Saunders A Type Diaphragm Valves

1 Saunders A Type Diaphragm ValvesValve Benefits for Corrosive and Abrasive Applications6 Crane Process Flow Te c h n o l o g i e sOur Saunders A Type Diaphragm Valves have been developed to handle a wider range of fluids and gases than any other valve type. A wide choice is available for materials, methods of operation and body end connections to satisfy the needs of most corrosive and abrasive design for contamination free p e rf o rmance and smooth flow characteristics. Linear operation ensure svalve does not induce damaging pre s s u re s u rges or static charges. T h ree part design allows maintenance and actuator re t ro f i t t i n gwithout removing thevalve from the this results inlower cost of ownershipc o m p a red to other valve pre s s u re and vacuum, Saunders Diaphragm Valves operate and close 100% leaktight even after thousands of operations.

2 This feature reduces p rocessing and handling costs, by eliminating emissions normally associated with conventional valve working parts of the Valves are isolated from the line media and positive c l o s u re is obtained even on frequent cycling or with entrained particulates in the line unlike quarter turn ball and butterfly Valves . Throttling and control characteristics are enhanced by a streamlined flow path that is cavity free and provides excellent flow control life, re l i a b i l i t y, safety and ease of use, combined with an essentiallysimple design, results in low maintenance for minimum running of maintenanceValve flowS a u n d e r s7 Bonnet assemblylubricated for long no additionalg rease. The indicator lipseal stops the ingress ofdust, dirt and atmosphericc o n t a m i n a t e s .Restricted valveoperation can beachieved by utilising the padlocking bonnet Saunders valve canbe installed to assist self-draining if re q u i re d.

3 Please consult us fordrainage angle Saunders valve can be installed in anyposition without aff e c t i n gits operation. However,we recommend 6x pipediameter from bend or usable inany positionSealed bonnetValve set for self drainingPadlock bonnetLubrication In cases where hazardous liquids or gases are being handled and where additional safety features a re considered to be n e c e s s a A Type Diaphragm ValvesMaterials of Construction Valve Bodies8 Crane Process Flow Te c h n o l o g i e sRubber lined body dataPlastic lined body featuresuSG iron body highmechanical strength uSG iron body mechanically supportsplastic lininguLining protected fromultraviolet (UV)uInjection gate to side ofweir flange means: lSmooth weir fordiaphragm sealing andzero leakagelLining lock-on weir flangeand in-bore inletlLining thickness range 3 5mm (DN20 DN150)uSoft rubber liningslButyl (Isobutyleneisoprene), 60 66 IRHDuHard ebonite rubberHRL, 75 85 Shore DuLining thickness range 2 (DN20 DN350)

4 CAST IRONBS EN 1561G J L 2 5 0 Flanged D N 15 D N 5 0 0SG IRONBS EN 1563G JS 4 50 1 0S c rewed D N 1 5 D N 5 0B SEN 1563G J S 4 00 1 8 Flanged D N 1 5 D N 1 5 0 GJS 400 18 LTCAST STEELASTM A216 WCBF langed D N 15 D N 1 0 0B R O N Z EB SE N1 9 8 2C C 4 9 1 K G SS c rewed D N 1 5 D N 5 0BS EN 1982C C 4 9 2 K G SFlanged D N 15 D N 1 0 0 STAINLESS STEELBS 31003 1 6 C 1 6S c rewed D N 1 5 D N 5 0BS 31003 1 6 C 1 6 Flanged D N 1 5 D N 1 5 0 Valve body lining production testsLined valve body sectionStandard Unlined Body MaterialLined valve weir planAll Saunders linedvalves have each bodyindividually tested forlining lining Spark test 10kV acuRubber, Butyl Spark test 14kV ac/dcuRubber, HRL Spark test 17kV ac/dcuPlastic lined Spark test 20kV ac/dcPneumatic Valve ActuationCompact actuators that providereliable remote control9S a u n d e r suH a rd Rubber NR/HRLUsed for salts in water, dilute mineral acids,chlorine water, de-ionised water, platingsolutions and potable Butyl Rubber IIR/BLGood for corrosive and abrasive slurr i e s ,mineral acids and acidic slurr i e s.

5 UG l a s sUsed in multi-process chemical plants onacids and o l y p ropylene PPMain applications include mineral acids, saltsin water, water and effluent tre a t m e n tc h e m i c a l s .uEthylene tetrafluoroethylene ETFES uitable for strong acids, salts in water athigher temperatures, solvents at mediumt e m p e r a t u re .uP e rf l u o roalkoxy PFAMost suitable for concentrated mineral acidsat high temperature, aromatic, aliphatic andchlorinated o l y t e t r a f l u o roethylene PTFEMost suitable for concentrated mineral acidsat high temperature, aromatic, aliphatic andchlorinated Body Lining Materials Visual Process Resistance GuidelPPlHRLlETFElGlasslButylA B R A S I O N R E S I S TA N C EHighlPTFE/PFAA Type valve bodyETFE linedA Type valve body hardrubber linedValve Body Linings for Saunders ValvesSaunders A Type Diaphragm ValvesMaterials of Construction Diaphragms10 Crane Process Flow Te c h n o l o g i e sWe at Crane Process Flow Technologies are proud of our corecompetence, the in-house manufacture of Saunders diaphragms foruse within our valve range.

