SpDesGuide6 03 04 - Leslie Controls

1 Y Strainers Basket Strainers T-Strainers Automatic Backwash Strainers Duplex Strainers Suction Diffusers Butterfly Valves Check Valves custom fabricated products wide selection 70 Rev. 1 ISO 9001 CERTIFIEDThe quality standards maintained by Leslie Controlsare among the most rigorous in the industry. All Leslievalves are 100% tested utilizing calibrated equipmentwhich conforms to the requirements of most qualityspecifications. Our Quality Assurance System has beencertified to ISO 9001*.Every product we sell is supported by extensive tech-nical data that provides all of the engineering and appli-cations information required for making a proper selec-tion. These detailed data sheets are provided uponrequest without cost or addition to the published material, our factorytrained representatives are always willing to discuss yourapplication. If the situation warrants, we will visit yoursite and survey your , as always, throughout our century year oldbusiness history, we are committed to unconditional cus-tomer satisfaction.

2 Our products carry clear warrantystatements and we will never knowingly attempt to applya product that is wrong for your application. If any dissat-isfaction develops in the course of your dealings withLeslie Controls , we will make things Support and Documentation* Assessed and certified by ABS Quality Evaluations, Inc., Houston, Texas- 1 -T A B L E O F C O N T E N T SY Strainer Strainer Design Features ..4125Y Series Y Strainers125Y1 Bronze ..7125Y2 Cast Series Y Strainers 150Y2 Carbon Steel, Stainless Steel ..13150Y2 Bronze ..14250Y Series Y Strainers 250Y1 Cast Bronze ..20250Y2 Ductile Iron ..21300Y Series Carbon Steel, Stainless Steel Y Strainers 300Y1 NPT, Socketweld ..25300Y2 Flanged, Buttweld ..26600Y Series Y Strainers600Y1 Carbon Steel, Stainless Steel, Low Carbon Steel, Alloy 20 NPT, Socketweld ..31600Y2 Carbon Steel, Stainless Steel,Flanged, Ring joint, Buttweld.

3 32900Y Series Y Strainers900Y2 Carbon Steel, Stainless Steel ..37 1500Y Series Y Strainers 1500Y1 Carbon Steel, Stainless Steel ..411500Y2 Series Carbon Steel, Stainless Steel,Chrome Moly ..42FY Series Fabricated Y Strainers ..46Y Strainer Technical Strainers Features ..61125B Series Basket StrainersCast Iron Flanged ..62 150B1 Series Flanged Basket StrainersCast Bronze, Carbon Steel, Stainless Steel ..66150B2 Series Flanged Basket StrainersCast Carbon Steel, Stainless Steel ..70300B Series Basket Strainers Cast Carbon Steel, Stainless Steel, Threaded ..74FB Series Fabricated Basket Strainers FB1 ..79FB2 ..80FB3 ..81FB4 ..81FB5 ..83 Basket Strainers Technical Information ..87 T-Strainers Features ..97FT Series Fabricated T-Strainers FT1 ..99FT2 ..100FT3 ..101T-Strainers Technical Information ..105 Temporary Strainers , TB & TP Series Basket StrainersTC.

4 113TB ..114TP ..115 Temporary Strainers Technical Information ..119 Suction Diffusers Series Cast Iron Suction Diffusers ..128FF Series Fabricated Suction Diffusers ..132125T Series Cast Iron Triple Duty Valves ..136 Pump Protection Technical Information ..139 Double Door Check Valve Features ..132 Double Door Check Valve Design Features ..144125WT Series Double Door Check Valves ..146150WT Series Double Door Check Valves ..150300WT Series Double Door Check Valves ..154600WT Series Double Door Check Valves ..158 Wafer Silent Check Valves Features ..163125WC Series Wafer Silent Check Valves ..164150WC Wafer Silent Check Valves ..168300WC Series Wafer Silent Check Valves ..172 Flanged Silent Check Valves Features ..177125FC Series Silent Check Valves ..178150FC Series Silent Check Valves ..182 Butterfly Valves Features ..187BF Series ..188 Reference & Piping Design.

5 195- 2 -Also Available from Duplex Strainers - Cast and Fabricated Foot Valves Automatic Self Cleaning Backwash Strainers Expansion Joints (Connectors) Pneumatic Actuators Custom ScreensCall813-978-1000 for more information- 3 -Y STRAINERSFEATURESFEATURES Low pressure dropstreamlined design Large strainer screens Compact end to enddimension Cast or FabricatedConstruction Y StrainersPressures to 3705 PSIGT emperatures to 800 F Process Industry Metals and Mining Power Industry Water and Waste Chemical Industry Pulp and Paper Oil and GasApplicationsSIZES Cast - 1/4" (6mm) up to 16"(400mm) Fabricated - Custom sizesto meet any requirementsRATINGS ANSI 125 psig ANSI 150 psig ANSI 300 psig ANSI 600 psig ANSI 900 psig ANSI 1500 psig ANSI 2500 psigENDCONNECTIONS Flat Faced Raised Face RTJ Flanged Buttweld Threaded (NPT) Socketweld SweatMATERIALS Cast Iron Ductile Iron Bronze Carbon Steel Low Temp Steel Chrome Molly Stainless Steel Other MaterialsUpon Request- 4 -Y STRAINERS DESIGNFEATURESBODY-COVERFLANGEDJOINTSF langed body-cover joints are designed to meetthe requirements of ASME Section VIII, Div.

