom of both basket chambers so that the process liquid can be completely drained if necessary. Large capacity baskets increase operating time and reduce the frequency of cleaning. Double stem O-rings provide positive sealing even under the most arduous service conditions. The unique reinforced seats require no adjustment and are designed to provide the longest possible life. Piston seal chamber covers with quick open fixings allow the baskets to be removed quickly and easily for cleaning without any special tools. The 53BTX will operate effectively without any lubrication of the diverter mechanism, unlike other designs which require regular injections of grease. A low profile design combined with full size baskets allows easy installation without compromising the low pressure drop. Patented diverter cartridge Dynamic ball sealing system Simplifies removal and replacement of the seals and internal components Leak tight isolation of the off-line basket chamber during cleaning. No adjustment required Size Body and cartridge Connections Seats / Seals Diverter balls Rating DN 20 to 65 Iron Threaded PN 16 13.8 bar @ 66 C DN 50 to 100 Flanged ANSI 125 200 PSIG @ 150 F PTFE / Buna N* ** DN 20 to 65 Bronze Threaded*** PN 16 13.8 bar @ 66 C DN 50 to 100 Flanged ANSI 150 200 PSIG @ 150 F * Viton Standard for models, optional for Iron, Bronze and ** Nickel plated Stainless balls optional *** DN 65 threaded is not available in or 3
DUPLEX Model 50 DN 125 to 200 (5" to 8") Iron, Bronze, or Stainless Dual basket design Tapered & lifting diverter plug No plug lubrication required Quick open yokes and covers Large capacity baskets Uninterrupted flow during changeover Will not seize - Assured operation No introduction of grease into system Fast access to basket chambers Lower operating pressure loss Longer run time between cleaning Size Body Material Plug Material End Connections Seals Rating DN 125 to 200 Iron or Bronze Iron or Bronze ANSI 125/DIN PN 10/16 Buna N DN 125 & 150 DN 150 to 200 Iron, Bronze or St/St ANSI 150/DIN PN 10/16 Buna N 13.8 bar @ 38 C DN 200 DN 150 to 200 ANSI 150/DIN PN 10/16 Viton 10.35 bar @ 38 C Model 50 DN 250 to 450 (10" to 18") Iron or Bronze Compact butterfly valve design Dual basket design Quick open hinged covers Linked reduction gearbox Convoluted baskets Straight through flow design Positive isolation between chambers Uninterrupted flow during changeover Fast access to basket chambers Single hand wheel operation Optimum filtration area Minimum clean pressure drop DN 250 to 300 DN 350 to 450 Iron ANSI 125/DIN PN 16 Bronze ANSI 150/DIN PN 16 Iron ANSI 125/DIN PN 16 Bronze ANSI 150/DIN PN 16 Buna N 13.8 bar @ 38 C 10.35 bar @ 38 C 4
Model 50SJ Jacketed DN 25 to 200 (1" to 8") or DUPLEX Large integral welded jacket Threaded jacket connections Tapered lifting plug valve No plug lubrication required All metal fixings Even and efficient heat distribution Simple and safe installation Will not seize - Assured operation No introduction of grease to system Strong and rugged Size Body Material Plug Material End Connections Seals Rating DN 25 to DN 150 13.8 bar @ 38 C DN 25 to 200 ANSI 150/DIN PN 10 Viton DN 200 10.0 bar @ 38 C Model 570 Multi DN 200 to 600 (8" to 24") Cast Iron, or Sliding gate valve design Uninterrupted flow during changeover 8 individual baskets Optimum filtration but easy to lift out Low profile compact body Easy access to baskets. Minimum space requirement for installation Low centre to base dimension Fits in ground level pipeline High capacity Large volumes of water can be passed through a single strainer DN 200 to 600 Iron ANSI 125/DIN PN 10 8.6 bar @ 38 C Compressed, DN 200 to 600 ANSI 150/DIN PN 16 non-asbestos, 10 bar @ 38 C synthetic fibre DN 200 to 400 ANSI 300/DIN PN 20 20.7 bar @ 38 C 5
