{"product_id":"1-2-bsp-female-straight-barb-hose-connector-plastic-4-20mm","title":"1\/2\" BSP Female Straight Barb Hose Connector – Plastic, 4–20mm","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 barb size for my hose?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the barb diameter to your hose's inner diameter (ID). For example, a 4mm barb fits a hose with a 4mm ID (approximately 5\/32\\\"\\u201d). Measure the inside of your hose before ordering. When in doubt, size down slightly — a snug barb creates a better seal than a loose one.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What thread standard does this connector use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These connectors use 1\/2\\\" BSP (British Standard Pipe) female thread. BSP is a parallel or tapered thread standard widely used in plumbing and fluid systems outside the US. It is NOT compatible with NPT (National Pipe Thread) fittings without an adapter.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these connectors be used outdoors or in wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The plastic body is generally moisture-resistant and suitable for low-pressure water, aquarium, and irrigation applications. However, prolonged UV exposure or extreme temperatures may degrade the material over time. For harsh outdoor or high-temperature environments, a metal fitting is typically recommended.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the maximum pressure rating for these fittings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Plastic barb fittings of this type are generally rated for low-pressure applications — typically up to 30–60 PSI depending on fluid type and temperature. They are well-suited for aquarium air pumps, gravity-fed water lines, and low-pressure fuel systems. Contact us to confirm if your application exceeds these ranges.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need a hose clamp with these barb connectors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For low-pressure applications such as aquarium air lines, a hose clamp is generally not required — the barb's ribbed profile creates a secure friction fit. For higher-pressure or vibration-prone applications (fuel lines, pressurized water), using a hose clamp is strongly recommended to prevent blowoff.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these fittings compatible with fuel lines?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These plastic connectors are generally suitable for light fuel applications such as small engines or gravity-fed fuel systems. However, compatibility depends on the specific fuel type and concentration. For gasoline, diesel, or chemical-heavy fluids, verify material compatibility before use or consider a fuel-rated nylon or brass fitting.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I convert barb sizes from mm to inches?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Common conversions: 4mm ≈ 5\/32\\\", 6mm ≈ 1\/4\\\", 8mm ≈ 5\/16\\\", 10mm ≈ 3\/8\\\", 12mm ≈ 1\/2\\\", 14mm ≈ 9\/16\\\", 16mm ≈ 5\/8\\\", 20mm ≈ 3\/4\\\". Always verify against your hose's actual inner diameter for the best fit.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e1\/2\" BSP Female Straight Barb Hose Connector — Reliable Plastic Fitting for Air, Water \u0026amp; Fuel Lines\u003c\/h2\u003e\n    \u003cp\u003eDealing with a leaky hose connection or struggling to find a fitting that actually matches your 1\/2\" BSP port? DIYers, aquarium hobbyists, and small-engine mechanics all run into the same frustration: mismatched thread standards and barb sizes that don't seal properly. These 1\/2\" BSP female straight barb hose connectors are designed to solve that problem with a straightforward, no-fuss connection between threaded ports and flexible hoses.\u003c\/p\u003e\n    \u003cp\u003eEach connector features a 1\/2\" BSP female threaded end and a straight barb tail available in sizes from 4mm (≈5\/32\") to 20mm (≈3\/4\"), covering the most common hose inner diameters used in aquarium, air, water, and light fuel systems. The body is made from durable plastic — lightweight, corrosion-resistant, and suitable for low-pressure fluid transfer. Available in packs of 2, 5, or 10 pieces so you can stock up for ongoing projects.\u003c\/p\u003e\n    \u003cp\u003eThese fittings are a go-to choice for aquarium air pump tubing connections, garden irrigation line repairs, small engine fuel line routing, and DIY water cooling setups. The straight barb profile makes them easy to push hose onto and provides a secure friction fit without additional tools — ideal for anyone building or maintaining fluid systems at home or in the workshop.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e\n    \u003cstrong\u003eThread Compatibility:\u003c\/strong\u003e 1\/2\" BSP (British Standard Pipe) female thread. \u003cstrong\u003eNot compatible with NPT fittings\u003c\/strong\u003e without an adapter. Barb sizes fit hoses with matching inner diameters from 4mm to 20mm.