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Amazon.com: Forespar Marelon Seacock - Mushroom Thru-Hull x Ball Valve x 90 Deg Hose Barb - OEM, 1-1/2" : Sports & Outdoors
Brass Thru Hull Kit - 3 Piece Kit Designed for 1" and 1 1/8" Fittings | SWELL Wakesurf
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1" Flush Thru-Hull Valve | West Marine
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Know how: Thru-hulls and Seacocks - Sail Magazine
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Hull Valves | Submarine Hull Valve Manufacturer | IMI Critical
The Fleet Type Submarine - Chapter 7
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FlowTech Performance Valves