SIMPLEX Model 72 DN 10 to 200 ( 3 / 8 " to 8") Iron, Bronze, or Quick open yoke and cover Large capacity basket All metal fittings Threaded drain Flanged models with integral mounting feet Fast access to basket chamber Longer service time, less cleaning Strong and rugged Basket chamber easily emptied Fully supported installation DN 10 to 80 Iron & Bronze Buna N Threaded BSP or NPT DN 25 to 80 Viton Iron ANSI 125/DIN PN 10/16 13.8 bar @ 38 C Bronze Buna N DN 25 to 200* ANSI 150/DIN PN 10/16 Viton * DN 125 in Cast Iron and Bronze only Model 72 DN 250 to 450 (10" to 18") Iron or Bronze Quick open hinged cover Convoluted basket Straight through flow design Large integral mounting feet Threaded drain Fast access to basket chamber Optimum filtration area Minimum clean pressure drop Fully supported installation Basket chamber easily emptied DN 250 to 300 DN 350 to 450 Iron ANSI 125/DIN PN 16 Bronze ANSI 150/DIN PN 16 Iron ANSI 125/DIN PN 16 Bronze ANSI 150/DIN PN 16 Buna N 13.8 bar @ 38 C 10.35 bar @ 38 C 6
Model 72SJ Large integral welded jacket Threaded jacket connections Quick open yoke and cover Large capacity basket Flanged models with integral mounting feet Jacketed DN 25 to 200 (1" to 8") or Even and efficient heat distribution Simple and safe installation Fast access to basket chamber Longer service time, less cleaning Fully supported installation SIMPLEX DN 25 to 200 ANSI 150/DIN PN 10/16 Viton 13.8 bar @ 38 C Model 510 DN 200 to 600 (8" to 24") Cast Iron, or Straight through flow design Minimum clean pressure drop 4 individual baskets Optimum filtration but easy to lift out Low profile compact body Easy access to baskets. Minimum space requirement for installation Low centre to base dimension Fits in ground level pipeline High capacity Large volumes of water can be passed through a single strainer Iron ANSI 125/DIN PN 10 8.6 bar @ 38 C ANSI 150/DIN PN 16 Compressed, 10 bar @ 38 C DN 200 to 600 non-asbestos, synthetic fibre ANSI 300/DIN PN 20 20.7 bar @ 38 C 7
SELF CLEANING Model 596 & 2596 Backwashing Automatic Strainer DN 50 to 1200 (2" to 48") Iron, Bronze, or HAYWARD self-cleaning strainers are designed for the continuous removal of entrained solids from fresh, brackish or salt water. They have performed successfully in industrial, power, process, waste water, paper and municipal applications for over 30 years. A comprehensive range of sizes, models and materials is available, to suit various duties and operating conditions. Ideal for systems where high flows means that manual cleaning is impractical and also where continuous flow is required. Fully automatic function, complete with a control system that ensures optimum cleaning is achieved at all times. A small proportion of the screening element is cleaned, whilst the remaining screen area continues to strain. There is no interruption of flow during the cleaning cycle. Often installed in remote, unmanned locations, or in hazardous environments where personnel are at risk. Commonly used on water service where the disposal of the backwash water is not a problem. Most frequently used to clean water and protect capital equipment such as membrane filters, heat exchangers, pumps and spray nozzles. Ensures the quality and efficiency of cooling water, filters secondary effluent for use as wash water and provides clean water for quenching and de-scaling in the primary metals industry. Fabricated units are available with an ASME Code Stamp. Other materials available on request. Cast A true backwashing design that returns strained water back through the element A concentrated high velocity backwash that sweeps the full width of the element in a single pass Ensures the most efficient removal of solids from inside the element Reduced cleaning times, fewer cleaning cycles and less waste water Model Size Body material End Connections Rating Cast Iron ANSI 125/DIN PN 16 596 DN 50 to 200 2596 DN 250 to 400 Ductile Iron ANSI 125/DIN PN 16 Fabricated Model Size Body material End Connections Rating 2596 DN 50 to 1200 ANSI 150/DIN PN 10/16 10 bar @ 38 C 8
