WEIR TYPE A DIAPHRAGM VALVES - Incledon

1 WEIR TYPE A DIAPHRAGM Box 5064, Benoni South 1502, South AfricaTel: +27 (11) 748 0200 Fax: +27 (11) 421 2749 Email: Website: June 2009 Weir Type A DIAPHRAGM ValvesRStrong and resilient, giving positive , easy, to use for fastoperation. Saves time and effortOther Methods of Operation - Fast acting levers, pneumatic and electricactuators - versatility to match individualneeds throughout the plant, without overinvestments. Ask for information onour Biman Pneumatic - (Std to Dn150)(Optional > D200)Positive identification of valve position tosave time and - Designed to reduce friction for lowoperating torqueSealing -Operating mechanism (stem andcompressor) isolated from service andatmosphere, avoids the need for exoticmetals. Fully sealed option available forcorrosive applicationsDiaphragm -Designed to assist flow and completelyisolate working parts from line - Weir design reduces DIAPHRAGM travelfor extended service and fine End Connections - Screwed, flanged end connections to suit UK, European, USAspecifications to avoid planning Materials-Natural and synthetic rubbers, nitrile,butyl, viton, hypalon and ptfe faced.

2 Allgive maximum processing security and, where required, food industry standardsof hygiene. Special diaphragms are produced for fire fighting, tank cleaning and washdeck services to comply withinternational standardscorrosive applicationsStrong and resilient, giving positive to assist flow and completelyisolate working parts from line design reduces DIAPHRAGM travelfor extended service and fine End Connections - Screwed, flanged and weld end connections suit UK, European, USAspecifications to avoid planning are shown as a guide only. Many aspects of service conditions will determine the highest working temperature. For example 325 diaphragms have VALVE BODY TEMPERATURE / PRESSURE RELATIONSHIPN atural and synthetic rubbers, nitrile,butyl, viton, hypalon and ptfe faced. Allgive maximum processing security and, of hygiene. Special diaphragms are produced for fire fighting, tank cleaning and washdeck services to comply withresistance, smooth flow-without exoticTEMPERATURE Maximum for VALVES DN8 to 150246810121416 PRESSURE (bar)0-60C0-40C0-20C0-0C020C040C060C080C 0100C0120C0140C0160C0180C Maximum for VALVES DN65 & 80 screwedand PTFE (214) DIAPHRAGM DN8 to 150 Maximum for VALVES DN200DN250DN300DN350 Weir - Body Linings and Coatings:Base materials cast Grey and SG :Combines strength and abrasion resistance for long service on chemical processing, water treatment and :(Hard, soft, butyl, neoprene);Corrosives and abrasives handled withlow initial outlay.

3 Popularity of rubberlinings results in exceptional availabilityEFTE:High abrasion resistance for tough services especially in fine chemicals, pharmaceuticals and Coating:Resists many industrial chemicals and additionally protects the exposed parts of value bodies - to cut out Glass Coating:Purity, smooth flow (especially on viscous fluids) with great strength and resistance to chemical attackLinings -For purity, abrasion and corrosionmetal materials:Cast iron and SG iron for strength and low cost on non-corrosive duties. Acid resisting bronze and gunmetal long life in hostile, corrosive water applications. Stainless steel-purity for serviceswhere profits depend on product protection. Solid hard rubber and polypropylene minimum weight combined with strengthGuide to DIAPHRAGM Applications:GRADE TYPICAL APPLICATIONSBAcid and alkalis. Up to 85% sulphuric acid at ambient hydrofluoric phosphoric acids, caustic alkalis and many esters.

4 Sea water, very low vapour and gas permeability. Inert gases and many industrial TO DN35000-40 to 100 Range availabilitySize0 Temp. CB(V)DN25 TO DN350 QAbrasives, water purification brewing, inorganic salts, mineral TO DN350Q (V)DN100 TO DN35000-50 to 100214/325 Highest chemical resistance to all fluids except alkali metals althoughpermeable to some, especially chlorine. Alternative backing diaphragmsavailable to deal with this and other : 214 grade has a bayonet fitting in all sizes except DN 8 and DN 10DN8 TO DN25000-20 to 160214/226 Requiring a corresponding slotted compressor00-5 to 175226 Paraffinic and aromatic hydrocarbons, acids, particularly concentratedsulphuric and chlorine applications. Not recommended for ammonia and its derivatives or for polar solvents, TO DN35000-5 to 150237 Good acid and ozone resistance certain chlorine servicesDN8 TO DN35000-10 to 100300 For hot water services applications involving steam sterilisations, therefore,ideally suited for brewing and pharmaceutical applications.

