Marine Plumbing

We have a comprehensive selection of Boat Plumbing parts such as Seacocks, Ball Valves, Thru-hulls / Skin Fittings, Water Strainers, Vents, Hose Connectors, Sink Wastes, Deck Fills, and Drains and Drain Plugs, all provided by the brands we distribute.

Forespar Marelon® Marine Plumbing offers durable, lightweight, and internationally approved underwater systems that will provide you with years of hassle-free, non-corrosive, and electrolysis-free use.

Marelon® is the contemporary substance utilized in marine plumbing systems. Its unique blend of polymer composite compounds, including resins and additives, creates an extremely strong marine-grade product that is a non-corrosive proprietary formulation and does not experience the same degradation as traditional bronze marine plumbing components.

Forespar Marelon Plumbing Valve 93 Series

Forespar's fully integrated Marelon® “93 Series” Seacocks & Thru-hulls are designed to provide easy installation with a wide variety of valve port configurations. 

We have been the distributor for Forespar in this region for many years, which has given us extensive familiarity with the range of boat plumbing fittings available in their product line.

Marine Grade Glass Reinforced Composite Polymer Plumbing

  • For Use Above or Below Waterline
  • Extremely Builder Customizable
  • Exclusive Polymer Formulation that will never corrode
  • Temperature Range: -40°C to 80°C

For access to the Installation Instructions, Maintenance tips, and Certifications, please visit the Forespar Marine Plumbing Catalogues and tech sheets section of our website.

1 1/8" Hose Tailpipe Mushroom Head Thru-Hull

1 1/8" Hose Tailpipe Mushroom Head Thru-Hull

$35.50
1" Ball Valve MF 850

1" Ball Valve MF 850

From $157.70
See Buying Options
1" Flush Head Full Threaded Thru-hull CF 250

1" Flush Head Full Threaded Thru-hull CF 250

From $32.50
See Buying Options
1" Hose Tailpipe Mushroom Head Thru-Hull

1" Hose Tailpipe Mushroom Head Thru-Hull

$35.50
1" Hose Tailpipe Screened Mushroom Head Thru-Hull

1" Hose Tailpipe Screened Mushroom Head Thru-Hull

$44.45
1" Hose with 1-3/4" Thru hull seacock

1" Hose with 1-3/4" Thru hull seacock

$229.25
1" Mushroom Head Full Threaded Thru-Hull

1" Mushroom Head Full Threaded Thru-Hull

From $35.50
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1" Screened Flush Head Full Threaded Thru-hull CF 250

1" Screened Flush Head Full Threaded Thru-hull CF 250

$44.45
1-1/2" Flush Head Drain Thru-Hull

1-1/2" Flush Head Drain Thru-Hull

$38.45
1-1/2" FEMALE-1" BARB

1-1/2" FEMALE-1" BARB

$32.50
1-1/2" FEMALE-1-1/2" BARB

1-1/2" FEMALE-1-1/2" BARB

$35.50
1-1/2" FEMALE-1-1/8" BARB

1-1/2" FEMALE-1-1/8" BARB

$35.50
1-1/2" FEMALE-3/4" BARB

1-1/2" FEMALE-3/4" BARB

$26.65
1-1/2" Flange Mounted Seacock

1-1/2" Flange Mounted Seacock

$237.90
1-1/2" Flush Head Full Threaded Thru-hull CF 250

1-1/2" Flush Head Full Threaded Thru-hull CF 250

From $41.45
See Buying Options
1-1/2" Hose Tailpipe Mushroom Head Thru-Hull

1-1/2" Hose Tailpipe Mushroom Head Thru-Hull

$41.45
1-1/2" Hose with 2-1/4" Thru hull seacock

1-1/2" Hose with 2-1/4" Thru hull seacock

$288.85
1-1/2" Mushroom Head Full Threaded Thru-Hull

1-1/2" Mushroom Head Full Threaded Thru-Hull

From $44.45
See Buying Options
1-1/2" PTFE Ball Balve MF 850

1-1/2" PTFE Ball Balve MF 850

From $202.40
See Buying Options
1-1/2" Screened Flush Head Full Threaded Thru-hull CF 250

1-1/2" Screened Flush Head Full Threaded Thru-hull CF 250

$50.40
1-1/2" Screened Mushroom Head Full Threaded Thru-Hull

1-1/2" Screened Mushroom Head Full Threaded Thru-Hull

$50.40
1-1/4" Ball Valve MF 850

1-1/4" Ball Valve MF 850

From $160.70
See Buying Options
1-1/4" Flush Head Drain Thru-Hull

1-1/4" Flush Head Drain Thru-Hull

$47.40
1-1/4" Flush Head Full Threaded Thru-hull CF 250

1-1/4" Flush Head Full Threaded Thru-hull CF 250

$38.45
1-1/4" Hose Tailpipe Mushroom Head Thru-Hull

1-1/4" Hose Tailpipe Mushroom Head Thru-Hull

$35.50

Related Content

Marine Boat Plumbing

What is Marelon? Plus technical information on the Forespar range of Marine Plumbing including Valve Installation, Thread Conversion, Certification and Maintenance.

Read more

How to order Forespar Marine Plumbing Valves

How do you choose between the Custom OEM Pro Series Valves, Flange Mounting Seacocks, Ball Valve and Flowtech Valve.

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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.

Read more