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These 1\/2\" BSP Female Straight Barb Hose Connectors\u003c\/h2\u003e\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e1\/2\" BSP Female Thread\u003c\/strong\u003e — Standardized BSP thread for secure, leak-resistant connection to 1\/2\" BSP male ports on pumps, tanks, and manifolds.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWide Barb Size Range (4–20mm)\u003c\/strong\u003e — Eight barb sizes cover the most common hose inner diameters, from 4mm (≈5\/32\") aquarium tubing up to 20mm (≈3\/4\") larger-bore hoses.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧪\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCorrosion-Resistant Plastic Body\u003c\/strong\u003e — Lightweight plastic construction resists rust and moisture, making it suitable for aquarium air line fittings, water irrigation, and low-pressure fluid systems.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTool-Free Hose Installation\u003c\/strong\u003e — The straight barb profile grips the hose interior on insertion, creating a friction-fit seal without clamps for most low-pressure aquarium and air applications.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Available in 2, 5, or 10-piece packs so you can grab just what you need for a single repair or stock up for larger plumbing or aquarium builds.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStraight Through-Flow Design\u003c\/strong\u003e — The inline straight configuration minimizes flow restriction, keeping air and fluid moving efficiently through aquarium pumps, fuel gravity feeds, and DIY water 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 Pressure ratings and chemical compatibility vary by application. If you are using these fittings with fuel, chemicals, or pressurized systems above 60 PSI, please contact us to confirm suitability before ordering.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — 1\/2\" BSP Female Straight Barb Hose Fittings\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Type\u003c\/th\u003e\n\u003ctd\u003e1\/2\" BSP (British Standard Pipe) Female\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP (not compatible with NPT without adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eConnector Style\u003c\/th\u003e\n\u003ctd\u003eStraight (inline)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBarb Sizes Available\u003c\/th\u003e\n\u003ctd\u003e4mm (≈5\/32\"), 6mm (≈1\/4\"), 8mm (≈5\/16\"), 10mm (≈3\/8\"), 12mm (≈1\/2\"), 14mm (≈9\/16\"), 16mm (≈5\/8\"), 20mm (≈3\/4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMax Pressure (typical)\u003c\/th\u003e\n\u003ctd\u003eGenerally up to 30–60 PSI (low-pressure applications) — Contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSuitable Fluids\u003c\/th\u003e\n\u003ctd\u003eAir, water, light fuel, aquarium use (verify chemical compatibility for other fluids)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePack Sizes\u003c\/th\u003e\n\u003ctd\u003e2 pcs \/ 5 pcs \/ 10 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHose Clamp Required\u003c\/th\u003e\n\u003ctd\u003eNot required for low-pressure; recommended for pressurized or vibration applications\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right barb size for my hose?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMatch the barb diameter to your hose's inner diameter (ID). For example, a 4mm barb fits a hose with a 4mm ID (approximately 5\/32\"). Measure the inside of your hose before ordering. When in doubt, size down slightly — a snug barb creates a better seal than a loose one. Common conversions: 6mm ≈ 1\/4\", 8mm ≈ 5\/16\", 10mm ≈ 3\/8\", 12mm ≈ 1\/2\", 16mm ≈ 5\/8\", 20mm ≈ 3\/4\".\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat thread standard does this connector use, and is it compatible with NPT fittings?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThese connectors use 1\/2\" BSP (British Standard Pipe) female thread. BSP is a widely used standard in plumbing and fluid systems, particularly outside the US. It is \u003cstrong\u003enot directly compatible with NPT (National Pipe Thread)\u003c\/strong\u003e fittings — the thread angles and pitches differ. A BSP-to-NPT adapter is required if connecting to NPT male ports.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these connectors be used outdoors or in wet environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe plastic body is generally moisture-resistant and suitable for aquarium, irrigation, and low-pressure water applications. Prolonged UV exposure or temperatures above typical ambient ranges may degrade the material over time. For harsh outdoor environments or high-temperature applications, a metal barb fitting is typically a better choice.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the maximum pressure these fittings can handle?