SELF CLEANING Backwashing Operation Dirt laden fluid enters the bottom chamber of the strainer, where the velocity decreases allowing larger debris to "Drop out" preventing damage of the element. The fluid then flows through the element - inside to outside. Any dirt or particles present are prevented from passing through by the element, and clean fluid flows out of the strainer. At a set moment, a timer in the control panel switches on the motor that is fixed to the top of the strainer. This motor is connected to the central backwash arm that begins to rotate. At the same time, the control panel also sends a signal to an actuated ball valve on the backwash outlet causing this to open. As the strainer is operating in a pressurised system and the backwash discharge is now open to atmosphere, the difference in pressure causes a small amount of the strained fluid to pass back in reverse through the element. The returned fluid rinses off the debris from the inside of the element, directly in front of the backwash collector. The backwash water and debris is carried down through the hollow collector and is discharged to a drain. Backwashing continues until the timer reaches its pre-set duration. The control panel then closes the backwash valve and shuts down the motor simultaneously, returning the strainer to normal straining status. A differential pressure switch is fitted to the strainer as a security device, in case cleaning is required between timed cycles. This measures the pressure loss across the strainer, and overrides the timer in the control panel should the element start to clog or if there is a particular incidence of turbidity in the system. Upper Seal Ring DuraWedge Element Convoluted Element DuraWedge is a non-clogging straining element constructed from V-Shaped profile wire. Vertical collector bars form spaces to accumulate debris and dirt and prevent "Ploughing" of this material by the rotating backwash arm, whilst also allowing focused cleaning of the element segment by segment. The V-Shaped profile increases the velocity of the reverse flow during backwash for optimum cleaning, and also helps prevent stapling of fibres. The all welded design with reinforcing bands provides structural integrity and significantly increase the operational lifetime of the element. A rugged and economical Stainless Steel element, made from convoluted plate for optimum filtration area. Reinforcing bands provide added resistance to pressure and flexing, whilst the cartridge design aids removal for inspection. The convoluted sections provide collection spaces to prevent any "Ploughing" of dirt and debris by the rotating backwash arm. 9
FABRICATED Model 90 DN 100 to 600 (4" to 24") or ASME Code Stamp available Elliptical top basket Quick open cover option Improved flow pattern Available with flushing connection * Except for very fine filtration Proven level of design & quality Same level inlet and outlet* Hinged for safety and speed Significantly lower pressure drop Allows blow down of large particles Size Body Material End Connections Rating DN 50 to 600 ANSI 300/DIN PN 20 20 bar @ 38 C ANSI 300/DIN PN 20 20 bar @ 38 C Also available: Larger sizes Heating jackets Special materials Integral lifting davit RTJ and butt weld ends Higher pressure ratings Offset or rotated nozzles Horizontal inlet / vertical outlet Model 91 T Type DN 50 to 600 (2" to 24") or ASME Code Stamp available Straight through flow design Quick open cover option Convoluted basket Proven level of design & quality Minimum pressure drop Hinged for safety and speed Optimum filtration area Size Body Material End Connections Rating DN 100 to 600 ANSI 300/DIN PN 20 20 bar @ 38 C ANSI 300/DIN PN 20 20 bar @ 38 C Also available: Larger sizes Heating jackets Special materials Integral lifting davit RTJ and butt weld ends Higher pressure ratings 10
