{"product_id":"duravent-b-vent-90-degree-elbow","title":"Duravent B-Vent 90 Degree Elbow","description":"\u003cp\u003e\u003cb\u003eThe Duravent Model BV 90 degree elbow turns a round Type B gas vent run between horizontal and vertical, or offsets it around an obstruction.\u003c\/b\u003e The 6\" and 8\" elbows are adjustable and rotate 360 degrees for alignment. The 10\" elbow, part number 10BVL90-1, is a fixed 90 with the large diameter DuraTab joint.\u003c\/p\u003e\n\u003ch2\u003eAt a glance\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6\", 8\" and 10\"\u003c\/strong\u003e: Diameters listed here\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable\u003c\/strong\u003e: 6\" and 8\", rotate 360 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\" clearance\u003c\/strong\u003e: To combustibles, USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory I gas only\u003c\/strong\u003e: Natural gas or LP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart numbers\u003c\/th\u003e\n\u003ctd\u003e6BVL90, 8BVL90, 10BVL90-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e6\" and 8\"\u003c\/th\u003e\n\u003ctd\u003eAdjustable, rotates 360 degrees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e10\"\u003c\/th\u003e\n\u003ctd\u003eFixed 90 degrees, not adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003ctd\u003eChanges between horizontal and vertical runs, or offsets around obstructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLateral runs\u003c\/th\u003e\n\u003ctd\u003eSupport at least every 5 feet, per the instructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eListed for\u003c\/th\u003e\n\u003ctd\u003eListed natural gas or LP Category I gas appliances with draft hoods, and appliances listed for Type B gas vent, with flue gases no hotter than 470°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNot for\u003c\/th\u003e\n\u003ctd\u003eCategory II, III or IV gas appliances, pressure-tight or liquid-tight vent systems, wood, pellet, coal or oil burning appliances, high-temperature exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance\u003c\/th\u003e\n\u003ctd\u003e1\" to combustibles (USA, 3\" to 30\" round)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eUL 441 and CAN\/ULC-S605\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eDuravent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eType B vent is for listed Category I gas appliances only.\u003c\/strong\u003e Duravent lists Model BV for natural gas or LP Category I appliances with draft hoods, and appliances listed for Type B gas vent. Do not use it on wood, pellet, coal or oil burning appliances, on Category II, III or IV gas appliances, or for high-temperature exhaust. A licensed gas professional should install the vent and make the gas connection to the instructions, NFPA 54 and local codes.\u003c\/p\u003e\n\u003ch2\u003eQuestions people ask us\u003c\/h2\u003e\u003ch3\u003eIs the 10\" elbow adjustable?\u003c\/h3\u003e\u003cp\u003eNo. Duravent lists the 10BVL90-1 as a \u003cb\u003efixed\u003c\/b\u003e 90 degree elbow. The 6\" and 8\" elbows adjust and rotate 360 degrees.\u003c\/p\u003e\u003ch3\u003eHow should a horizontal run be supported?\u003c\/h3\u003e\u003cp\u003eDuravent's instructions call for lateral runs to be supported at least \u003cb\u003eevery 5 feet\u003c\/b\u003e. The appliance manual and codes set how long the horizontal run may be.\u003c\/p\u003e\u003ch3\u003eCan I use this on a wood stove, pellet stove or oil furnace?\u003c\/h3\u003e\u003cp\u003eNo. Duravent lists Model BV Type B gas vent for \u003cb\u003elisted natural gas or LP Category I gas appliances\u003c\/b\u003e with draft hoods and appliances listed for Type B vent, with flue gases up to \u003cb\u003e470°F\u003c\/b\u003e. Its catalog warns that oil or wood burning appliances can damage the vent, and it is not for Category II, III or IV gas appliances. Wood and pellet appliances need a chimney or vent system listed for them.\u003c\/p\u003e\u003ch3\u003eWhat does the -1 at the end of the 10\" and 12\" part numbers mean?\u003c\/h3\u003e\u003cp\u003eIn Duravent's current Model BV catalog the 10\" and 12\" parts carry a \u003cb\u003e-1\u003c\/b\u003e suffix, for example 10BV12-1, and join with the \u003cb\u003eDuraTab\u003c\/b\u003e method: align the notches, slide together and press in the tab. Duravent's earlier catalog listed the same sizes without the suffix and with a DuraLock snap-in joint. Duravent's instructions do not cover mixing the two, so \u003ca href=\"\/pages\/contact-us\"\u003eask us\u003c\/a\u003e before joining a -1 part to older 10\" or 12\" pipe.\u003c\/p\u003e\u003ch3\u003eWho should install it?\u003c\/h3\u003e\u003cp\u003eDuravent warrants the vent fully only when a professional installer puts it in. A licensed gas professional should install the system to Duravent's instructions, NFPA 54 (the National Fuel Gas Code) and local codes. The appliance manufacturer's manual decides which venting is approved and the vent size and layout, so \u003ca href=\"\/pages\/contact-us\"\u003esend us the appliance model\u003c\/a\u003e and we will check.\u003c\/p\u003e","brand":"Duravent","offers":[{"title":"6\"","offer_id":67631400780050,"sku":"B6BVL90","price":152.6,"currency_code":"USD","in_stock":true},{"title":"8\"","offer_id":67631400812818,"sku":"B8BVL90","price":234.57,"currency_code":"USD","in_stock":true},{"title":"10\"","offer_id":67631400845586,"sku":"B10BVL90-1","price":415.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/duravent-b-vent-90-degree-elbow.jpg?v=1792597917","url":"https:\/\/www.aquaterrabackyard.com\/products\/duravent-b-vent-90-degree-elbow","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}