Raritan Joker Valve – Marine Toilet Discharge Check Valve
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Keep Your Marine Head Flowing — and Odour-Free
The Raritan Joker Valve is a one-way check valve designed for use in marine toilet (head) discharge systems. It allows waste to flow out while preventing backflow of water, odours, and waste into the bowl — a critical function for any properly operating marine sanitation system.
Made from durable, flexible rubber, the joker valve compresses to allow discharge and then seals shut, maintaining a reliable one-way flow path. Over time, these valves wear, harden, or deform, causing slow pumping, backflow, or persistent odours. Replacing the joker valve is one of the first and most effective steps in restoring a sluggish or leaking marine head.
Key Features
- One-way check valve — allows discharge, prevents backflow
- Flexible rubber construction for reliable sealing and long service life
- Direct replacement for compatible Raritan marine toilet models
- Eliminates odours and backflow caused by a worn or hardened valve
- Compact and lightweight — easy to install with basic hand tools
Specifications
- SKU: 78-C253
- Material: Flexible rubber
- Weight: 45 g
- Application: Marine toilet discharge system
Parts Desk Insights
Best Use Case: This is the first part to replace when a marine head is pumping hard, draining slowly, or allowing odours or water to seep back into the bowl. A worn joker valve is the most common cause of these symptoms and is far less expensive to replace than a full pump rebuild. Confirm compatibility with your specific Raritan toilet model before ordering — joker valve dimensions vary between models.
For related marine sanitation fittings, see our Anti-Vent Loop Connection – 2" Marine Toilet Fitting and Anti-Vent Loop Connection – 1" Marine Toilet Fitting. If you're considering a full head replacement, the Jabsco Quiet Flush E2 Compact Marine Toilet is a popular upgrade option.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.