The Pressure Relief Valve Accessory is an essential add-on designed to work in tandem with your water heater’s pressure relief valve. It provides a secure way to route discharged hot water safely away from equipment and living spaces. As a result, it helps prevent water damage and protects sensitive components in marine, RV, or off-grid systems.
This accessory typically includes a hose barb or threaded outlet that connects to a drain hose. By directing excess water into a designated drain area or catchment system, it ensures your setup remains clean and dry—even when the valve releases pressure. Additionally, it allows you to monitor discharge events easily, helping you spot issues like overheating or abnormal pressure build-up.
Manufactured from high-quality, heat- and corrosion-resistant materials, the Pressure Relief Valve Accessory performs reliably in high-temperature and high-humidity environments. Whether you’re navigating saltwater conditions or managing hot water discharge in a confined camper space, it resists wear and deformation over time.
Installation takes only minutes. Simply attach the accessory to the outlet of a compatible pressure relief valve using the provided fittings or hose connector. It works with most standard PRVs used in marine and recreational vehicle water heater systems. Because of its universal design, you can retrofit it into new or existing plumbing setups without hassle.
Beyond convenience, this accessory enhances the safety and cleanliness of your water system. It prevents hot water from spraying into sensitive spaces and reduces the risk of burns or equipment damage during a pressure release.
Directs hot water discharge safely away from equipment
Fits most standard water heater pressure relief valves
Heat- and corrosion-resistant materials
Supports flexible hose attachment for drainage
Ideal for marine, RV, and off-grid hot water systems
Easy to install and maintain
Improves safety, cleanliness, and monitoring
The Pressure Relief Valve Accessory adds peace of mind by controlling and routing hot water discharge where it belongs—away from you and your gear.
| Weight | 0.14 kg |
|---|---|
| Dimensions | 4 × 5.5 × 2.7 cm |
Set of five brass tails to provide connection of hoses from both engine cooling system and fresh water supply to Isotemp Slim and Basic water heaters. Kit includes 2 x 16mm barbed tails with 1/2″ BSP internal thread, 2 x 13mm straight tails with 1/2″ BSP internal thread and 1 x 13mm barbed tail with 1/2″ BSPM external thread. The engine connection tails accept 16mm hose and the fresh water connections accept 13mm hose.
Select at least 2 products
to compare
Hydraulic Steering Lock 
Cannon Clamp Mount 
Quintrex Port Horizontal Mount Chrome Nav Light - Red 
Manual Trailer Winch - Worm Drive 