5 For servicesinvolving continuous high temperature / pressure combinations consultour technical TO DN35000-40 to 130300 (V)DN100 TO DN350 Pocketless design forcontamination freeperformance and smoothflow characteristics. 1. Valve Flow - For greater planning, flexibilityand ease of access. In the hori-zontal plane at 15 angle (flangescan be drilled to suit) the valve Valve usable in any position - Bonnet assembly lubricated for long life. The indicator lip seal stops the ingressof dust, dirt and Lubrication - Three part design ( bonnet (1), DIAPHRAGM (2),body(3) means the DIAPHRAGM is replaced withthe body in the pipeline, no gasket costs or pipeline disturbance problems are Maintenance - Padlocking to prevent expensiveinterference. Microswitch modelfor valve position indication to handle toxic or corrosivefluids with even greater Bonnet options - In larger sizes than 80mm weir type diaphragms are specially reinforced for vacuum duties and are identified by a suffix (V) Q (V).)

6 All (V) diaphragms have ferrous studs and are specified for applications requiring all iron and steel construction Ammonia, (V) diaphragms are available in sizes Dn 25 and larger to complete a full range of diaphragms with ferrous to grade letters / materialsB - Buty 214/226 - PTFE / Fluororubber 214/325 - PTFE/EP Rubber 300 - ButylQ - Natural Rubber 226 - Fluorubber 237 - HypalonGraph applies to whole valve performance (manual bon-nets). For actuated VALVES refer to appropriat performancegraphs. Temperature bands for diaphragms are shown asa guide only. Many aspects of service conditions will de - termine the highest working temprature. For example 325diaphragms have given exellent performance under certain conditions up to 150 is the registered trademark of ATO Chemical Products UK.

7 Halar is the registered trademark of Ausimont UK LimitedTMTMS aunders Type A DIAPHRAGM VALVES have been developed to handle more fluids and gasses thanany other valve. A wide choice is available for materials,methods of operation and body end connections to satisfy the needs of most industrial applications. Extended life, reliability, safety and ease of use, combined with an essentially simple design, result in low maintenance for minimum running costs. Both on pressure and vacuum, Saunders VALVES operate and close 100% leaktight performance guarantees profitable investmentGUIDE TO BODY (LININGS) APPLICATIONSBODY / LININGTYPICAL APPLICATIONSSIZE0 TEMP CCast IronDuctile Iron (SG)Strength, low cost non corrosivesDN15 - DN35000-20 to 175 Rubbers- Soft (SRL/AAL)- Hard (Ebonite) (HRL)- Butyl (BL)- Neoprene (NL)Economic handling of corrosive & abrasive mediaAbrasive dutiesAcid, chlorinated water, moist chlorineMineral acids, & slurriesAbrasive duties where hydrocarbons are presentDN15 - DN35000-10 to 8500-10 to 8500-10 to 11000-10 to 105 PolypropylenePPChemical & abrasion resistance in watertreatment and effluent handlingDN20 - DN15000-10 to 85 PerfluoroalkoxyPFAHigh temperature strong acid resisting applicationsDN20 - DN35000-20 to 175 TMHalarECTFEE xcellent resistance to mineral and oxidisingacids inorganic bases, saltsDN20 - DN35000-10 to 150 Fusion Bonded Epoxy FBEP otable water applicationsDN25 - DN35000-20 to 80 RANGE AVAILABILITYA R Bronze / GunmetalStainless SteelLong life in hostile, corrosive water applicationsPurity of service, protect protectionDN20 - DN15000-30 to 175 PolytetrafluoroethylenePTFEHigh temp mineral acids, aromatic.

8 Aliphatic andchlorinated solventsDN125 - DN25000-10 to 175 Ethylene TetrafluoroethyleneETFEHigh abrasion resistance, chemically resistant tostrong acids & basesDN20 - DN15000-10 to 150 Borosilicate GlassExcellent for strong acids, halogensDN20 - DN20000-10 to 175 TMRilsanPotable water applicationsDN20 - DN35000-20 to 80