Forespar MF Seacock Flange Mounted Available in the three most common sizes and thread configurations, Marelon Seacocks can be used as replacement valves for most existing marine thru-hull fittings. Forespar Marelon® is a proprietary composite reinforced polymer with additives that produce a superior marine-grade product for use above and below the waterline. These MF Flange Mounted Seacocks offer superior strength and corrosion resistance compared to conventional bronze type valves.
Strong, lightweight, corrosion and electrolysis free, they make the ideal thru-hull valve.
Marelon® Seacocks use NPSM parallel thread forms that require thread compound or Teflon® tape to seal. NOTE: Industrial or household fittings typically use the NPT (National Pipe Tapered) tapered thread. The marine valves, thru-hulls, tailpipes and seacocks used in boats employ the NPSM (National Pipe Straight Mechanical) parallel thread form. Tapered industrial fittings are not intended to be joined with parallel marine fittings. Forespar MF849 Marelon Seacocks Forespar Flange Mounting Seacock Installation Instructions Forespar Marelon Understanding Threadforms Forespar Marelon |