Raritan WH3 Pressure Relief Valve for Marine Water Heaters
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You have 30 days to request a return. All sale items are final sale.
Raritan WH3 Pressure Relief Valve for Marine Water Heaters
A critical safety component for any marine water heater installation. The Raritan WH3 pressure relief valve automatically releases excess pressure from the water heater tank if it exceeds safe operating limits — protecting the tank, the plumbing, and the people aboard from the risks of an over-pressurized system. It’s a direct replacement for the factory-installed PRV on Raritan marine water heaters, and a straightforward swap that restores the safety system to full working order.
Key Features
- Automatic pressure relief — opens to release excess tank pressure before it reaches dangerous levels
- Direct replacement for the factory PRV on Raritan marine water heaters
- Essential safety component for any pressurized marine hot water system
- Compact, durable construction built for the marine environment
Compatible Applications
- Raritan 6-gallon marine water heater (120V AC)
- Raritan 12-gallon marine water heater (120V AC)
- Raritan 20-gallon marine water heater (120V AC)
- Any Raritan marine water heater requiring PRV replacement
Parts Desk Insights
The pressure relief valve is a safety-critical part — if yours is weeping, discharging unexpectedly, or has never been replaced on an older heater, it should be swapped out promptly. A faulty PRV that fails to open under over-pressure conditions is a serious risk; one that opens too easily wastes hot water and signals a pressure issue elsewhere in the system. This valve is the correct replacement for the full Raritan water heater lineup: the Raritan 6-Gallon Marine Water Heater, the Raritan 12-Gallon Marine Water Heater, and the Raritan 20-Gallon Marine Water Heater. While you’re servicing the heater, the Raritan WH16 Thermostat Assembly, Raritan Bolt-On Heating Element, and Raritan Screw-On Heating Element are the other common service parts.
Part Number: WH3 | Type: Pressure Relief Valve | Fits: Raritan Marine Water Heaters
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.