Model 900 FABRICATED DN 150 to 600 (6" to 24") or Positive seal shut off valves Leak tight isolation of each chamber ASME Code Stamp available Proven level of design & quality Elliptical top basket Same level inlet/outlet & improved flow Quick open cover option Hinged for safety and speed Available with flushing connection Allows blow down of large particles Size Body Material End Connections Rating DN 150 to 600 ANSI 300/DIN PN 20 20 bar @ 38 C ANSI 300/DIN PN 20 20 bar @ 38 C Also available: Larger sizes Heating jackets Special materials Integral lifting davit RTJ and butt weld ends Automated changeover Higher pressure ratings Model 950 DN 50 to 600 (2" to 24") or Positive seal shut off valves ASME Code Stamp available Quick open cover option Available with flushing connection Compact design Leak tight isolation of each chamber Proven level of design & quality Hinged for safety and speed Allows blow down of large particles Short face to face dimension, requiring less space for installation Size Body Material End Connections Rating DN 150 to 600 ANSI 300/DIN PN 20 20 bar @ 38 C ANSI 300/DIN PN 20 20 bar @ 38 C Also available: Larger sizes Heating jackets Special materials Integral lifting davit RTJ and butt weld ends Automated changeover Higher pressure ratings 11
PLASTIC All-Plastic Simplex DN 15 to 200 ( 1 / 2 " to 8") PVC, CPVC or Polypropylene Threaded and lugged cover Large capacity basket Corrosion resistant body Threaded drain Fast access to basket chamber Longer service time, less cleaning Compatible with aggressive liquids Basket chamber easily emptied DN 25 to 100 PVC or CPVC Threaded, socket or flanged DN 25 to 50 PPL Threaded or flanged Viton 10.35 bar @ 21 C DN 150 to 200 PVC Flanged All-Plastic Duplex DN 15 to 100 ( 1 / 2 " to 4") PVC or CPVC Dual basket design Threaded and lugged covers Large capacity basket Corrosion resistant body Threaded drains Uninterrupted flow during changeover Fast access to basket chambers Longer service time, less cleaning Compatible with aggressive liquids Basket chambers easily emptied Socket DN 15 to 100 PVC CPVC Threaded Flanged Socket Threaded Flanged Viton 10.35 bar @ 21 C 12
Model 72 L LINED SIMPLEX Tefzel Lined DN 25 to 150 (1" to 6") Tefzel lined Quick open yoke and cover Large capacity basket Flanged drain Integral mounting feet High resistance to aggressive media Fast access to basket chamber Longer service time, less cleaning Allows connection to lined piping Fully supported installation DN 25 to 150 Tefzel lined ANSI 150/DIN PN 10/16 Viton 13.8 bar @ 38 C Basket options: Monel HASTELLOY Tefzel coated Model 80 & 85 Y Type Strainer 1 / 4 " to 10" or Y TYPE Compact design Reduced weight Threaded drain plug Simple and quick to empty Also available: Larger sizes RTJ Flanges Monel screens Higher pressure ratings Blow down valve instead of standard drain connection Size Body Material End Connections Cover Rating Seals Model ¼" to 2" Threaded NPT or 102 bar @ 38 C Threaded 600lb Socket 99 bar @ 38 C ¼" to 10" ANSI 150 19.6 bar @ 38 C Compressed, ANSI 300 51 bar @ 38 C non-asbestos, 85 ANSI 150 19 bar @ 38 C synthetic fibre Bolted ANSI 300 49.7 bar @ 38 C ½" to 10" 102 bar @ 38 C ANSI 600 ½" to 6" 99 bar @ 38 C 80 13
TEMPORARY STRAINERS Model 92 Temporary Strainer DN 50 to 600 (2" to 24") or Monel General Comments A compact design that fits between existing pipeline flanges Used to protect during commissioning and start up of new systems Cost effective and lightweight Manufactured from perforated plate and with mesh liners Size DN 50 to 600 Body Material Also available: Monel Higher pressure ratings BASKETS & ELEMENTS Basket and Element Types The basket or element is the heart of a HAYWARD strainer. After a particular type of strainer housing has been selected, equal concern should be given to the basket or screen design and the perforation or mesh size, for this alone determines the ultimate functionality and performance of the strainer. Cylindrical Standard baskets with bow-shaped handles which are pushed down by the cover to ensure a tight seal in the strainer body. This is the standard type of perforated or mesh basket available in or Monel. Pleated (Convoluted) Pleated, open type baskets which have a very low pressure drop. The convoluted or pleated structure gives a much greater straining area then other designs. Elements (Screens) Used in self cleaning strainers instead of baskets to trap unwanted particles and debris. These items are designed so that debris is easily dislodged during backwashing, and can be made from perforated plate, sinter bonded mesh and wedge wire (DuraWedge ). Slanted (Elliptical) Top The slanted open top design allows fluid to enter easily and cuts down pressure drop. This also allows inline connections on fabricated bodies, and also the use of smaller baskets in multi-basket strainers so that these can be removed easily by one person, even on very large units. 14
