One-way flow control valves - Festo

1 One-way flow control valvesq/wFesto core product rangeCovers 80% of your automation tasksWorldwide:Always in stockSuperb: Festo quality at an attractive priceEasy:Reduces procurement and storing complexityqGenerally ready for shipping ex works in 24 hoursHeld in stock in 13 service centres worldwideMore than 2200 productwGenerally ready for shipping ex works in 5 daysAssembled for you in 4 service centres worldwideUp to 6 x 1012 variants per product seriesLook for the star!Subject to change 2019/042 Internet: flow control valvesKey featuresFunctionFlow control or One-way flow controlvalves regulate the piston speed ofpneumatic drives during advance andreturn strokes.

2 This is done throughsuitable restriction of the flow rate ofcompressed air in exhaust air orsupply air direction. With the one-wayflow control valve GRLA or GRLZ, theflow control function works in one dir ection only (exhaust air or supply air);the non-return function works in theopposite direction. With the flowcontrol valve GRLO, the flow controlfunction is active in both flow control function creates anadjustable annular gap inside thevalve. This gap can be increased or de creased by turning the knurled screwor slotted head screw. The requiredrestriction can be set with the help ofthis adjustment documentation for the flowcontrol valves can be found at informationStandard nominal flow rate qnNExhaust air One-way flow controlfunctionFlow measurement circuitThe standard nominal flow rate qnN isthe flow rate based on standardconditions at an operating pressure ofp1 = 6 bar and an output pressure ofp2 = 5 bar, measured at roomtemperature t = 20 gaugePressure gaugeFlow meter(flow measuring device)Flow control valveTest specimenp1p21 Supply port (pneumatic connection 1)2 Working line (pneumatic connection 2)

3 12p1 Operating pressurep2 Output pressureStandard flow rate qnThe standard flow rate is measured atan operating pressure of p1 = 6 barand an output pressure with respectto atmospheric pressure (p2 = 0 bar).Supply air One-way flow controlfunctionFlow control function in bothdirections2019/04 Subject to change3 Internet: flow control valvesKey featuresFlow control functions and range of applicationsApplicationDescriptionApplic ationDescriptionDouble-acting cylinder with One-way flow control valveExhaust air One-way flow control functionSupply air One-way flow control functionSpeed adjustment through exhaust airflow control . Uncontrolled supply airand controlled exhaust air move thepiston between air cushions (improvesmotion, even with load changes).

4 Adjustable speed during advance andreturn strokes. The flow rate is identicalin both cylinder with One-way flow control valveSingle-acting cylinder with flow control valveExhaust air and supply air One-way flow control functionFlow control function in both directionsAdjustable speed during advance andreturn strokes. The flow rate can beadjusted differently for both adjustment through flow controlon both sides is often applied in thecase of single-acting or small benefit of this application lies in examplesMini slide SLT with One-way flowcontrol valve, standardFlat cylinder DZF with One-way flowcontrol valve, miniSubject to change 2019/044 Internet: flow control valvesProduct range overviewVersionValve functionVersionTypeConnectiondirectionPn eumaticconnection 1 Pneumaticconnection 2qnN1)Adjustmentcomponent Page/Internet[l/min]StandardMetalExhaust air One-way flow controlfunctionGRLAE lbow outletQS-3, QS-4,QS-6, QS-8,QS-10, QS-12M5, G , G ,G , G 100.

5 1,580 Slotted headscrew8 Knurled screwM5, G , G ,Gy, G , G M5, G , G ,Gy, G , G 95 .. 4,320 Slotted headscrew12M5, G , G M5, G , G 95 .. 610 Knurled screwPK-3, PK-4,PK-6M5, G , G 83 .. 540 Slotted headscrew12 GRLSAE lbow outletQS-6, QS-8G , G 0 .. 450 Rotary knobwith scale,internal hex17 Supply air One-way flow controlfunctionGRLZE lbow outletQS-3, QS-4,QS-6, QS-8M5, G 100 .. 215 Slotted headscrew8M5, G , G M5, G , G 95 .. 610 Slotted headscrew12 Knurled screwPK-3, PK-4,PK-6M5, G , G 83 .. 540 Slotted headscrew12 VFOC-SElbow outletQS-4, QS-6 Push-insleeve2) QS-4,QS-60 .. 270 Slotted headscrew20 Nickel-plated metalExhaust air One-way flow controlfunctionVFOH-LEElbow outletQS-4, QS-6,QS-8, QS-10G , G 180.

6 530 External hex22 PolymerExhaust air One-way flow controlfunctionGRLAE lbow outletQS-6, QS-8G , G , G 520 .. 650 Knurled screw241)Standard nominal flow rate in direction of flow )Only suitable for push-in connector Subject to change5 Internet: flow control valvesProduct range overviewVersionValve functionVersionTypeConnectiondirectionPn eumaticconnection 1 Pneumaticconnection 2qnN1)Adjustmentcomponent Page/Internet[l/min]MiniMetalExhaust air One-way flow controlfunctionGRLAE lbow outletQS-3, QS-4M3, M540 .. 41 Slotted headscrew26M3M30 .. 18 Slotted headscrew29 Supply air One-way flow controlfunctionGRLZE lbow outletQS-3, QS-4M3, M541 .. 48 Slotted headscrew26M3M30.

