{"product_id":"qbp670240","title":"Jabsco Joker Valve","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\u003cp\u003eThe Jabsco 29092-1000 is a replacement joker valve for select Jabsco marine toilets and conversion kits, including models 29090, 29120, 29200, 58040, 58060, 58080, 58240, 58260, 58280, and 58500.\u003c\/p\u003e\u003cp\u003eThis is the one-way discharge valve that helps stop waste and flush water from creeping back toward the bowl after the pump cycle. It is a small service part, but it has a direct effect on how cleanly the toilet flushes and how well the discharge side holds its seal.\u003c\/p\u003e\u003cp\u003eFor boat owners servicing an older Jabsco head, this is the part to check when the toilet starts to lose discharge control or the bowl does not clear the way it should. It suits both manual Jabsco toilets and several electric toilet layouts that use the same joker valve in the discharge path.\u003c\/p\u003e\u003ch6\u003eKey features\u003c\/h6\u003e\u003cul\u003e\n\u003cli\u003eReplacement joker valve for select Jabsco manual and electric marine toilets\u003c\/li\u003e\n\u003cli\u003eFits models 29090, 29120, 29200, 58040, 58060, 58080, 58240, 58260, 58280, and 58500\u003c\/li\u003e\n\u003cli\u003eHelps maintain one-way discharge flow and reduce backflow into the bowl after flushing\u003c\/li\u003e\n\u003cli\u003eUsed across both manual toilet assemblies and electric toilet systems that share this valve format\u003c\/li\u003e\n\u003cli\u003eUseful service part when the old valve has hardened, distorted, or no longer closes cleanly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eCompatibility and fit\u003c\/h6\u003e\u003cp\u003eThis valve is meant for specific Jabsco toilet families, not as a universal sanitation valve. Match the toilet or conversion-kit model before ordering, especially on boats that have had pump or toilet upgrades over time.\u003c\/p\u003e\u003cp\u003eIt is a good fit for owners maintaining Jabsco manual heads in the 29090 and 29120 range, as well as Jabsco electric toilet systems built around the listed 58-series and 58500 layouts. On mixed-age boats where the toilet may have been repaired more than once, checking the existing valve during service is the safest way to confirm fit.\u003c\/p\u003e\u003ch6\u003eInstallation and service\u003c\/h6\u003e\u003cp\u003eThe joker valve sits in the discharge side of the toilet system, so replacement is usually part of routine toilet service rather than a full system rebuild. Before opening the toilet or discharge housing, close the seacocks and isolate the system the same way you would for any sanitation maintenance below deck.\u003c\/p\u003e\u003cp\u003eWhen the old valve no longer keeps its shape, discharge can slip back after a flush and the toilet can start to feel less crisp in use. Replacing this part at that stage is a practical maintenance job for cruising boats, fishing boats, and day boats that rely on a Jabsco head for regular onboard use.\u003c\/p\u003e","brand":"Jabsco","offers":[{"title":"Default Title","offer_id":52023979311285,"sku":"QBP670240","price":20.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/8171\/1029\/files\/1330015_qbp670240.jpg?v=1780192069","url":"https:\/\/www.qualityboatparts.com\/products\/qbp670240","provider":"Quality Boat Parts","version":"1.0","type":"link"}