Flow-Rite’s System 3 Marine Control Valve is a high-quality, reliable and durable valve designed for use in marine applications. This valve features a compact, space-saving design that allows for easy installation in tight spaces, making it an ideal choice for boats and other watercraft.
Like the V2, the V3 is a reversible check valve that allows a single pump to not only perform the basic livewell functions necessary to keep your catch alive, but does it in a passive or automatic manner. It also has a third closed “RECIRC” position. By mounting the pump to the valve body, the operator only has to decide whether he wants his livewell functioning or empty. When the first fish is caught, place the valve in the “AUTO” position and turn on the pump. When the boat is off plane the pump will recirculate and aerate the livewell water and simultaneously blend in a portion of fresh lake water. Used livewell water is expelled out the overflow as fresh water enters to prevent any ammonia build up.
When the boat is put on plane, the valve’s check flapper will prevent water loss out the drain, and allow the pump to continue its recirculation duties. Any water lost out the overflow while running on plane is automatically made up when the boat is brought off plane at the next fishing location. All this is accomplished without any operator assistance.
For those times when outside water is not wanted or available, such as, adding ice, livewell additives, going through locks, traveling to out of water weigh-ins, dockside refueling or using our optional Pump-out / Venturi Aerator, place the valve in the “RECIRC” position.
To empty, simply turn off the pump and move the valve to the “EMPTY” position for gravity draining.
Livewell Control Systems Guide
Valve Cable Approach Guide
Only specific PEF for higher profile walleye and bay boats where the livewell overflow is 8″-12″ above Lake level. If it it’s more than 12″ use the V4 valve. PEF is not generally required for low profile bass boats.
While off plane, in the Auto position, water enters the valve from both the livewell drain and the transom thru-hull. As the water level in the livewell increases so does the pressure on the transom check feature of the valve, reducing the ration of fresh to recirculated water. When this pressure is too great, PEF insures that enough fresh water is added to force the upper used water out.