{"product_id":"brass-pneumatic-twist-lock-quick-connector-fittings-4-12mm","title":"Brass Pneumatic Twist Lock Quick Connector Fittings for Tube OD 4–12mm | PE PU PV PZA","description":"\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right tube OD size for these fittings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the outside diameter (OD) of your tubing — not the inside bore. Available sizes are 4mm (≈5\/32\\u201d), 6mm (≈1\/4\\u201d), 8mm (≈5\/16\\u201d), 10mm (≈3\/8\\u201d), and 12mm (≈1\/2\\u201d). Always match the fitting size to the tube OD for a leak-free seal.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the maximum working pressure these connectors can handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass twist lock pneumatic fittings of this type generally support working pressures up to approximately 150 PSI (≈10 bar) when used with compatible tubing. Confirm the rated pressure for your specific application before use.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these fittings be used outdoors or in humid environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass has inherent corrosion resistance and is generally suitable for moderately humid or damp environments. For prolonged outdoor or marine exposure, additional protective measures are typically recommended. Contact us to confirm suitability for your specific conditions.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What tubing materials are compatible with these quick connectors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These fittings are designed for use with PE (polyethylene), PU (polyurethane), PV (PVC), and PZA (nylon\/PA) pneumatic tubing. Always verify that the tubing OD matches the selected fitting size for a secure twist-lock connection.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does the twist lock mechanism work?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Insert the tube straight into the fitting until it seats fully, then twist to lock. To release, twist in the opposite direction and pull the tube out. This tool-free mechanism allows for quick installation and repositioning without special tools.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which fitting type should I choose — PE, PU, PV, or PZA?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The type designation typically refers to the tubing material the fitting is optimized for: PE for polyethylene lines, PU for polyurethane, PV for PVC, and PZA for nylon (PA) tubing. Match the fitting type to your tubing material for the best seal and longevity. If unsure, contact us to confirm compatibility.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these fittings reusable after disconnection?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, brass twist lock fittings are generally reusable. After disconnecting, inspect the O-ring and collet for wear before reconnecting. Replace any worn sealing components to maintain a leak-free connection.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eBrass Pneumatic Twist Lock Quick Connectors — Reliable Push-to-Connect Fittings for Air \u0026amp; Fluid Lines\u003c\/h2\u003e\n    \u003cp\u003eIf you've ever dealt with a leaking air line mid-project or spent frustrating minutes wrestling with a stubborn tube fitting, you know how much a dependable connector matters. DIYers, workshop owners, and light industrial users who run pneumatic systems with PE, PU, PV, or PZA tubing need a fitting that seats securely, releases cleanly, and holds pressure without constant re-checking.\u003c\/p\u003e\n    \u003cp\u003eEach piece is a solid brass twist lock quick connector machined to accept tube outside diameters (OD) from 4mm (≈5\/32\") to 12mm (≈1\/2\"). Available in five OD sizes — 4mm, 6mm (≈1\/4\"), 8mm (≈5\/16\"), 10mm (≈3\/8\"), and 12mm — and four fitting types (PE, PU, PV, PZA) to match your specific tubing material. Brass construction provides solid mechanical strength and resistance to corrosion in typical workshop and light industrial conditions.\u003c\/p\u003e\n    \u003cp\u003eThese brass pneumatic quick connectors are well suited for compressed air distribution lines in home workshops, pneumatic tool hookups, fluid transfer systems in light machinery, and irrigation control tubing. Whether you're routing an air line to a spray gun, connecting a pneumatic cylinder, or building a modular compressed air manifold, the twist lock mechanism lets you make and break connections quickly without tools.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003eℹ️\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e Select the fitting \u003cstrong\u003eType\u003c\/strong\u003e that matches your tubing material (PE, PU, PV, or PZA) and the \u003cstrong\u003eSize\u003c\/strong\u003e that matches your tube's \u003cstrong\u003eoutside diameter (OD)\u003c\/strong\u003e — not the inner bore. Mixing types or sizes may result in an improper seal.