{"id":5282,"date":"2026-03-03T15:56:06","date_gmt":"2026-03-03T07:56:06","guid":{"rendered":"https:\/\/atfits.com\/?post_type=product&p=5282"},"modified":"2026-03-03T15:56:06","modified_gmt":"2026-03-03T07:56:06","slug":"541259-ms4-em1-1-4-s-on-off-valve","status":"publish","type":"product","link":"https:\/\/atfits.com\/es\/producto\/541259-ms4-em1-1-4-s-on-off-valve\/","title":{"rendered":"541259 MS4-EM1-1.4-S On.off valve"},"content":{"rendered":"

Festo MS4-EM1-1\/4-S On\/Off Valve (Order Code: 541259)<\/h1>\n
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Product Overview<\/h2>\n
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The Festo MS4-EM1-1\/4-S (Order Code: 541259) is a robust, manually operated 3\/2-way rotary gate on\/off valve from Festo\u2019s MS series, designed for reliable start-up, shut-off, and venting of pneumatic systems. Featuring a compact die\u2011cast aluminum housing, G1\/4 pneumatic connections, and an integrated silencer, it delivers high flow capacity with low pressure drop. Engineered for direct inline installation and flexible mounting in any orientation, this valve is ideal for controlling compressed air supply in industrial automation, assembly lines, packaging machinery, and pneumatic tool systemsFesto. Compliant with RoHS and VDMA standards, it offers durable performance in moderate corrosion environments and supports both lubricated and non\u2011lubricated compressed air operationFesto.<\/div>\n
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Main Functions<\/h2>\n
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Function<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
3\/2\u2011Way Pneumatic Control<\/td>\nProvides bistable on\/off switching: connects supply (port 1) to working port (port 2) in ON position; vents working port (port 2) to atmosphere in OFF positionFesto.<\/td>\n<\/tr>\n
Manual Rotary Actuation<\/td>\nEasy\u2011to\u2011grip rotary knob enables manual, tool\u2011free operation for quick system start\/stop and pressure relief.<\/td>\n<\/tr>\n
High\u2011Flow Capacity<\/td>\nDelivers a nominal flow rate of 2200 l\/min (DIN 1343), supporting efficient air distribution in medium\u2011to\u2011large pneumatic circuits.<\/td>\n<\/tr>\n
Integrated Silencer<\/td>\nBuilt\u2011in silencer reduces exhaust noise during venting, complying with industrial workplace noise regulations.<\/td>\n<\/tr>\n
Inline Installation<\/td>\nDesigned for direct, space\u2011saving inline mounting in pneumatic pipelines, with G1\/4 female threaded ports for secure connections.<\/td>\n<\/tr>\n
Flexible Mounting<\/td>\nOperates reliably in any mounting orientation, adapting to diverse machine layout requirementsFesto.<\/td>\n<\/tr>\n
System Venting<\/td>\nSafely vents residual air from pneumatic systems when shut off, preventing pressure buildup and ensuring safe maintenance access.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Technical Features<\/h2>\n
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Characteristic<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Order Code<\/td>\n541259<\/td>\n<\/tr>\n
Series<\/td>\nMS4\u2011EM1<\/td>\n<\/tr>\n
Valve Type<\/td>\n3\/2\u2011way bistable rotary gate on\/off valveFesto<\/td>\n<\/tr>\n
Actuation Type<\/td>\nManual rotary knob<\/td>\n<\/tr>\n
Pneumatic Connection<\/td>\nG1\/4 female threaded ports (ports 1, 2)<\/td>\n<\/tr>\n
Nominal Flow Rate<\/td>\n2200 l\/min (normalized to DIN 1343)<\/td>\n<\/tr>\n
Flow Coefficient (Cv)<\/td>\n9 l\/s\u00b7barFesto<\/td>\n<\/tr>\n
Operating Pressure Range<\/td>\n0 \u2013 14 bar (0 \u2013 1.4 MPa)<\/td>\n<\/tr>\n
Operating Medium<\/td>\nFiltered compressed air (ISO 8573\u20111:2010 [7:4:4]); inert gases; lubricated air optional (continuous lubrication required if used)Festo<\/td>\n<\/tr>\n
Ambient\/Media Temperature<\/td>\n-10 \u00b0C to +60 \u00b0CFesto<\/td>\n<\/tr>\n
Flow Direction<\/td>\nNon\u2011reversible (left\u2011to\u2011right)<\/td>\n<\/tr>\n
