{"title":"HepvO","description":"\u003cp\u003eHepvO makes the waterless sink trap: a self-sealing waste valve that replaces a conventional P-trap. Instead of holding a water seal, an internal membrane opens when water drains and closes afterward to help keep sewer and gray tank odors out of the living space. With no water seal, there's nothing to evaporate, siphon or freeze in the trap. It suits RV and camper sinks, lavatories, showers, boats and tiny homes where under-sink space is tight. Everything ships from our warehouse in Upland, California.\u003c\/p\u003e\n\u003ch2\u003eHepvO valves we list\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYou need\u003c\/th\u003e\n\u003cth\u003eOur listing\u003c\/th\u003e\n\u003cth\u003eKey facts from the listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eA waterless trap for a 1-1\/2 in RV sink or shower drain\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/sanitary-waste-valve\"\u003eHepvO 1-1\/2\" Waterless Sink Trap with Angled Adapter (BV1B\/UB)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e1-1\/2 in slip joint, white polypropylene, angled adapter included for horizontal or angled installs, no trap primer required. Alt. part numbers HepvO 5717 and WBV1BUB.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eConfirm your drain size before ordering: the valve we stock is 1-1\/2 in. Browse more \u003ca href=\"\/collections\/water\"\u003eRV water and plumbing parts\u003c\/a\u003e and \u003ca href=\"\/collections\/exterior-mainten-holding-tanks\"\u003eholding tanks\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"rvpg-brand-faq\"\u003e\n\u003cp\u003e\u003cstrong\u003eHepvO guides:\u003c\/strong\u003e \u003ca href=\"\/blogs\/blog\/hepvo-vs-generic-waterless-trap-rv\"\u003eHepvO vs Generic Waterless Traps vs a Traditional P-Trap\u003c\/a\u003e · \u003ca href=\"\/blogs\/blog\/hepvo-waterless-trap-install-rv\"\u003eHow to Install a HepvO Waterless Trap in Your RV\u003c\/a\u003e · \u003ca href=\"\/blogs\/blog\/rv-sink-smells-like-sewer-fix\"\u003eWhy Does My RV Sink Smell Like Sewer?\u003c\/a\u003e\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is a HepvO different from a P-trap?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eA P-trap relies on standing water to block sewer gas. A HepvO uses a self-sealing membrane instead, so it keeps working when the water seal would have evaporated, siphoned out on the road or frozen. See \u003ca href=\"\/blogs\/blog\/hepvo-vs-generic-waterless-trap-rv\"\u003eHepvO vs a traditional P-trap\u003c\/a\u003e.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan I replace my RV sink P-trap with a HepvO myself?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. It connects with a 1-1\/2 in slip joint, and the included angled adapter lets it sit horizontally or at an angle under the sink. Our \u003ca href=\"\/blogs\/blog\/hepvo-waterless-trap-install-rv\"\u003einstall guide\u003c\/a\u003e walks through the swap.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhy does my RV sink smell like sewer?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eUsually the trap's water seal has dried out or siphoned away while driving, letting gray tank air back up the drain. \u003ca href=\"\/blogs\/blog\/rv-sink-smells-like-sewer-fix\"\u003eCauses and the permanent fix\u003c\/a\u003e.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow do shipping and returns work?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThe HepvO valve ships free from Upland, California, in 3-7 days, with free 30-day returns using a prepaid label and no restocking fee.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eFound HepvO cheaper somewhere else?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eSend us the link before you order. Under our \u003ca href=\"\/pages\/lowest-price-guarantee\"\u003eLowest Price Guarantee\u003c\/a\u003e we'll beat it.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/brands\"\u003eSee every brand we carry\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c!-- \/rvpg-brand-faq --\u003e","products":[{"product_id":"sanitary-waste-valve","title":"HepvO 1-1\/2\" Waterless Sink Trap with Angled Adapter | BV1B\/UB","description":"\u003cp\u003e\u003cstrong\u003eFree Shipping \u0026amp; Free 30-Day Returns\u003c\/strong\u003e — prepaid return label, no restocking fee. \u003ca href=\"\/policies\/refund-policy\"\u003eDetails\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eUpgrade your RV plumbing with the HepvO 1-1\/2\" Waterless Sink Trap, a space-saving self-sealing waste valve designed for reliable odor protection in compact drain systems. Unlike a conventional P-trap, HepvO does not require a water seal. The internal membrane opens when water drains and closes afterward to help block foul sewer air from entering the living space.\u003c\/p\u003e\n\u003cp\u003eThis kit is well suited for RV sinks, camper kitchens, lavatories, showers, boats, tiny homes, and other tight plumbing spaces. The included angled adapter supports horizontal or angled installations, helping save space under sinks and inside cabinets while maintaining dependable drainage performance.\u003c\/p\u003e\n\u003ch3 class=\"rvpg-specs\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul class=\"rvpg-specs-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e HepvO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e BV1B\/UB (HepvO 5717, alt. WBV1BUB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Waterless sink trap \/ sanitary waste valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1-1\/2\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Slip joint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Angled adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\n\u003cli\u003eWaterless self-sealing design replaces traditional P-traps\u003c\/li\u003e\n\u003cli\u003eHelps prevent sewer and gray tank odors from entering the RV\u003c\/li\u003e\n\u003cli\u003eNo trap primer required\u003c\/li\u003e\n\u003cli\u003eHelps avoid water seal evaporation, siphonage, and freezing issues\u003c\/li\u003e\n\u003cli\u003eCompact design for tight under-sink or cabinet spaces\u003c\/li\u003e\n\u003cli\u003eSuitable for RVs, campers, trailers, boats, tiny homes, sinks, showers, and lavatories\u003c\/li\u003e\n\u003cli\u003eIncludes angled adapter for flexible installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eConfirm the valve size matches your existing tank fittings before ordering. Ships from Upland in 3–7 days.