{"product_id":"festo-grla-1-8-qs-4-d-control-valve","title":"FESTO GRLA-1\/8-QS-4-D One-Way Flow Control Valve G1\/8 4mm","description":"\u003cstyle\u003e.nxs-industrial-product-page{--industrial-navy:#082f49;--industrial-blue:#0b4f7c;--industrial-blue-2:#0f6ea8;--industrial-blue-3:#1784c1;--industrial-cyan:#38bdf8;--steel-blue:#dcebf5;--steel-blue-2:#edf6fb;--steel-line:#c9dce9;--surface:#ffffff;--surface-soft:#f7fbfe;--text-main:#173042;--text-muted:#5e7382;--shadow-soft:0 10px 30px rgba(8,47,73,0.08);--shadow-hover:0 16px 36px rgba(8,79,124,0.15);--radius-lg:14px;--radius-md:10px;}.nxs-industrial-product-page,.nxs-industrial-product-page *{margin:0;padding:0;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;}.nxs-industrial-product-page{background-color:#f3f8fb;background-image:linear-gradient(180deg,#eef6fb 0,#f7fafc 320px,#eef3f7 100%),linear-gradient(rgba(15,110,168,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(15,110,168,0.025) 1px,transparent 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.section:last-of-type\u003ebr{display:block;content:'';margin:10px 0;}@media(max-width:760px){.nxs-industrial-product-page .container{width:100%;padding:0 12px 24px;}.nxs-industrial-product-page .section{padding:26px 17px 24px;margin:14px auto;border-radius:11px;}.nxs-industrial-product-page .section h2{font-size:21px;margin-bottom:18px;}.nxs-industrial-product-page .spec-table{table-layout:fixed;}.nxs-industrial-product-page .spec-table td{padding:11px 9px;font-size:13px;line-height:1.55;overflow-wrap:anywhere;}.nxs-industrial-product-page .spec-table td:first-child{width:42%;}.nxs-industrial-product-page .features,.nxs-industrial-product-page .section ul{grid-template-columns:1fr;}.nxs-industrial-product-page .card{padding:18px 17px;}.nxs-industrial-product-page .section:last-of-type\u003ep{padding:16px 14px 16px 48px;font-size:14px;}}\u003c\/style\u003e\n\u003cdiv class=\"nxs-industrial-product-page\"\u003e\n\u003cdiv class=\"container\"\u003e\u003cmain\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFESTO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eGRLA-1\/8-QS-4-D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eOne-Way Flow Control Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Function\u003c\/td\u003e\n\u003ctd\u003eExhaust Air One-Way Flow Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePneumatic Connection 1\u003c\/td\u003e\n\u003ctd\u003eG1\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePneumatic Connection 2\u003c\/td\u003e\n\u003ctd\u003eQS-4 Push-In Connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Outside Diameter\u003c\/td\u003e\n\u003ctd\u003e4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment Element\u003c\/td\u003e\n\u003ctd\u003eSlotted Head Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Position\u003c\/td\u003e\n\u003ctd\u003eAny\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"features\"\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eOne-Way Flow Control\u003c\/h3\u003e\n\u003cp\u003eThe GRLA-1\/8-QS-4-D combines flow restriction in one direction with free flow in the opposite direction for pneumatic speed-control applications.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eExhaust-Air Control\u003c\/h3\u003e\n\u003cp\u003eThe GRLA design is intended for one-way exhaust-air flow control, allowing the movement speed of suitable pneumatic drives to be adjusted.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eG1\/8 Thread Connection\u003c\/h3\u003e\n\u003cp\u003eThe valve uses a G1\/8 pneumatic threaded connection for installation on suitable pneumatic components.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eQS-4 Push-In Connection\u003c\/h3\u003e\n\u003cp\u003eThe QS-4 connection is designed for pneumatic tubing with a 4 mm outside diameter.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eAdjustable Flow Restriction\u003c\/h3\u003e\n\u003cp\u003eA slotted-head adjustment element provides mechanical adjustment of the restricted airflow for application-specific cylinder speed setting.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eCompact Pneumatic Control\u003c\/h3\u003e\n\u003cp\u003eThe combined threaded and push-in connection arrangement supports direct integration into pneumatic drive and tubing systems.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePneumatic cylinder speed control\u003c\/li\u003e\n\u003cli\u003eExhaust-air flow adjustment\u003c\/li\u003e\n\u003cli\u003ePneumatic drive control\u003c\/li\u003e\n\u003cli\u003eAutomation equipment\u003c\/li\u003e\n\u003cli\u003eHandling systems\u003c\/li\u003e\n\u003cli\u003eAssembly machinery\u003c\/li\u003e\n\u003cli\u003ePackaging equipment\u003c\/li\u003e\n\u003cli\u003eIndustrial pneumatic circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003ePurchase Information\u003c\/h2\u003e\n\u003cp\u003eWe support online purchase of the FESTO GRLA-1\/8-QS-4-D One-Way Flow Control Valve. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is FESTO GRLA-1\/8-QS-4-D?\u003c\/strong\u003e\u003cbr\u003eIt is a one-way flow control valve used to regulate airflow in pneumatic systems, particularly for exhaust-air speed control of suitable pneumatic drives.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the valve function?\u003c\/strong\u003e\u003cbr\u003eThe GRLA series is designed for one-way exhaust-air flow control.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the threaded pneumatic connection?\u003c\/strong\u003e\u003cbr\u003eThe GRLA-1\/8-QS-4-D uses a G1\/8 threaded pneumatic connection.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat tube size does the QS connection accept?\u003c\/strong\u003e\u003cbr\u003eThe QS-4 push-in connection is intended for pneumatic tubing with a 4 mm outside diameter.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does GRLA indicate in this FESTO valve series?\u003c\/strong\u003e\u003cbr\u003eGRLA identifies a one-way flow control valve configuration intended for exhaust-air flow control.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does QS-4 indicate?\u003c\/strong\u003e\u003cbr\u003eQS-4 identifies the push-in connection for 4 mm outside-diameter pneumatic tubing.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCan this valve be used to adjust cylinder speed?\u003c\/strong\u003e\u003cbr\u003eThe one-way flow control function can be used to regulate airflow and therefore adjust the movement speed of suitable pneumatic cylinders and drives.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the flow adjusted?\u003c\/strong\u003e\u003cbr\u003eThe flow restriction is mechanically adjusted using the valve's adjustment element.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhere is a one-way flow control valve typically installed?\u003c\/strong\u003e\u003cbr\u003eIt is commonly installed in pneumatic drive circuits where controlled airflow is required for motion-speed adjustment.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should be checked before ordering?\u003c\/strong\u003e\u003cbr\u003eVerify the complete GRLA-1\/8-QS-4-D model designation, G1\/8 threaded connection, QS-4 tube connection, required flow-control direction and the pneumatic requirements of the target system.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/main\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Festo","offers":[{"title":"Default Title","offer_id":46557836443727,"sku":"GJL-FESTO-GRLA-1\/8-QS-4-D","price":11.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/GRLA-18-QS-4-D.webp?v=1788161073","url":"https:\/\/yunshuotrade.com\/products\/festo-grla-1-8-qs-4-d-control-valve","provider":"yunshuotrade","version":"1.0","type":"link"}