{"product_id":"1-4-npt-air-compressor-water-separator-150-psi-professional-filter-system-ai303-c1","title":"1\/4\" NPT Air Compressor Water Separator - 150 PSI Professional Filter System (AI303-C1)","description":"\u003cdiv class=\"product-summary-tldr\" style=\"margin-bottom:20px;padding:16px;background:#f0fdf4;border-left:4px solid #16a34a;border-radius:0 8px 8px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;font-weight:600;color:#15803d;\"\u003eProduct Summary\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe Le Lematec AI303-C1 is a 1\/4\" NPT air compressor water separator rated at 150 PSI. Aluminum construction with manual drain valve and clear inspection bowl. Removes water and particulates from compressed air lines. Price: ~$18. Factory direct from Le Lematec.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-style:italic;color:#166534;\"\u003eBest for: Budget-friendly moisture protection for air tools, spray guns, and pneumatic equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAir Compressor Inline Filter — Remove Moisture \u0026amp; Oil Contaminants\u003c\/h2\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eProfessional-Grade Water \u0026amp; Contaminant Removal for Peak Air Tool Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eThis high-efficiency water separator delivers pristine, contaminant-free air for all your pneumatic equipment. Built with premium aluminum construction and brass fittings, it features a 1-micron filter and one-way valve protection, operating seamlessly at pressures up to 150 PSI.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eProfessional Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eAdvanced Filtration\u003c\/strong\u003e: Reusable 1-micron filter removes water, oil, and dirt\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eQuick-Release System\u003c\/strong\u003e: Push-button drain valve for effortless maintenance\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eSafety Design\u003c\/strong\u003e: One-way valve prevents damaging backflow\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eUniversal Fit\u003c\/strong\u003e: 1\/4\" NPT male and female connections\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003ePremium Build\u003c\/strong\u003e: Aluminum body with solid brass fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eMaximum Pressure: 150 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eOperating Range: 2-150 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConnection Size: 1\/4\" NPT\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFilter Grade: 1 micron\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConstruction: Aluminum\/Brass\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eDrain Type: Push-button valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eAI303-C1 Water Separator\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eTeflon Tape\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eMale Connector\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eInstallation Guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eProfessional Workshops\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConstruction Sites\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eAutomotive Garages\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eVehicle Air Systems\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eIndustrial Settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cem\u003e\"Perfect for onboard air compressor... removes all water I was seeing before\"\u003c\/em\u003e - Verified Purchase, May 2023\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eUpgrade Your Air System Today\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does a water separator do for my air compressor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: A water separator removes liquid water and oil droplets from compressed air before they reach your tools. Without one, moisture causes rust inside air tools, fisheye defects in paint finishes, and premature wear on pneumatic equipment. The AI303-C1 uses centrifugal separation and a 5-micron filter for effective contamination removal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Where should I install the AI303-C1 in my air system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Install the AI303-C1 as close to your air tools as practical — after the compressor tank and after any main-line piping. For best results, mount vertically with the drain bowl at the bottom. If you have a long hose run, install at the end near the tool connection point.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How is the AI303-C1 different from the AI303?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The AI303-C1 is a compact water separator with 1\/4-inch NPT connections optimized for single-tool installations. The AI303 is a larger inline filter system with push-button drain and 1-micron filtration. Choose the AI303-C1 for individual tool protection and the AI303 for main-line filtration.\u003c\/p\u003e\n\u003cdiv class=\"enhanced-features\" style=\"margin-top:20px;\"\u003e\n\u003ch3 style=\"color:#0f172a;font-size:1.1em;\"\u003eWhy Professionals Choose This Tool\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eWater Separator Technology:\u003c\/strong\u003e Centrifugal action spins moisture out of compressed air before it reaches your tools\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eTeflon Tape Included:\u003c\/strong\u003e Everything needed for leak-free installation in one package — no extra trips to the hardware store\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eCompact 1\/4\" NPT Size:\u003c\/strong\u003e Fits standard home and small shop air systems without adapters\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eClear Bowl:\u003c\/strong\u003e Visual inspection of water level without disassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:25px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eAI303-C1 water separator filter\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eTeflon tape for leak-free installation\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003e1\/4\" NPT fittings\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eMounting bracket\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor with 1\/4\" NPT outlet, up to 150 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Tools\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAll 1\/4\" NPT pneumatic tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eInline between compressor and tool or at point-of-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"use-cases\" style=\"margin-top:15px;padding:12px;background:#f0fdf4;border-radius:8px;\"\u003e\u003cp style=\"margin:0;font-size:0.95em;\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e moisture removal, tool protection, home garage air system, small shop filtration, inline water separation\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"extra-faqs\" style=\"margin-top:20px;\"\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eWhat is the difference between a water separator and a desiccant filter?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eA water separator (like the AI303-C1) removes bulk liquid water using centrifugal force — it catches about 90% of moisture. A desiccant filter (like the ZN312-D) uses chemical media to absorb remaining water vapor for near-dry air. For most shop use, a water separator is sufficient. For spray painting and sensitive applications, use both in series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eDoes this filter remove oil from the air?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eThe AI303-C1 is primarily a water separator. It catches some oil droplets but is not a dedicated oil removal filter. For oil-free air (needed for painting and food-grade applications), add a coalescing filter downstream.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eRelated Guides \u0026amp; Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Unit Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/pneumatic-tool-maintenance-care-guide\"\u003ePneumatic Tool Maintenance Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eAir Compressor Accessories Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"related-products-links\" style=\"margin-top:20px;padding:15px;background:#f8f9fa;border-radius:8px;\"\u003e\n\u003ch3\u003eRelated Categories\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/air-tools\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ All Air Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c!-- pat-touch-2026-04-28-google-feed-resync --\u003e","brand":"Pro Air Tools","offers":[{"title":"Default Title","offer_id":48572053487831,"sku":"JJ-6Z3D-BSKY","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1911\/5479\/files\/le-lematec-ai303-c1-air-compressor-water-separator-inline-dryer-hero_webp.jpg?v=1777773335","url":"https:\/\/swiftcove-3.myshopify.com\/products\/1-4-npt-air-compressor-water-separator-150-psi-professional-filter-system-ai303-c1","provider":"Swiftcove","version":"1.0","type":"link"}