Remote and Direct Operated Poppet-Type On-Off …

1 Remoteand DirectOperatedPoppet-TypeOn-Off ValvesQuick-Acting2 & 3-Way Valves For Air, Liquid, Gas or Vacuum ServiceRemoteand DirectOperatedPoppet-TypeOn-Off ValvesCatalog LX-550-BSupercedes LX-550A2 Lexair Poppet-Type On-Off ValvesRemote or Direct Operated Valves for a Variety of Industrial and Process NeedsLexair Poppet-Type valves provide high flow, positive shut-off operation for a varietyof industrial and process control needs. Constructed of non-corrosive materials, theycan be used with a wide range of liquids and gases where quick-acting control , bubble-tight shut-off is accomplished by an exclusive poppet -seat designthat provides a long lasting, extrusion resistant seal. There s easy maintenance too,with quick access to valve internal parts without the need for removing in-linepiping.

2 Smaller port sized valves have one-piece poppet assemblies that arereplaced in seconds. These are important advantages when a valve is installed inhard-to-reach poppet Design on Larger Valve SizesTo minimize the pilot pressure required to actuate valves and assure fast operationwith viscous media, larger port sizes of solenoid and mechanical modelsincorporate a dual poppet design. Inlet media flows into the large poppet chamberthrough orifices so that line pressure is applied in the same direction as the poppetspring to hold both poppets closed. When the valve is actuated, the piston andoperating stem readily opens the inner poppet which has a small surface area thatrequires a minimal force to open. This immediately relieves the large poppetchamber pressure into the valve outlet so that less force is required to open thelarge poppet as the pin continues its stroke.

3 The entire sequence is instantaneous,insuring fast valve response with minimal operating effort. 3 For High Flow, Bubble-Tight ControlPilot CapAluminum hardanodized forcorrosion resistance(Optional: Nickel-platedbrass)Pilot Piston With U -Cup Sealsprovide low-frictionpositive , PoppetSeat Designassures leak-tightshut-off for hard-to-handle SealPoppet Constructionforhigh resistance toextrusion works in seal direction,assuring Line SizesFurnished withSingle, Direct -Acting poppet designin larger sizesoperate on a pressure differential,requiring minimalforce for , Air,Water,Oil, Vacuum EvenNon-Lube AirWide Range of PilotRatios for high mediapressure, low pilot pressure operation. U -Cup Stem Sealisolates controlled flowmedia from pilotchamber for multi-media Open opens largeorifice flow path comparable tomanual valve bodiesresist hammering,cracking addoutstanding Range of PortSizes.

4 1/4 to 2 pipe Husky BodyHexesfor heavy-dutypiping Service and models have readyaccessibility tointernal parts without removingpiping. One-piecepoppet assemblyon smaller sizes isreplaced in :Cast Bronze (ASTM B-61)Pilot Cap:AluminumInternal Parts:Brass and Stainless SteelSeals:Buna-N Standard (Optional Seals pg. 15)Temperature Range:-30 F to +225 F with StandardSeals (300 F with optional seals)Pressure Rating:0-500 PSIH igher pressure ratings available, consult factoryPilot Ratio:See Model Number Chart*Internal Line Pressure vs. Minimum Pilot Pilot OperatedNormally OpenAir, Oil, Water or VacuumThese Direct pilot Operated valves can be used with a variety of media where quick,positive control is required. With optional seals, they require no lubrication, making themideal for non-lube air feature a large resilient poppet that provides bubble-tight closure, even under lowpressure conditions.

5 Bronze, brass and stainless steel construction and choice of sealmaterials provide excellent compatibility with a wide range of cap is easily removed for quick access to valve s one-piece poppet assembly. Buna N o-ring on poppet and U-cup pilot piston seal prevent controlled media fromentering pilot chamber, permitting use of different media for pilot control. All sizesincorporate a single, Direct Operated poppet NumbersNPTPipe Size(Inches)CV FactorPilotRatio*Wgt.(Lbs.)Model 1/41 1 :18:11:18:11:18:11:18:11:13:11:13:11:14: 11:12 (inches)Pipe Size1/4 to 1/2 3/4 1 1 1/4 1 1/2 2 (inches)Pipe Size1/4 to 1/2 3/4 1 1 1/4 1 1/2 Figure 1 (Standard Pilot Ratios)For Figure 2 (High Pilot Ratios) Direct Pilot Operated5 Normally ClosedAir, Oil, Water or Vacuum*These Direct pilot Operated valves can be used with a variety of media where quick,positive control is required from an extremely low pilot signal.