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSink has a 1-1\/4\" tailpiece?\u003c\/strong\u003e Choose the \u003ca href=\"\/products\/hepvo-waterless-sink-trap-1-1-4-bv1b-ua\"\u003eHepvO BV1B\/UA kit\u003c\/a\u003e instead. It's the same 1-1\/2\" valve with a 1-1\/4\" inlet adapter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHepvO guides\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/how-does-a-hepvo-valve-work\"\u003eHow does a HepvO valve work?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/hepvo-waterless-trap-install-rv\"\u003eHow to install a HepvO waterless trap in your RV\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/hepvo-valve-cleaning-maintenance-rv\"\u003eHow to clean and maintain a HepvO valve\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/hepvo-valve-leaking-troubleshooting\"\u003eHepvO valve leaking or slow draining? Troubleshooting guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/rv-sink-smells-like-sewer-fix\"\u003eWhy does my RV sink smell like sewer?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/hepvo-vs-generic-waterless-trap-rv\"\u003eHepvO vs generic waterless traps vs a P-trap\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HepvO","offers":[{"title":"Default Title","offer_id":51977164423469,"sku":"RVP-00810","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/5625\/2717\/files\/sanitary-waste-valve-white.jpg?v=1787509710"},{"product_id":"hepvo-waterless-sink-trap-1-1-4-bv1b-ua","title":"HepvO Waterless Sink Trap for 1-1\/4\" Tailpiece with Angled Adapter | BV1B\/UA","description":"\u003cp\u003e\u003cstrong\u003eFree Shipping \u0026amp; Free 30-Day Returns\u003c\/strong\u003e — prepaid return label, no restocking fee. \u003ca href=\"\/policies\/refund-policy\"\u003eDetails\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe HepvO BV1B\/UA kit is the version of the HepvO waterless sink trap for sinks with a \u003cstrong\u003e1-1\/4\" tailpiece\u003c\/strong\u003e, common on RV bathroom lavatories. It uses the same 1-1\/2\" HepvO valve as our \u003ca href=\"\/products\/sanitary-waste-valve\"\u003eBV1B\/UB kit\u003c\/a\u003e, but comes with a 1-1\/4\" in-line inlet adapter (CV7A\/U) instead of the 1-1\/2\" one. The outlet connects to standard 1-1\/2\" drain pipe.\u003c\/p\u003e\n\u003cp\u003eUnlike a conventional P-trap, HepvO does not hold a water seal. A self-sealing elastomeric membrane opens when water drains and closes afterward to block sewer and gray tank odor, so there is nothing to evaporate, slosh out on the road or freeze. The included angled adapter lets you install it horizontally or at an angle under shallow sinks.\u003c\/p\u003e\n\u003ch3 class=\"rvpg-specs\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul class=\"rvpg-specs-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e HepvO (Wavin)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e BV1B\/UA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Waterless sink trap \/ sanitary waste valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet:\u003c\/strong\u003e 1-1\/4\" slip joint via in-line adapter CV7A\/U\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet:\u003c\/strong\u003e 1-1\/2\" slip joint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit contents:\u003c\/strong\u003e BV1B\/U valve, CV11\/U angled adapter, CV7A\/U 1-1\/4\" in-line adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits sinks with a 1-1\/4\" tailpiece, such as many RV bathroom lavatories\u003c\/li\u003e\n\u003cli\u003eWaterless self-sealing design replaces a traditional P-trap\u003c\/li\u003e\n\u003cli\u003eHelps prevent sewer and gray tank odors from entering the RV\u003c\/li\u003e\n\u003cli\u003eNo water seal to evaporate, siphon or freeze\u003c\/li\u003e\n\u003cli\u003eInstalls vertically, or horizontally with the included angled adapter (ribs down, at least 1\/8\" fall per foot)\u003c\/li\u003e\n\u003cli\u003eHand-tight slip joints, no sealant needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHave a 1-1\/2\" tailpiece instead? Order the \u003ca href=\"\/products\/sanitary-waste-valve\"\u003eHepvO BV1B\/UB kit\u003c\/a\u003e. Measure your sink tailpiece before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHepvO guides\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/how-does-a-hepvo-valve-work\"\u003eHow does a HepvO valve work?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/hepvo-waterless-trap-install-rv\"\u003eHow to install a HepvO waterless trap in your RV\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/hepvo-valve-cleaning-maintenance-rv\"\u003eHow to clean and maintain a HepvO valve\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/hepvo-valve-leaking-troubleshooting\"\u003eHepvO valve leaking or slow draining? Troubleshooting guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/rv-sink-smells-like-sewer-fix\"\u003eWhy does my RV sink smell like sewer?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/blog\/hepvo-vs-generic-waterless-trap-rv\"\u003eHepvO vs generic waterless traps vs a P-trap\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HepvO","offers":[{"title":"Default Title","offer_id":68286585504045,"sku":"RVP-09814","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/5625\/2717\/files\/sanitary-waste-valve-white.jpg?v=1787509710"}],"url":"https:\/\/www.rvpartsgiant.com\/collections\/hepvo.oembed","provider":"RV Parts Giant","version":"1.0","type":"link"}