6 1and/or ASME Series 150Y2 and 300Y2 strainers, thebody-cover joint is designed using the equationsfound in Appendix II of the ASME PressureVessel Code. Calculations are performed usingstandard gaskets and with the existence of aedge moment. The gasket cavity is fully enclosedensuring proper gasket alignment while preven-ting unwinding of spiral wound gaskets if 600Y2, 900Y2 and 1500Y2 strainersincorporate a body-cover joint that is in dimen-sional accordance with the flange dimensionsspecified in ASME Among the advantagesof this strong leak-proof design is the conveni-ence of using gaskets that are in accordancewith ASME and ASME Thisfeature eliminates the need for dimensionallyspecial gaskets when maintenance is STRAINER DESIGN FEATURESBODY-COVERTHREADEDJOINTSThe design of a strong threaded body-coverjoint is dependent on many factors.

7 Whendesigning these joints for strainers, calculationsare performed taking into account thread shear(ASME ), cover thickness and operating/gasket seating loads (ASME Sect. VIII, Div. 1).Basic dimensions such as wall thickness andband diameters are in accordance with 5 -Y STRAINERS DESIGNFEATURESY STRAINER DESIGN FEATURESEFFECT OF SCREEN AREA ON PRESSURE DROP% Clogged0 1020 3040501:1607080 Pressure Drop3:1 SOURCE: ASME Section VIII, Div. 1, Appendix the above formula, Leslie Controls can design andmanufacture any strainer screen to suit your specificstrength Leslie Controls Y-Strainers are manufacturedwith both upper and lower machined seats. Thisfeature eliminates debris by-pass while also acts tosecurely hold the screen in position when in assembly and disassembly purposes, LeslieControls Y-Strainers are designed so that thescreen is securely slid over or into a machined lipon the cover bonnet.

8 This allows the screen to beeasily guided into the upper machined seat particular, for Series 600Y2, 900Y2 and 1500Y2strainers, where the cover flange tends to be heavyand difficult to maneuver, the screen is also guidedaround it s circumference by the strainer body. Thisfeature eliminates the possibility of misaligning thestrainer screen during assembly while providingadditional support to the screen when in circumferential support reduces maintenancetime and costs since the strainer can beassembled quicker and safer than with Leslie Controls Y-Strainers are equipped withscreens that have an open flow area many timesgreater than the pipe nominal cross-sectionalarea. This is important in order to reduce initialpressure drop and decrease the rate in which thepressure drop increases as the strainer screenbecomes clogged. As shown in the figure thelarger the screen area the lower the rate ofincrease in pressure Y-Strainer screen must be strong enough tohandle the resulting differential pressure thatoccurs when in service.

9 In general all LeslieControls strainer screens are designed to handlea minimum burst pressure of 50 psid. Spencecalculates the burst pressure of screens usingthe formula:P =StR : Curves are for different ratios of free areato pipe PressureS=Reduced allowable stresst=Thickness of screen materialR=Outside radius of screen- 6 -125Y SERIESSTRAINERS125Y SERIESBRONZE, CAST IRON Y STRAINERSNPT, SWEAT ENDS, FLANGEDPRESSURES TO200 PSIG ( BARG)TEMPERATURES TO450 F (232 C) ANSI 125# rated strainers NPT, SE and FF flanges in accordance with ASME One piece cast body Upper and lower machined seats Generous screen area and properly proportionedstraining chamber to minimize intial pressure dropwhile maximizing time between 125Y1T - Bronze, NPT, Threaded Cover 125Y1E - Bronze, Sweat Ends, Threaded Cover 125Y2F - Cast Iron, Flanged, Bolted Cover0100-125Y1TB- A 2__12345678910111213141516 Inlet SizeModelAdd lDashBodyDashPerfMeshRequire-Materialmen ts125Y Series Ordering CodeDash- Position 5 Model- Position 6 - 11125Y1T125Y1E125Y2 FBody Material- Position 12I - Cast IronB - BronzeDash- Position 13 Mesh1, 2- Position 15 Leave Blank If NotRequired (std Y2F)

10 1 - 102 - 20 3 - 304 - 405 - 506 - 607 - 808 - 1009 - 120 Add l Requirements - Position 16 Leave BlankIf not RequiredD - Special Drain SizeF - Silicon FreeG - Special GasketsT - Special TestingX - Oxygen CleaningY - Other and / or Multiple SpecialsIndicate Specials Clearly On the Order1. Standard Screens: Y1T, Y1E 20 mesh, Y2F< 3" 3/64" perf, Y2F>3" 1/8" perf2. For other screen materials contact Steam, liquid, gas and oil service Power industry Pulp and paper Chemical industry Metal & Mining Water & WasteOPTIONS Other perforated screens and mesh liners Other drain connections and gasket materials Oxygen cleaning Special internal/external coatings and linings Contact factory for other options APPLICABLECODES ANSI ANSI Registration for CI 125Y2 FInlet Size- Position 1 - 40038 - 3 8"0050 - 1 2"0075 - 3 4"0100 - 1"0125 - 11 4"0150 - 11 2"0200 - 2"0250 - 21 2"0300 - 3"0400 - 4"0500 - 5"0600 - 6"0800 - 8"1000 - 10"1200 - 12"1400 - 14"1600 - 16"Perf1- Position 14304 SS Material2A - No Perf1 - 1/32" B - 3/644 - 1/8"2 - 1/16"3 - 3/32"5 - 5/32"6 - 3/16"7 - 7/32"8 - 1/4"9 - 3/8"- 7 -125Y SERIESSTRAINERSC onnections.