Exhaust Function<\/td>\nNon\u2011throttleable, with integrated silencer<\/td>\n<\/tr>\n
Corrosion Resistance Class<\/td>\nCRC 2 (moderate corrosion stress)Festo<\/td>\n<\/tr>\n
Compliance<\/td>\nRoHS compliant, VDMA 24364\u2011B1\/B2\u2011L, cULus approved<\/td>\n<\/tr>\n
Mounting Type<\/td>\nInline installation; any orientationFesto<\/td>\n<\/tr>\n
Grid Dimension<\/td>\n40 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Product Dimensions (mm)<\/h2>\n
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Dimension<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Width (W)<\/td>\n40<\/td>\n<\/tr>\n
Length (L)<\/td>\n54<\/td>\n<\/tr>\n
Height (H)<\/td>\n104<\/td>\n<\/tr>\n
Port Thread Size<\/td>\nG1\/4 female<\/td>\n<\/tr>\n
Rotary Knob Diameter<\/td>\n30<\/td>\n<\/tr>\n
Silencer Length<\/td>\n15<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Weight<\/h2>\n
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Item<\/th>\nTypical Weight<\/th>\n<\/tr>\n<\/thead>\n
Total Product Weight<\/td>\n210 g (0.21 kg)<\/td>\n<\/tr>\n
Housing (Die\u2011cast Aluminum)<\/td>\n170 g<\/td>\n<\/tr>\n
Rotary Knob & Internal Components<\/td>\n30 g<\/td>\n<\/tr>\n
Integrated Silencer<\/td>\n10 g<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Material Specifications<\/h2>\n
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Component<\/th>\nMaterial<\/th>\nKey Properties<\/th>\n<\/tr>\n<\/thead>\n
Valve Housing<\/td>\nDie\u2011cast aluminum<\/td>\nLightweight, high structural strength, moderate corrosion resistance<\/td>\n<\/tr>\n
Internal Seals<\/td>\nTPE\u2011U (Polyurethane)<\/td>\nExcellent wear resistance, sealing performance, and compatibility with compressed air<\/td>\n<\/tr>\n
Rotary Knob<\/td>\nHigh\u2011strength thermoplastic<\/td>\nErgonomic grip, chemical resistance, durable operation<\/td>\n<\/tr>\n
Silencer<\/td>\nPorous polymer<\/td>\nEffective noise reduction, resistance to oil and moisture<\/td>\n<\/tr>\n
Internal Slide<\/td>\nPrecision\u2011machined metal<\/td>\nLow friction, smooth rotary operation, long service life<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Installation & Operating Guidelines<\/h2>\n
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  1. Mounting<\/strong>: Install inline in pneumatic pipelines, ensuring flow direction matches the valve\u2019s non\u2011reversible left\u2011to\u2011right marking; secure with appropriate thread sealant to prevent leaks.<\/li>\n
  2. Actuation<\/strong>: Rotate the knob 90\u00b0 to switch between ON (supply connected) and OFF (vented) positions; ensure full rotation for reliable sealing.<\/li>\n
  3. Air Supply<\/strong>: Connect to clean, dry compressed air (0\u201314 bar); use proper filtration to protect internal seals from contaminants.<\/li>\n
  4. Lubrication<\/strong>: If using lubricated air, maintain consistent lubrication to avoid seal damage; do not mix lubricant types.<\/li>\n
  5. Maintenance<\/strong>: Periodically inspect the silencer for clogging; clean or replace if exhaust flow is restricted. No disassembly is required for routine maintenance.<\/li>\n
  6. Environmental Use<\/strong>: Operate within -10 \u00b0C to +60 \u00b0C; avoid exposure to aggressive chemicals to preserve housing integrity.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

    Festo MS4-EM1-1\/4-S On\/Off Valve (Order Code: 541259) Product Overview The Festo MS4-EM1-1\/4-S (Order Code: 541259) is a robust, manually operated<\/p>","protected":false},"featured_media":5283,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[96],"product_tag":[],"class_list":{"0":"post-5282","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-96","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"\n541259 MS4-EM1-1.4-S On.off valve - Autofits<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atfits.com\/es\/producto\/541259-ms4-em1-1-4-s-on-off-valve\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"541259 MS4-EM1-1.4-S On.off valve - 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