Sea Dog Stainless Steel 11'' Hatch Adjuster Additive In-Line Non-Return Check Valve -

In-Line Non-Return Check Valve - 1-1/2"

due to a virtual blow-out proof turbo venturi tube design

and you'll spot Dark Seas gear everywhere

When the temp is on the rise

Sea Dog Stainless Steel 11'' Hatch Adjuster Additive In-Line Non-Return Check Valve -Hatch Adjuster 11" Constructed of corrosion resistant formed 304 stainless steel with UV resistant injection molded nylon mounting pads and knob. These Hatch Adjusters feature a simple thumb screw knob to lock into position. Great for dock box lids, hatches, windshields, etc. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to