Marine Toilet Y-Valve (Bulkhead Mount)

A Marine Toilet Y-Valve is a critical component in a boat’s sanitation system, serving as a simple, manual flow diversion device. It allows the user to legally and safely direct wastewater from the toilet (head) to one of two destinations:

Overboard Discharge: Directly into the sea (where permitted by law).
Holding Tank: Into an onboard tank for later pump-out.

Overboard Discharge: Directly into the sea (where permitted by law).
Holding Tank: Into an onboard tank for later pump-out.

📋 Product Features

Parameter	Detail	Benefit
Material	Reinforced Nylon	Durable, corrosion-resistant, and compatible with marine sewage and chemicals (unlike many metals).
Mounting	Bulkhead Mount	Designed to be secured to a vertical wall or panel, keeping it stable and easily accessible.
Operation	Handle moves through $\text{120}^\circ$	Simple, clear positioning for quick selection of flow path.
Stops	Positive Stops	Ensures the handle locks securely into the selected position (Overboard, Holding Tank, or sometimes Off/Closed), preventing accidental flow diversion.
Function	Flow Diverter	Used to redirect water or waste streams.

💡 Applications

The Y-valve’s primary function is to comply with sanitation regulations by managing the effluent from the head.

Sanitation System: The most common use is diverting toilet waste between a holding tank (required in most harbors and inland waters) and the overboard discharge (permitted only offshore, typically beyond the $\text{3}$ -mile limit).
Bilge Pump Diversion: The valve can also be used to direct the output of a bilge pump to different outlets or systems.

Note: The use and positioning of the Y-valve are heavily regulated by maritime law (e.g., USCG and local authorities). In many regulated waters, the overboard discharge route must be secured or locked to prevent illegal discharge.