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These Brass Pneumatic Twist Lock Quick Connector Fittings\u003c\/h2\u003e\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSolid Brass Construction\u003c\/strong\u003e — Machined from brass for durability, corrosion resistance in workshop environments, and a longer service life compared to all-plastic push-in fittings.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTool-Free Twist Lock Mechanism\u003c\/strong\u003e — Insert and twist to lock; reverse-twist to release. Ideal for pneumatic quick connect fittings where fast tube swaps are needed without wrenches or clamps.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFive OD Sizes in One Listing\u003c\/strong\u003e — Covers 4mm through 12mm tube outside diameters, making it straightforward to source the right size for both metric pneumatic tubing and common workshop air line sizes.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧪\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMulti-Material Tubing Compatibility\u003c\/strong\u003e — Available in PE, PU, PV, and PZA variants so the fitting collet and seal geometry are matched to your specific tubing material for a consistent, leak-resistant connection.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePush-to-Connect Speed\u003c\/strong\u003e — The push-in design seats the tube in one motion, reducing assembly time on pneumatic control panels, air distribution manifolds, and fluid line installations.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e♻️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eReusable \u0026amp; Repositionable\u003c\/strong\u003e — Disconnect and reconnect without damaging the fitting body, making these connectors practical for prototype builds, temporary air line runs, and reconfigurable pneumatic systems.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eSpec Confirmation:\u003c\/strong\u003e Thread port size and exact pressure rating vary by fitting type and size. If your application has specific pressure or thread requirements, contact us before ordering to confirm compatibility.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — Brass Pneumatic Twist Lock Quick Connector Fittings\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003ePneumatic Tube Quick Connector \/ Twist Lock Coupler Fitting\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCompatible Tubing Types\u003c\/th\u003e\n\u003ctd\u003ePE (Polyethylene), PU (Polyurethane), PV (PVC), PZA (Nylon\/PA)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTube OD Range\u003c\/th\u003e\n\u003ctd\u003e4mm (≈5\/32\") \/ 6mm (≈1\/4\") \/ 8mm (≈5\/16\") \/ 10mm (≈3\/8\") \/ 12mm (≈1\/2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eConnection Style\u003c\/th\u003e\n\u003ctd\u003ePush-to-connect with twist lock release\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWorking Pressure\u003c\/th\u003e\n\u003ctd\u003eSee variant options — typically up to ~150 PSI; contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePort Thread Size\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece (1Pcs) per variant\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividual fitting; select type and tube OD above\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right tube OD size for these fittings?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure the \u003cstrong\u003eoutside diameter (OD)\u003c\/strong\u003e of your tubing — not the inside bore. Available sizes are 4mm (≈5\/32\"), 6mm (≈1\/4\"), 8mm (≈5\/16\"), 10mm (≈3\/8\"), and 12mm (≈1\/2\"). Always match the fitting size to the tube OD for a leak-free seal. When in doubt, use a caliper rather than estimating by feel.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the maximum working pressure these connectors can handle?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eBrass twist lock pneumatic fittings of this type generally support working pressures up to approximately 150 PSI (≈10 bar) when used with compatible tubing. Actual rated pressure may vary by size and fitting type. Confirm the rated pressure for your specific application — contact us if you need exact figures before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these fittings be used outdoors or in humid environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eBrass has inherent corrosion resistance and is generally suitable for moderately humid or damp indoor environments. For prolonged outdoor exposure, direct weathering, or marine conditions, additional protective measures are typically recommended. Contact us to confirm suitability for your specific installation conditions.