Marelon® Pro Series Valves


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Thru-hull / Sea Valve Installation Instructions and Maintenance

Forespar's Marelon® Integrated Plumbing Systems designed to meet your boats plumbing needs. Precision moulded plumbing systems for use above and below the waterline.

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Marelon® - Marine Grade Plumbing Systems

In the late 1970’s we (Forespar) undertook a search for a material that could replace the traditional bronze plumbing components used in boats.

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Know Your Thread Forms

MARINE thru-hulls, tailpipes, valves and seacocks have parallel threads known as “American Standard Straight Mechanical” pipe threads or “NPSM”. These require thread compound or Teflon tape to seal.

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What is MareLube TEF 45?

The ultimate in corrosion protection. Protects, lubricates, stops corrosion, prevents seizing and galling. Won't wash away in fresh or salt water or detergents.

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Seacock Replacement Instructions for Integrated Valves

Do Check your valves regularly. These are critical to the safety of your boat.

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