Boat Drain Check Valve — key benefits and features Why you need it Prevents backflow: stops water from coming back through drain holes so the interior of your boat or RV stays dry. Protects against damage: reduces moisturerelated problems in cabins, storage and bilge areas by maintaining oneway drainage. Reliable under harsh conditions: designed to work in both saltwater and freshwater environments and to handle extreme weather without failing. What it does Oneway drain valve that allows water to exit while blocking reverse flow through deck or cockpit drains. Efficiently removes excess water from cockpit areas and deck bilges to maintain good drainage capacity and reduce standing water. Key attributes Compatibility: suitable for yachts and RVs; intended for use with drain holes and bilge/cockpit drainage systems. Material: made from thickened, wearresistant ABS for durability and resistance to damage or deformation. Performance: weatherproof design that withstands exposure and continues to operate in harsh marine and road conditions. Ease of use: simple to operate and maintain for consistent performance in saltwater and freshwater applications. Typical applications and scenarios After a heavy rain while tied up: installs in cockpit or deck drains to prevent water from seeping back into the cabin or cockpit areas. Bilge and washdown drainage: lets bilge and washdown water exit quickly while preventing backflow during rough seas or when the vessel is heeled. RV lowpoint and exterior drains: keeps storage compartments and floors dry by stopping road splash or pooled water from reentering through drain openings. What to expect Durable, longlasting valve action with minimal maintenance. Reliable oneway drainage that helps preserve interior dryness and prevents reverse flowrelated problems. Suitable for use where oneway drainage is needed on yachts and RVs in both saltwater and freshwater environments.