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Forespar
Forespar Marelon Full-Flow Seacock with Mushroom Thru-Hull
Item: #865987 | Part Number: Not Selected$92.76 - $215.96
Description
The Forespar Marelon Full-Flow Seacock with Mushroom Thru-Hull delivers reliable, corrosion-free intake control in a complete, integrated package. Made from advanced Marelon® polymer, it exceeds ABYC standards and is UL approved for above or below the waterline. Designed to eliminate thread mismatches, it includes both straight and 90° hose barbs for flexible installation.
Forespar Marelon Full-Flow Seacock with Mushroom Thru-Hull Item # 865987
Description
Features:
- Integrated 2-part system comes complete with a Marelon® valve and properly matched mushroom-head thru-hull with super-strong "buttress" type threading
- Designed to eliminate valve and thru-hull thread style mismatches
- Exceeds ABYC-H-27 Standards
- UL Approved for use above or below waterline
- Exclusive polymer formulation avoids corrosion
Specifications:
- 1/2" Hose Barb: 1 1/8" Cut Out
- 3/4" Hose Barb: 1 1/8" Cut Out
- 1" Hose Barb: 1 1/2" Cut Out
- 1 1/2" Hose Barb: 2 1/8" Cut Out
- 1 1/4" Hose Barb: 1 1/2" Cut Out
- 2" Hose Barb: 2 1/8" Cut Out
Package Includes:
- Full Flow Seacock with Integrated Hose Connector
- Hose Barb: Straight and 90 degree (Both Included)
- Mushroom Thru Hull
- Emergency Handle
- Cap / Thru-Hull Plug
Note: Forespar threaded plumbing fittings, like most true marine plumbing fittings, use NPSM threads (National Standard Free-Fitting Straight Mechanical Pipe Thread). NPT (National Pipe Threads) are tapered, NPSM Threads are parallel. The two types are not designed to work together.
Part Numbers for Forespar Marelon Full-Flow Seacock with Mushroom Thru-Hull
Reviews
Rated 5 out of
5
by
Anonymous from
Awesome kit
Absolutely the easiest way to replace a thru hull. This kit takes the guess work out of matching up the various parts. The flanged fitting is larger than most of my previous so had to redrill but thats no biggie.
Date published: 2024-11-20
Rated 4 out of
5
by
Nick from
Good through hull
Easy to fit and works well so far. The wide base helps with a through hull.
Date published: 2026-06-04
Rated 5 out of
5
by
Rick from
Bronze replacement
Well built relatively easy drop in replacement for bronze.
Date published: 2026-02-20
Rated 5 out of
5
by
Fred from
Excellent Seacock
Great product, great design. Installed easily as anticipate. Operates smoothly and keeps the water where it supposed to be. I like the emergency service plug for the through-hull stored in the handle.
Date published: 2025-06-29
Rated 5 out of
5
by
Anonymous from
Easy install but plan ahead if replacing bronze
Easy to install, be careful 2" and 1.5" have the same through hull fitting size. I had to open up 1.5" with a dremel and reduce 2" with G10 ring with Epoxy. Also used large G10 rings as backing instead of recommended wood.
Date published: 2025-06-16