7 18 Slotted headscrew29In-lineinstallationMetalOne-w ay flowcontrol functionGR/GRAI nlineM3, M5, G ,G , Gy,G , G M3, M5, G ,G , Gy,G , G .. 3,300 Knurled screwgrPolymerOne-way flowcontrol functionGRInlineQS-3, QS-4,QS-6, QS-8QS-3, QS-4,QS-6, QS-885 .. 265 Knurled screwgrCorrosion-resistantStainless steelExhaust air One-way flow controlfunctionCRGRLAE lbow outletM5, G , G ,Gy, G M5, G , G ,Gy, G 95 .. 2,100 Slotted headscrew31 FunctioncombinationPolymerExhaust air One-way flow controlfunctionVFOFE lbow outletQS-6, QS-8G , G 240 .. 590 Internal hexvfof1)Standard nominal flow rate in direction of flow to change 2019/046 Internet: flow control valvesType codesGRLA/GRLSA/CRGRLA/GRLZGRLA x QS 6 D TypeExhaust air One-way flow control functionGRLAOne-way flow control valve, elbow outletGRLSAOne-way flow control valve, elbow outlet with rotary knobCRGRLAOne-way flow control valve, elbow outlet, corrosion-resistantSupply air One-way flow control functionGRLZOne-way flow control valve, elbow outletPneumatic connection 2M3, M5, x, , y, , Male threadPneumatic connection 1 Connection type Female thread (connection size as for connection 2)

8 QSPush-in connector QSPKB arbed connectorTubing or tubing , 4, 6, 8,10, 12 Tubing with push-in connector QS3, 4, 6 Tubing with barbed connector PKAdjustment component Slotted head screwRSKnurled screwFlow rate characteristicLFLow flowMFMedium flowGenerationBB seriesCC seriesDD series 2019/04 Subject to change7 Internet: flow control valvesType codesVFOCVFOC S S6 Q6 TypeVFOCOne-way flow control valve, elbow outletValve functionSSupply air One-way flow control functionPneumatic connection 2S4 Push-in sleeve QS-4S6 Push-in sleeve QS-6 Pneumatic connection 1Q4 Push-in connector QS-4Q6 Push-in connector QS-6 VFOH-LEVFOH LE A G18 Q6 TypeVFOHOne-way flow control valveDesignLL-shaped outletValve functionEExhaust air One-way flow control functionAdjusting elementAExternal hexPneumatic connection 2G18 Thread GxG14 Thread G Pneumatic connection 1Q4 Push-in connector QS-4Q6 Push-in connector QS-6Q8 Push-in connector QS-8Q10 Push-in connector QS-10 Subject to change 2019/048 Internet.

9 Flow control valves GRLA/GRLZ, standardTechnical data Push-in connector QS, metalOne-way flow control functionExhaust airSupply air Can be swivelled 360 around thescrew-in axis after mounting-M-Flow rate100 .. 1,580 l/min-Q-Temperature range 10 .. +60 C-L-Operating .. 10 technical data GRLAV alve functionExhaust air One-way flow control functionPneumatic connection 2M5 GxG GyG Pneumatic connection 1QS-3, QS-4, QS-6QS-3, QS-4, QS-6,QS-8QS-6, QS-8, QS-10QS-6, QS-8, QS-10QS-12 Adjustment componentSlotted head screwKnurled screwType of mountingScrew-in, via male threadMounting positionAnyNominal tightening torque[Nm] 10%3 10%5 10%10 10%15 10%General technical data GRLZV alve functionSupply air One-way flow control functionPneumatic connection 2M5 GxPneumatic connection 1QS-3, QS-4, QS-6QS-3, QS-4, QS-6, QS-8 Adjustment componentSlotted head screwType of mountingScrew-in, via male threadMounting positionAnyNominal tightening torque[Nm] 10%3 10%Operating and environmental conditionsOperating pressure completetemperature range[bar].

10 10 Operating mediumCompressed air in accordance with ISO 8573 1:2010 [7:4:4]Note on operating/pilot mediumOperation with lubricated medium possible (in which case lubricated operation will always be required)Ambient temperature[ C] 10 .. +60 Temperature of medium[ C] 10 .. +60 Storage temperature[ C] 10 .. +40 Maritime classificationSee certificate1)1)Additional information nominal flow rate qnN at 6 > 5 bar as a function of turns of the adjusting screw nStandard flow rate qn at 6 > 0 baras a function of turns of the adjusting screw nGRLA/GRLZ-M5 GRLA/GRLZ-M5nqnN [l/min]qn [l/min]n2019/04 Subject to change9 Internet: flow control valves GRLA/GRLZ, standardTechnical data Push-in connector QS, metalStandard nominal flow rate qnN at 6 > 5 bar as a function of turns of the adjusting screw nStandard flow rate qn at 6 > 0 baras a function of turns of the adjusting screw nGRLA/GRLZ-xGRLA/GRLZ-xnqnN [l/min]qn [l/min] nqnN [l/min]qn [l/min]nGRLA-yGRLA-ynqnN [l/min]qn [l/min]nGRLA- GRLA- nqnN [l/min]qn [l/min]nSubject to change 2019/0410 Internet.