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat tubing materials are compatible with these quick connectors?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThese fittings are designed for use with \u003cstrong\u003ePE\u003c\/strong\u003e (polyethylene), \u003cstrong\u003ePU\u003c\/strong\u003e (polyurethane), \u003cstrong\u003ePV\u003c\/strong\u003e (PVC), and \u003cstrong\u003ePZA\u003c\/strong\u003e (nylon\/PA) pneumatic tubing. Select the fitting type that matches your tubing material. Always verify that the tubing OD matches the selected fitting size for a secure twist-lock connection.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow does the twist lock mechanism work?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eInsert the tube straight into the fitting until it seats fully, then twist to lock. To release, twist in the opposite direction and pull the tube out. This tool-free mechanism allows for quick installation and repositioning without special tools — useful for pneumatic control panels and air distribution systems where lines are frequently reconfigured.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhich fitting type should I choose — PE, PU, PV, or PZA?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe type designation refers to the tubing material the fitting is optimized for: \u003cstrong\u003ePE\u003c\/strong\u003e for polyethylene lines, \u003cstrong\u003ePU\u003c\/strong\u003e for polyurethane, \u003cstrong\u003ePV\u003c\/strong\u003e for PVC, and \u003cstrong\u003ePZA\u003c\/strong\u003e for nylon (PA) tubing. Matching the fitting type to your tubing material ensures the collet and O-ring geometry provide the best seal. If unsure, contact us to confirm compatibility before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these fittings reusable after disconnection?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes, brass twist lock fittings are generally reusable. After disconnecting, inspect the O-ring and collet for wear before reconnecting. Replace any worn sealing components to maintain a leak-free connection over repeated use cycles.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your \u003cstrong\u003etype and tube OD size\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"PE \/ 4mm \/ 1Pcs","offer_id":52331554111762,"sku":"FXL397-0","price":4.28,"currency_code":"USD","in_stock":true},{"title":"PE \/ 6mm \/ 1Pcs","offer_id":52331554144530,"sku":"FXL397-1","price":4.75,"currency_code":"USD","in_stock":true},{"title":"PE \/ 8mm \/ 1Pcs","offer_id":52331554177298,"sku":"FXL397-2","price":5.15,"currency_code":"USD","in_stock":true},{"title":"PE \/ 10mm \/ 1Pcs","offer_id":52331554210066,"sku":"FXL397-3","price":5.83,"currency_code":"USD","in_stock":true},{"title":"PE \/ 12mm \/ 1Pcs","offer_id":52331554242834,"sku":"FXL397-4","price":8.5,"currency_code":"USD","in_stock":true},{"title":"PU \/ 4mm \/ 1Pcs","offer_id":52331554275602,"sku":"FXL399-0","price":3.52,"currency_code":"USD","in_stock":true},{"title":"PU \/ 6mm \/ 1Pcs","offer_id":52331554308370,"sku":"FXL399-3","price":4.07,"currency_code":"USD","in_stock":true},{"title":"PU \/ 8mm \/ 1Pcs","offer_id":52331554341138,"sku":"FXL399-6","price":4.2,"currency_code":"USD","in_stock":true},{"title":"PU \/ 10mm \/ 1Pcs","offer_id":52331554373906,"sku":"FXL399-9","price":4.88,"currency_code":"USD","in_stock":true},{"title":"PU \/ 12mm \/ 1Pcs","offer_id":52331554406674,"sku":"FXL399-12","price":5.51,"currency_code":"USD","in_stock":true},{"title":"PV \/ 4mm \/ 1Pcs","offer_id":52331554439442,"sku":"FXL400-0","price":4.69,"currency_code":"USD","in_stock":true},{"title":"PV \/ 6mm \/ 1Pcs","offer_id":52331554472210,"sku":"FXL400-1","price":4.69,"currency_code":"USD","in_stock":true},{"title":"PV \/ 8mm \/ 1Pcs","offer_id":52331554504978,"sku":"FXL400-2","price":5.24,"currency_code":"USD","in_stock":true},{"title":"PV \/ 10mm \/ 1Pcs","offer_id":52331554537746,"sku":"FXL400-3","price":6.19,"currency_code":"USD","in_stock":true},{"title":"PV \/ 12mm \/ 1Pcs","offer_id":52331554570514,"sku":"FXL400-4","price":7.87,"currency_code":"USD","in_stock":true},{"title":"PZA \/ 6mm \/ 1Pcs","offer_id":52331554603282,"sku":"FXL400-5","price":6.92,"currency_code":"USD","in_stock":true},{"title":"PZA \/ 8mm \/ 1Pcs","offer_id":52331554636050,"sku":"FXL400-6","price":7.87,"currency_code":"USD","in_stock":true},{"title":"PZA \/ 10mm \/ 1Pcs","offer_id":52331554668818,"sku":"FXL400-7","price":9.45,"currency_code":"USD","in_stock":true},{"title":"PZA \/ 12mm \/ 1Pcs","offer_id":52331554701586,"sku":"FXL400-8","price":11.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of9_27725b9b-7ce2-4d6f-8c4d-58dc290d4583.jpg?v=1781076154","url":"https:\/\/homediyer.com\/products\/brass-pneumatic-twist-lock-quick-connector-fittings-4-12mm","provider":"HomeDIYer","version":"1.0","type":"link"}