TECHNICAL Strainer Selection Basket strainers should always be "Sized" to avoid exceeding the maximum permissible pressure drop of the chosen strainer and basket combination when clean. "Sizing" will determine the pressure loss for a given strainer and basket combination, and therefore ensure the satisfactory operation of the strainer and also the longest possible service life. Our sales team will be happy to discuss your requirements and select a suitable strainer for you. Opening Equivalents Standard Mesh Inches Millimeters Microns 400 0.0015 0.0381 38 300 0.0018 0.0457 45 250 0.0024 0.0609 60 200 0.0027 0.0686 68 150 0.0041 0.1041 104 100 0.0065 0.1651 165 80 0.007 0.1778 177 60 0.009 0.2286 228 40 0.015 0.3810 380 20 0.034 0.8636 862 Standard Perforated Inches Millimeters Microns 1 /32 0.033 0.838 838 3 /64 0.045 1.143 1143 1 /16 0.070 1.778 1776 3 /32 0.094 2.387 2387 1 /8 0.125 3.175 3175 5 /32 0.150 3.810 3810 3 /16 0.1875 4.762 4762 1 /4 0.250 6.350 6350 3 /8 0.375 9.525 9525 1 /2 0.500 12.700 12700 For comprehensive technical data on our entire range of Pipeline Strainers, as well as information covering all of our filtration and separation products, manufacturing facilities and sales offices around the world, we invite you to visit www.haywardindustrial.com 15
manufacturer of HAYWARD Industrial Products, Inc. Headquarters NORTH AMERICA HAYWARD Industrial Products, Inc. 900 Fairmount Avenue Elizabeth, NJ 07207, USA Tel. +1 908 351 5400 Fax +1 908 351 7893 E-mail industrial@haywardnet.com www.haywardindustrial.com Headquarters SOUTH AMERICA HAYWARD Industrial Products do Brasil Ltda. Rua Padre Roque, 2084, Bairro da Saude Mogí Mirim/SP CEP: 13800-335, Brazil Tel. +55 19 3805 8204 Fax +55 19 3805 8202 E-mail inquerito@haywardindl.com www.haywardindustrial.com Headquarters ASIA and PACIFIC HAYWARD Industrial Products Asia Pte. Ltd. 11 Chang Charn Road, #05-02 Shriro House Singapore 159640, Singapore Tel. +65 6452 0955 Fax +65 6452 1132 E-mail sales@haywardindl.com www.haywardindustrial.com Headquarters EUROPE, MIDDLE EAST and AFRICA HAYWARD Filtration GmbH Auf der Heide 2 D-53947 Nettersheim, Germany Tel. +49 2486 809 0 Fax +49 2486 809 800 E-mail info@haywardindl.com www.haywardindustrial.com To Contact Customer Service: Correspondence Addresses: Customer Service: Headquarters EUROPE, MIDDLE EAST and AFRICA (see above), excluding France and United Kingdom UK Customer Service: HAYWARD Filtration GmbH, Unit 2, Crown Gate, Wyncolls Road, Colchester, Essex CO4 9HZ, UK French Customer Service: HAYWARD Filtration GmbH, La Tour Sier, 129 boulevard Pinel, 69500 Bron, France Telephone and Fax Numbers: Germany Tel. +49 (0) 2486 809 400 Fax +49 (0) 2486 809 500 Export Tel. +49 (0) 2486 809 470 Fax +49 (0) 2486 809 570 France Tel. +33 (0) 4 72 78 84 50 Fax +33 (0) 4 78 74 43 07 South Africa Tel. +27 (0) 11 791 43 31 Fax +27 (0) 11 791 05 83 UK Tel. +44 (0) 1206 848 350 Fax +44 (0) 1206 848 359 Distributor Austria Tel. 0800 29 36 89 Fax 0800 29 36 90 Belgium Tel. 0800 77 0 22 Fax 0800 77 0 23 Luxembourg Tel. 800 2 42 98 Fax 800 2 42 99 Netherlands Tel. 0800 0 22 27 03 Fax 0800 0 22 26 95 Italy Tel. 800 78 58 83 Fax 800 78 58 84 Spain Tel. 900 98 49 15 Fax 900 98 49 14 GAF, the GAF logo, ACCUGAF, DURAGAF, PROGAF and GAF SNAP-RING are registered trademarks of GAF Corporation in the United States and are used under license. To the best of our knowledge, although not binding for us, all stated information is correct. Copyright 2004 HAYWARD Industrial Products, Inc. All rights reserved. 07/2004