6 Many years of experience has resulted in arange of diaphragms, which handle a wide variety of fluids with totals e c u r i t y. The guaranteed high perf o rmance of Saunders diaphragmsresults from stringent quality control and continuous flex perf o rm a n c euGood compre s s i o nset pro p e rt i e suChemical re s i s t a n c euAbrasion re s i s t a n c euA n t i - a g i n guA p p rovals, traceabilityRubber DiaphragmsThe polymer materialis bonded with a highs t rength wovenre i n f o rcement toe n s u re maximums t rength andd u r a b i l i t Diaphragm screw fixingPTFE Diaphragm bayonet fixingKey ConsiderationsDiaphragm ConstructionPTFE DiaphragmsA two piece construction PTFE face with a rubber backingdiaphragm to increase pre s s u re rating and durability. Thesediaphragms have a bayonet fitting to ensure reliable installation,reduced point loading and ensure maximum life.

7 The 214K ist h ree piece specially re i n f o rced for chlorine serv i c e .uC o n s t ructed with multi-layers of rubber andnylon re i n f o rc e m e n tuStuds are attachedwith bonding adhesiveand mechanicala n c h o r a g euRib on face for weirflange and across weirfor leak tight sealingand lower closuret o rq u euC o m p ressor support inboth the open andclosed positions forextended lifeS a u n d e r s11 Saunders A Type Diaphragm ValvesDiaphragm Materials of Constru c t i o nuFull traceability ofmanufactureuCoding tag for bothmaterial and batchnumber for easyidentificationuSaunders name toconfirm genuinemanufacture andmaximum reliabilityStandarduRubber diaphragmshave a brass studuDiaphragms suitablefor vacuum duties(eg. CV) have steelstuduPTFE diaphragms arefitted with stainlesssteel bayonetSaundersDiaphragms areprovided with.

8 GradeElastomer typeGeneral service and approvalsCButadiene Acrylonitrile, sulphur cured, Lubricating oil, cutting oils, paraffin, animal black reinforcedand vegetable oils, aviation keroseneCVButadiene Acrylonitrile, sulphur cured, Vacuum where oils are present,black reinforcedcompressed air, liquid petroleum gas (LPG)HTPolychloroprene, sulphur cured,Abrasive slurries containing hydrocarbonsblack reinforcedQNatural rubber polyisoprene/SBR,Salts in water, dilute acids and alkalies, abrasivessulphur cured, black reinforced226 Fluoroelastomer, amine cured,Concentrated acids, aromatic solvents, chlorine, ozone,black reinforcedchlorinated solvents, unleaded petroleum237 Chlorosulphonated polyethyleneStrong acids, sodium hypochlorite, chlorine gasmetal oxide cured, black reinforced286 Chlorosulphonated polyethylene metalFire mains isolation in WFB valveoxide cured, black reinforced Kevlarfabric reinforced300 Isobutylene Isoprene, resin curedSalts in water, dilute acids and alkalies, drinking water,black reinforcedFood &Drug Administration (FDA), United States Pharmacopeia (USP), Water Regulations AdvisoryScheme (WRAS)

9 425 Ethylene propylene (EPM)Salts in water, acids and alkalies, ozone, intermittentorganic peroxide cured, black reinforcedsteam,drinking water,FDA, USP, WRAS425 VEthylene propylene (EPM)Vacuum where acid, alkali, water vapours are present,organic peroxide cured, black reinforcedFDA, USP, WRAS214/226 Virgin PTFE/Fluoroelastomer two pieceStrong acids, solvents, chlorine, bromineat higher temperatures214/300 Virgin PTFE/Isobutylene isoprene Strong acids, alkalies and salts in water at hightwo piecetemperature. Constant steam, water for injection (WFI),biopharmaceuticals, FDA USP, WRAS214/425 Virgin PTFE/Ethylene propylene Strong acids, alkalies and salts in water at hightwo piecetemperature. Constant steam, water for injection (WFI),biopharmaceuticals, FDA, USP, WRAS214S/425 Virgin PTFE/PPVE/Ethylene propylene Strong acids, alkalies and salts in water at hightwo piecetemperature.

10 Constant and intermittent steam, WFI, biopharmaceuticals, FDA, USP, WRAS 214K/425 Virgin PTFE/PVDF/Ethylene propylene Chlorine, bromine gas and chlorinated solventsthree pieceSaunders A Type Diaphragm ValvesDiaphragm Materials12 Crane Process Flow Te c h n o l o g i e sSize DN81015202532405065801001251502002503003 50 Non-rising handwheel16161616161616161010101010 WFB and tank cleaning1515 Size DN8101520253240506580100125150200250 Non-rising handwheel65 Rising Handwheel1010101010101010101010107As with all Valves , the application and environment have a major bearing on actual valve operatinglimits, but the following can be used as a guide to the maximum operational assemblies with rubber Diaphragm Bonnet assemblies with PTFE faced Diaphragm Maximum working pre s s u re (bar) A Type valvesDiaphragm Materials Visual Process Resistance GuideMaterialGradePTFE214/214 KFluoroelastomer226 Chlorosulphonatedpolyethylene237 PolychloropreneHTNitrileC, CVButyl300, 300 VEPM425, 425 VNatural RubberQlNitrilelChlorosulphonated polyethylenelFluoroelastomerlPTFElPolych loroprenelButyl/EPMN atural RubberlA B R A S I O N R E S I S TA N C EHighDiaphragm PerformanceTe m p e r a t u re and Pre s s u re Relationship13S a u n d e r sValve Body Te m p e r a t u re / P re s s u re Relationship -60 C-40 C-20 C0 C20 C40 C60 C80 C100 C120 C140 C160 C180 C161412108642 MAXIMUM FOR Valves DN8-DN150 TEMPERATUREMAXIMUM FOR Valves DN200-DN350 -10 HARD RUBBER LINED85 -10 POLYPROPYLENE LINED ( )85 *-10 BUTYL RUBBER LINED110 -10 ETHYLENE TETRAFLUOROETHYLENE (ETFE)150 -10 CAST IRON.