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003ePlastic barb fittings of this type are generally rated for low-pressure applications — typically up to 30–60 PSI depending on fluid type and temperature. They are well-suited for aquarium air pumps, gravity-fed water lines, and low-pressure fuel systems. If your application exceeds this range, please contact us to confirm suitability before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these fittings compatible with fuel lines?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThese plastic connectors are generally suitable for light fuel applications such as small engines or gravity-fed fuel systems. Compatibility depends on the specific fuel type and concentration. For gasoline, diesel, or chemical-heavy fluids, verify material compatibility before use. For demanding fuel applications, a fuel-rated nylon or brass fitting is typically recommended.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need a hose clamp with these barb connectors?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eFor low-pressure applications such as aquarium air lines, a hose clamp is generally not required — the barb's ribbed profile creates a secure friction fit. For higher-pressure or vibration-prone applications (fuel lines, pressurized water systems), using a hose clamp is strongly recommended to prevent hose blowoff.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I convert barb sizes from mm to inches?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eCommon conversions for this product range: 4mm ≈ 5\/32\", 6mm ≈ 1\/4\", 8mm ≈ 5\/16\", 10mm ≈ 3\/8\", 12mm ≈ 1\/2\", 14mm ≈ 9\/16\", 16mm ≈ 5\/8\", 20mm ≈ 3\/4\". Always verify against your hose's actual inner diameter for the best fit and seal.\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 size and pack quantity above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"1\u00262\" Female × 4mm Barb \/ 2","offer_id":52335823585554,"sku":"WJT0914-0","price":2.3,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 4mm Barb \/ 5","offer_id":52335823618322,"sku":"WJT0914-1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 4mm Barb \/ 10","offer_id":52335823651090,"sku":"WJT0914-2","price":6.79,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 6mm Barb \/ 2","offer_id":52335823683858,"sku":"WJT0914-3","price":2.3,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 6mm Barb \/ 5","offer_id":52335823716626,"sku":"WJT0914-4","price":4.07,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 6mm Barb \/ 10","offer_id":52335823749394,"sku":"WJT0914-5","price":7.41,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 8mm Barb \/ 2","offer_id":52335823782162,"sku":"WJT0914-6","price":2.3,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 8mm Barb \/ 5","offer_id":52335823814930,"sku":"WJT0914-7","price":4.2,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 8mm Barb \/ 10","offer_id":52335823847698,"sku":"WJT0914-8","price":7.68,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 10mm Barb \/ 2","offer_id":52335823880466,"sku":"WJT0914-9","price":2.3,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 10mm Barb \/ 5","offer_id":52335823913234,"sku":"WJT0914-10","price":4.34,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 10mm Barb \/ 10","offer_id":52335823946002,"sku":"WJT0914-11","price":7.96,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 12mm Barb \/ 2","offer_id":52335823978770,"sku":"WJT0914-12","price":2.43,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 12mm Barb \/ 5","offer_id":52335824011538,"sku":"WJT0914-13","price":4.61,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 12mm Barb \/ 10","offer_id":52335824044306,"sku":"WJT0914-14","price":8.55,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 14mm Barb \/ 2","offer_id":52335824077074,"sku":"WJT0914-15","price":2.43,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 14mm Barb \/ 5","offer_id":52335824109842,"sku":"WJT0914-16","price":4.88,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 14mm Barb \/ 10","offer_id":52335824142610,"sku":"WJT0914-17","price":9.1,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 16mm Barb \/ 2","offer_id":52335824175378,"sku":"WJT0914-18","price":2.52,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 16mm Barb \/ 5","offer_id":52335824208146,"sku":"WJT0914-19","price":5.24,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 16mm Barb \/ 10","offer_id":52335824240914,"sku":"WJT0914-20","price":9.72,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 20mm Barb \/ 2","offer_id":52335824273682,"sku":"WJT0914-21","price":2.71,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 20mm Barb \/ 5","offer_id":52335824306450,"sku":"WJT0914-22","price":5.78,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" Female × 20mm Barb \/ 10","offer_id":52335824339218,"sku":"WJT0914-23","price":10.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of3_1.jpg?v=1781167115","url":"https:\/\/homediyer.com\/products\/1-2-bsp-female-straight-barb-hose-connector-plastic-4-20mm","provider":"HomeDIYer","version":"1.0","type":"link"}