6 With optional seals, theyrequire no lubrication, making them ideal for non-lube air feature a large resilient poppet that provides bubble-tight closure, even under lowpressure conditions. Bronze, brass and stainless steel construction and choice of sealmaterials provide excellent compatibility with a wide range of media. Available with avariety of pilot-to-line-pressure hex nut is easily removed for quick access to valve s poppet assembly. Buna-N U-cup seal on stem and U-cup pilot piston seal prevent controlled media from entering pilotchamber, permitting use of different media for pilot sizes from 1/4 to 3/4 have a threaded cap; valve models in larger sizes (as wellas valve models with 8:1 line pressure versus pilot pressure) have bolted pilot :Cast Bronze (ASTM B-61)Pilot Cap:AluminumInternal Parts:Brass and Stainless SteelSeals:Buna-N Standard (Optional Seals pg.)

7 15)Temperature Range:-30 F to +225 F with StandardSeals (300 F with optional seals)Pressure Rating:0-500 PSI *Vacuum (use -31 suffix)Higher pressure ratings available, consult factoryPilot Ratio:See Model Number Chart*Internal Line Pressure vs. Minimum Pilot NumbersNPTPipe Size(Inches)CV FactorPilotRatio*Wgt.(Lbs.)Model 1/41 1 :18:13:18:13:18:12:110:14:110:13:110:12: 110:11:110 (inches)1/4 to 1/2 Pipe SizeModels with an 8:1 Pilot Ratio and1 thru 2 PipeSize ValvesPipe Size1/4 to 1/2 3/4 (inches)Pipe Size1/4 to 1/2 1 1 1/4 1 1/2 2 to 3/4 Pipe Size ValvesStandard PilotRatioFigure 1 Figure 2 FIGURE 2 Direct Pilot Operated6 SpecificationsBody:Stainless Steel (304)Pilot Cap:Brass/Nickel PlatedInternal Parts:Stainless SteelSeals:Viton- ATemperature Range:-30 F to +300 Pressure Rating:0-500 PSI * Vacuum (use -31 suffix)Pilot Ratio:See Model Number Chart*Internal Line Pressure vs.

8 Minimum Pilot NumbersNPTPipe Size(Inches)CV FactorPilotRatio*Wgt.(Lbs.)Model :16:14:110 (inches)Pipe Size3/4 (inches)Pipe Size1 1 Figure 2 FIGURE 2 Normally ClosedAir, Oil, Water or Vacuum*These Direct pilot Operated valves can be used with a variety of mediawhere quick positive control is required from a low pilot for pressure applications with highly corrosive or ultra-pureliquid systems these Direct pilot Operated valves can be used wherequick positive control is required. The valve is ideal for a broad range ofindustrial applications, from electronics to petro-chemical plants,commercial laundries, car wash operations, feature a large resilient poppet that provides bubble-tight closure,even under low pressure conditions.

9 Bottom hex nut is easily removed forquick access to valve s poppet assembly. U-Cup seal on operating stemand U-cup pilot piston seal prevent controlled media from entering pilotchamber, permitting use of different media for pilot Direct Pilot Operated7 Normally ClosedAir, Oil, and WaterThese Direct pilot Operated valves can be used with a variety of media where quickpositive control is required from an extremely low pilot signal. With optional seals,they require no lubrication, making them ideal for non-lube air feature large resilient poppets that provide bubble-tight closure, even underlow pressure conditions. Bronze, brass and stainless steel construction and choiceof seal materials provide excellent compatibility with a wide range of hex nut is easily removed for quick access to valve s poppet :Cast Bronze (ASTM B-61)Pilot Cap:BronzeInternal Parts:Brass and Stainless SteelSeals:Buna-N Standard (Optional Seals pg.)

10 15)Temperature Range:-30 F to +225 F with Standard Seals(300 F with optional seals)Pressure Rating:0-500 PSI Dimensions (inches)Pipe Size1/2 3/4 1 NumbersNPTPipe Size(Inches)CV FactorPilot Ratio*ModelNumberWgt.(Lbs.)1/23 :15:15 *Internal Line Pressure vs. Minimum Pilot PressureEXH PORTB ronze Star 8 Direct Solenoid Operated Normally ClosedAir, Gas or Vacuum*Employing the latest pulse width modulated solenoid electronics, the new valveminimizes solenoid holding current while providing a much wider input voltage Direct solenoid design is ideal for use in vacuum, low pressure or high pressureapplications where pilot-assisted valves won t maintenance and high reliability are hallmarks of the Bronze Star valves due to theelimination of any small orifices that can clog during operation.